ClassyFire: Listing 4825 chemical categories

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Name	ChemOnt ID	Description
m-Aminophenols	CHEMONTID:0004655	Phenols that are substituted with an amine group at the 3-position of the benzene ring.
M-benzoquinones	CHEMONTID:0002493	Benzoquinones where the two C=O groups are attached at the 1- and 3-position, respectively.
M-bromophenols	CHEMONTID:0002767	Bromophenols carrying a iodine at the C3 position of the benzene ring.
M-chlorophenols	CHEMONTID:0002770	Chlorophenols carrying a iodine at the C3 position of the benzene ring.
M-coumaroyl glycosides	CHEMONTID:0002683	Glycosides of m-coumaric acids. M-coumaric acids are aromatic compounds containing a cinnamic acid moiety hydroxylated at the C3 carbon atom of the benzene ring.
M-fluorophenols	CHEMONTID:0002773	Fluorophenols carrying a iodine at the C3 position of the benzene ring.
M-haloacetanilides	CHEMONTID:0004717	Organic compounds containing an acetamide group conjugated to a phenyl group, which is in turn meta-substituted with a halogen atom.
m-Hydroxybenzoic acid esters	CHEMONTID:0004699	Benzoic acid esters where the benzene ring is meta-substituted with a hydroxy group.
M-iminoquinones	CHEMONTID:0000152	M-quinones that carry an imine group.
M-iodophenols	CHEMONTID:0002776	Iodophenols carrying a iodine at the C3 position of the benzene ring.
M-methoxybenzoic acids and derivatives	CHEMONTID:0002347	Benzoic acids in which the hydrogen atom at position 3 of the benzene ring is replaced by a methoxy group.
M-phenylenediamines	CHEMONTID:0004745	Aromatic compound containing a benzene ring which carries 2 amino groups, at the 1- and 3-positions.
m-Phthalate esters	CHEMONTID:0004010	Ester derivatives of m-phthalic acids, which are based on a benzene 1,3-dicarboxylic acid skeleton.
M-phthalic acid and derivatives	CHEMONTID:0001106	Aromatic compounds containing a benzene ring bearing a carboxylic acid group at ring carbon atoms 1 and 2.
M-quinodimethanes	CHEMONTID:0001602	Organic compounds containing a benzene ring conjugated to two methylidene groups at carbon atoms 1 and 3, respectively.
M-quinomethanes	CHEMONTID:0002075	Organic compounds containing a benzene ring conjugated to a methylidene group and a ketone at carbon atoms 1 and 3, respectively.
M-quinones	CHEMONTID:0002386	Quinones where the two C=O groups are attached at the 1- and 3-positions, respectively.
M-quinonimines	CHEMONTID:0002893	Quinonimines in which the imine groups are in a meta-relationship.
M-sulfanylbenzoic acids	CHEMONTID:0002788	Benzoic acids which bear a sulfanyl group (R-SH) attached to the benzene ring at positions 1 and 3, respectively.
M-sulfanylbenzoic acids and derivatives	CHEMONTID:0002786	Benzoic acids (or derivatives) which bear a sulfanyl group (R-SH) attached to the benzene ring at positions 1 and 3, respectively.
M-terphenyls	CHEMONTID:0001829	Terphenyls with a structure containing the 1,3-diphenylbenzene skeleton.
m-Toluamides	CHEMONTID:0004220	Aromatic compounds containing a toluene, which carries a carboxamide group a the 3-position.
m-Xylenes	CHEMONTID:0004209	Aromatic compounds that contain a m-xylene moiety, which is a monocyclic benzene carrying exactly two methyl groups at the 1- and 3-positions.
m-Xylenols	CHEMONTID:0004213	Aromatic compounds that contain a m-xylenol moiety, which is a monocyclic benzene carrying exactly two methyl groups at the 1- and 3-positions, and at least one hydroxyl group.
Maaliane sesquiterpenoids	CHEMONTID:0003564	Cycloeudesmane sesquiterpenoids that arise from the C7-C11 cyclization of the eudesmane skeleton.
Macrolactams	CHEMONTID:0000064	Cyclic amides of amino carboxylic acids, having a 1-azacycloalkan-2-one structure, or analogues having unsaturation or heteroatoms replacing one or more carbon atoms of the ring. They are nitrogen analogues (the a nitrogen atom replacing the o atom of the cyclic carboxylic acid group ) of the naturally occurring macrolides.
Macrolide lactams	CHEMONTID:0001900	Cyclic polyketides containing both a cyclic amide and a cyclic ester group.
Macrolides and analogues	CHEMONTID:0000147	Organic compounds containing a lactone ring of at least twelve members.
Macroline alkaloids	CHEMONTID:0003759	Alkaloids with a structure that is based on the tetracyclic macroline skeleton. The macroline skeleton arises by scission of the C-21 to N-4 bond of the akuammilan skeleton, and mostly occurs in bisindole alkaloids.
Maleimides	CHEMONTID:0003203	Compounds containing a 2,5-pyrroledione moiety.
Mannosylerythritol lipids	CHEMONTID:0001462	Lipids containing a mannosylerylthritol skeleton, which is 1-O-b-mannopyranosyl-meso-erythritol.
Matrine alkaloids	CHEMONTID:0002720	Lupin alkaloids with a structure based on the matrine skeleton, a four-ring skeleton that based on a saturated dipyrido[2,1-f:3',2',1'-ij][1,6]naphthyridin-10-one skeleton.
Medium-chain 2-enoyl CoAs	CHEMONTID:0003207	Organic compounds containing a coenzyme A substructure linked to a medium-chain 2-enoyl chain of 5 to 12 carbon atoms.
Medium-chain aldehydes	CHEMONTID:0002229	An aldehyde with a chain length containing between 6 and 12 carbon atoms.
Medium-chain fatty acids	CHEMONTID:0003086	Fatty acids with an aliphatic tail that contains between 4 and 12 carbon atoms.
Medium-chain fatty acyl CoAs	CHEMONTID:0003206	Acyl CoAs where the group acylated to the coenzyme A moiety is a medium aliphatic chain of 6 to 12 carbon atoms.
Medium-chain hydroxy acids and derivatives	CHEMONTID:0000299	Hydroxy acids with a 6 to 12 carbon atoms long side chain.
Medium-chain keto acids and derivatives	CHEMONTID:0001415	Keto acids with a 6 to 12 carbon atoms long side chain.
Melleolides and analogues	CHEMONTID:0001776	Compounds with a structure characterized by the presence of a 2-hydroxy-4-methoxy-6-methylbenzoic acid derivative linked to a 3,6,6,7b-tetramethyl-cyclobuta[e]indene moiety.
Melodinus alkaloids	CHEMONTID:0003761	Alkaloids with a structure that is based on the melodinus skeleton. This backbone is a pentacyclic structure that contains a tetrahydroquinoline and an indolizine joined to each other through a cyclopentane.
Menaquinones	CHEMONTID:0004109	Vitamin K2 compounds consisting of a naphtho-1,4-quinone ring system, which is substituted at the 2-position by an isoprenyl side-chain, and usually, at the 3-position by a methyl group.
Menthane monoterpenoids	CHEMONTID:0001401	Monoterpenoids with a structure based on the o-, m-, or p-menthane backbone. P-menthane consists of the cyclohexane ring with a methyl group and a (2-methyl)-propyl group at the 1 and 4 ring position, respectively. The o- and m- menthanes are much rarer, and presumably arise by alkyl migration of p-menthanes.
Mercuribenzoic acids	CHEMONTID:0004029	Benzoic acids containing a mercury atom attached to the benzene moiety.
Meta cresols	CHEMONTID:0001273	Aromatic compounds containing a meta-cresol moiety, which consists of a benzene ring bearing a methyl group and a hydroxyl group at ring positions 1 and 3, respectively.
Meta thiazepines	CHEMONTID:0001352	Aromatic compounds containing meta thiazepine moiety, which is an unsaturated seven-member heterocyclic compound, with five carbon atoms, and two sulfur atoms at position 1 and 3.
Meta,meta-bridged biphenyls	CHEMONTID:0003524	Cyclic diarylheptanoids where the two aryl groups are linked to each other by an ether group conjugated to their 3-position.
Meta,para-diphenylether diarylheptanoids	CHEMONTID:0003523	Cyclic diarylheptanoids where the two benzene rings are linked to each other by an ether group conjugated to the 3-position of one benzene ring and the 4-position of the other ring.
Metal acetylides	CHEMONTID:0004566	Organic compounds containing an acetylide group substituted with a metal atom.
Metal alkyl halides	CHEMONTID:0004442	Organometallic compounds with the generic formula R-M-X, where R is an alkyl group, and X is a metal atom.
Metal alkyls	CHEMONTID:0004436	Organometallic compounds hat containing a metal atom substituted by on or more alkyl groups.
Metal allyls	CHEMONTID:0004441	Organometallic compounds containing an allylic group attached to the metal atom.
Metal aryls	CHEMONTID:0004440	Organometallic compounds hat containing a metal atom substituted by on or more aryl groups.
Metal carbonate salts	CHEMONTID:0004449	Organic salts that results from the interaction of a metal ion with a negatively charged oxygen atom of the carbonate ion.
Metal cyanates	CHEMONTID:0004562	Compounds containing a metal atom and a cyanate. The metal cyanate group can be in neutral or ionic form (involving a cationic metal and the anionic cyanate).
Metal p-nitrophenoxides	CHEMONTID:0004610	Para-nitrophenoxide derivatives that are linked to a metal atom.
Metal thiocyanates	CHEMONTID:0004611	Metal salts of thiocyanic acid.
Metallobisdithiocarbamates	CHEMONTID:0004306	Organosulfur compounds containing a metal atom (usually in ionic form), which is linked to two dithiocarbamate.
Metalloheterocyclic compounds	CHEMONTID:0002052	Heterocyclic compounds contain one metal ring atom.
Metalloid aluminates	CHEMONTID:0000969	Inorganic compounds in which the largest oxoanion is aluminate, and in which the heaviest atom not in an oxoanion is a metalloid metal.
Metalloid antimonates	CHEMONTID:0000970	Inorganic compounds in which the largest oxoanion is antimonate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid antimonites	CHEMONTID:0000971	Inorganic compounds in which the largest oxoanion is antimonite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid arsenates	CHEMONTID:0000972	Inorganic compounds in which the largest oxoanion is arsenate, and in which the heaviest atom not in an oxoanion is a post-transition metal.
Metalloid arsenites	CHEMONTID:0000973	Inorganic compounds in which the largest oxoanion is arsenite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid astatides	CHEMONTID:0000581	Inorganic compounds in which the largest halogen atom is Astatine, and the heaviest metal atom is a metalloid.
Metalloid bisulfites	CHEMONTID:0000974	Inorganic compounds in which the largest oxoanion is bisulfite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid borates	CHEMONTID:0000975	Inorganic compounds in which the largest oxoanion is borate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid bromates	CHEMONTID:0000790	Inorganic compounds in which the largest oxoanion is bromate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid bromides	CHEMONTID:0000582	Inorganic compounds in which the largest halogen atom is Bromine, and the heaviest metal atom a metalloid.
Metalloid chlorates	CHEMONTID:0000791	Inorganic compounds in which the largest oxoanion is chlorate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid chlorides	CHEMONTID:0000583	Inorganic compounds in which the largest halogen atom is Chlorine, and the heaviest metal atom is a metalloid.
Metalloid chlorites	CHEMONTID:0000792	Inorganic compounds in which the largest oxoanion is chlorite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid chromates	CHEMONTID:0000793	Inorganic compounds in which the largest oxoanion is chromate, and in which the heaviest atom is a metalloid.
Metalloid chromites	CHEMONTID:0000794	Inorganic compounds in which the largest oxoanion is chromite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid cyanates	CHEMONTID:0000795	Inorganic compounds in which the largest oxoanion is cyanate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid dithionites	CHEMONTID:0000828	Inorganic compounds in which the largest oxoanion is dithionite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid dithiophosphates	CHEMONTID:0002301	Inorganic compounds in which the largest oxoanion is dithiophosphate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid ferrates	CHEMONTID:0000976	Inorganic compounds in which the largest oxoanion is ferrate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid fluorides	CHEMONTID:0000584	Inorganic compounds in which the largest halogen atom is fluorine, and the heaviest metal atom is a metalloid.
Metalloid hydrides	CHEMONTID:0000532	Inorganic hydride compounds in which the heaviest metal atom is a metalloid.
Metalloid hydroxides	CHEMONTID:0000797	Inorganic compounds in which the largest oxoanion is hydroxide, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid hypobromites	CHEMONTID:0000798	Inorganic compounds in which the largest oxoanion is hypobromite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid hypochlorites	CHEMONTID:0000799	Inorganic compounds in which the largest oxoanion is hypochlorite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid hyponitrites	CHEMONTID:0000800	Inorganic compounds in which the largest oxoanion is hyponitrite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid hypophosphites	CHEMONTID:0000801	Inorganic compounds in which the largest oxoanion is hypophosphite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid hyposulfites	CHEMONTID:0000829	Inorganic compounds in which the largest oxoanion is hyposulfite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid iodates	CHEMONTID:0000802	Inorganic compounds in which the largest oxoanion is iodate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid iodides	CHEMONTID:0000585	Inorganic compounds in which the largest halogen atom is Iodine, and the heaviest metal atom is a metalloid.
Metalloid manganates	CHEMONTID:0000977	Inorganic compounds in which the largest oxoanion is manganate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid molybdates	CHEMONTID:0000978	Inorganic compounds in which the largest oxoanion is molybdate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid nitrates	CHEMONTID:0000804	Inorganic compounds in which the largest oxoanion is nitrate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid nitrides	CHEMONTID:0000533	Inorganic compounds of nitrogen where nitrogen has a formal oxidation state of -3, and the heaviest metal atom is a metalloid.
Metalloid nitrites	CHEMONTID:0000803	Inorganic compounds in which the largest oxoanion is nitrite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid organides	CHEMONTID:0000460	Inorganic compounds belonging to either of the metalloid hydrides, metalloid nitrides, metalloid oxides, metalloid sulfides.
Metalloid orthonitrates	CHEMONTID:0000805	Inorganic compounds in which the largest oxoanion is orthonitrate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid orthovanadates	CHEMONTID:0000987	Inorganic compounds in which the largest oxoanion is orthovanadate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid oxides	CHEMONTID:0000534	Inorganic compounds containing an oxygen atom of an oxidation state of -2, in which the heaviest atom bonded to the oxygen is a metalloid.
Metalloid oxoanionic compounds	CHEMONTID:0000449	Inorganic oxoanionic compounds in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid perbromates	CHEMONTID:0000806	Inorganic compounds in which the largest oxoanion is perbromate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid perchlorates	CHEMONTID:0000807	Inorganic compounds in which the largest oxoanion is perchlorate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid periodates	CHEMONTID:0000808	Inorganic compounds in which the largest oxoanion is periodate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid permanganates	CHEMONTID:0000809	Inorganic compounds in which the largest oxoanion is permanganate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid peroxodisulfates	CHEMONTID:0000824	Inorganic compounds in which the largest oxoanion is peroxodisulfate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid peroxomonosulfates	CHEMONTID:0000823	Inorganic compounds in which the largest oxoanion is peroxomonosulfate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid peroxynitrates	CHEMONTID:0000810	Inorganic compounds in which the largest oxoanion is peroxynitrate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid peroxynitrites	CHEMONTID:0000811	Inorganic compounds in which the largest oxoanion is peroxynitrate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid perrhenates	CHEMONTID:0000812	Inorganic compounds in which the largest oxoanion is perhenate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid pertechnetates	CHEMONTID:0000813	Inorganic compounds in which the largest oxoanion is pertechnetate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid phosphates	CHEMONTID:0000815	Inorganic compounds in which the largest oxoanion is phosphate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid phosphites	CHEMONTID:0000814	Inorganic compounds in which the largest oxoanion is phosphite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid phosphonates	CHEMONTID:0002371	Inorganic compounds in which the largest oxoanion is phosphonate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid plumbates	CHEMONTID:0000979	Inorganic compounds in which the largest oxoanion is plumbate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid plumbites	CHEMONTID:0001246	Inorganic compounds in which the largest oxoanion is plumbite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid pyrophosphates	CHEMONTID:0000816	Inorganic compounds in which the largest oxoanion is pyrophosphate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid pyrosulfates	CHEMONTID:0000825	Inorganic compounds in which the largest oxoanion is pyrosulfate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid salts	CHEMONTID:0000442	Inorganic halogenic compounds in which the heaviest metal atom is a metalloid.
Metalloid selenates	CHEMONTID:0000817	Inorganic compounds in which the largest oxoanion is selenate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid selenites	CHEMONTID:0000818	Inorganic compounds in which the largest oxoanion is selenite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid selenophosphates	CHEMONTID:0002269	Inorganic compounds in which the largest oxoanion is selenophosphate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid silicates	CHEMONTID:0000980	Inorganic compounds in which the largest oxoanion is silicate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid stannates	CHEMONTID:0000981	Inorganic compounds in which the largest oxoanion is stannate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid stannites	CHEMONTID:0000982	Inorganic compounds in which the largest oxoanion is stannite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid sulfates	CHEMONTID:0000819	Inorganic compounds in which the largest oxoanion is sulfate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid sulfides	CHEMONTID:0000535	Inorganic compounds containing a sulfur atom of an oxidation state of -2, in which the heaviest atom bonded to the oxygen is a metalloid.
Metalloid sulfites	CHEMONTID:0000820	Inorganic compounds in which the largest oxoanion is sulfite, and in which the heaviest atom not in an oxoanion is a post-transition metal.
Metalloid superoxides	CHEMONTID:0000821	Inorganic compounds in which the largest oxoanion is superoxide, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid tellurates	CHEMONTID:0000983	Inorganic compounds in which the largest oxoanion is tellurate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid tellurites	CHEMONTID:0000984	Inorganic compounds in which the largest oxoanion is tellurite, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid tetrahydroxyborates	CHEMONTID:0000985	Inorganic compounds in which the largest oxoanion is tetrahydroxyborate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid tetrathionates	CHEMONTID:0000826	Inorganic compounds in which the largest oxoanion is tetrathionate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid thiophosphates	CHEMONTID:0002300	Inorganic compounds in which the largest oxoanion is thiophosphate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid thiosulfates	CHEMONTID:0000827	Inorganic compounds in which the largest oxoanion is thiosulfate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloid tungstates	CHEMONTID:0000986	Inorganic compounds in which the largest oxoanion is tungstate, and in which the heaviest atom not in an oxoanion is a metalloid.
Metalloporphyrins	CHEMONTID:0000452	Polycyclic compounds containing a porphyrin moiety and a metal atom.
Metallotetrapyrroles	CHEMONTID:0001926	Polycyclic compounds containing a tetrapyrrole skeleton combined with a metal atom.
Methanesulfonates	CHEMONTID:0002095	Compounds containing a methanesulfonate moiety, which consists of a methane linked to the sulfur atom of a sulfonate group.
Methionine and derivatives	CHEMONTID:0004143	Compounds containing methionine or a derivative thereof resulting from reaction of methionine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom.
Methoxides	CHEMONTID:0004807	Compounds containing a methoxide group with the formula H3CO-.
Methoxy fatty acids	CHEMONTID:0000421	Lipids containing a methoxy group linked to a fatty acid chain.
Methoxyanilines	CHEMONTID:0003999	Organic compound containing an aniline group substituted at one or more positions by a methoxy group.
Methoxybenzenes	CHEMONTID:0004113	Organic aromatic compounds containing a monocyclic benzene moiety carrying exactly or one more methoxy groups.
Methoxybenzoic acids and derivatives	CHEMONTID:0002344	Benzoic acids in which a hydrogen atom of the benzene ring is replaced by a methoxy group.
Methoxylated amphetamines	CHEMONTID:0004784	Compounds containing an amphetamine moiety, where the benzene ring is O-methylated.
Methoxyphenols	CHEMONTID:0000190	Compounds containing a methoxy group attached to the benzene ring of a phenol moiety.
Methoxyphenylisopropylamines	CHEMONTID:0004797	Organic aromatic compounds containing a 1-phenylpropan-2-amine substituted at one or more ring position with a methoxy group.
Methoxypyrazines	CHEMONTID:0002563	Pyrazines containing a methoxyl group attached to the pyrazine ring.
Methyl esters	CHEMONTID:0003416	Organic compounds containing a carboxyl group that is esterified with a methyl group. They have the general structure RC(=O)OR', where R=H or organyl group and R'=methyl group.
Methyl-7-aporphines	CHEMONTID:0003022	Aporphines containing a methyl group at the 7-position.
Methyl-branched fatty acids	CHEMONTID:0003544	Fatty acids with an acyl chain that has a methyl branch. Usually, they are saturated and contain only one or more methyl group. However, branches other than methyl may be present.
Methylated trivalent arsenic compounds	CHEMONTID:0004058	Organoarsenic compounds containing a trivalent arsenic atom linked to one or more methyl group.
Methylcarbamates	CHEMONTID:0004787	Methyl esters of carbamic acid.
Methylpyridines	CHEMONTID:0004152	Organic compounds containing a pyridine ring substituted at one or more positions by a methyl group.
Methylthio-s-triazines	CHEMONTID:0004735	Aromatic compounds containing a 1,3,5-triazine ring that is substituted at the 2-position with a methylthio group.
Milbemycins	CHEMONTID:0002902	A group of macrolides with a structure containing a 16-membered lactone ring fused to a 1,7-dioxaspiroundecane ring system and to either a benzofuran (or hydrogenated derivative thereof). In some cases (e.g. Milbemycin E), the tetrahydrofuranyl ring is missing. Milbemycins can be o-glycosylated at C13 to form Avermectins. Milbemycins are produced by Streptomyces species.
Miscellaneous aluminates	CHEMONTID:0001471	Inorganic compounds in which the largest metallic oxoanion is aluminate, to which either no atom or a non metal atom is bonded.
Miscellaneous antimonates	CHEMONTID:0001472	Inorganic compounds in which the largest metallic oxoanion is antimonate, to which either no atom or a non metal atom is bonded.
Miscellaneous antimonites	CHEMONTID:0001473	Inorganic compounds in which the largest metallic oxoanion is antimonite, to which either no atom or a non metal atom is bonded.
Miscellaneous arsenates	CHEMONTID:0001474	Inorganic compounds in which the largest metallic oxoanion is arsenate, to which either no atom or a non metal atom is bonded.
Miscellaneous arsenites	CHEMONTID:0001475	Inorganic compounds in which the largest metallic oxoanion is arsenite, to which either no atom or a non metal atom is bonded.
Miscellaneous borates	CHEMONTID:0001476	Inorganic compounds in which the largest metallic oxoanion is borate, to which either no atom or a non metal atom is bonded.
Miscellaneous chromates	CHEMONTID:0000273	Inorganic compounds in which the largest metallic oxoanion is chromate, to which either no atom or a non metal atom is bonded.
Miscellaneous chromites	CHEMONTID:0000404	Inorganic compounds in which the largest metallic oxoanion is chromite, to which either no atom or a non metal atom is bonded.
Miscellaneous ferrates	CHEMONTID:0001477	Inorganic compounds in which the largest metallic oxoanion is ferrate, to which either no atom or a non metal atom is bonded.
Miscellaneous inorganic compounds	CHEMONTID:0001568	Inorganic compounds of miscellaneous structure, which can be a mixture of chemical elements of different types.
Miscellaneous manganates	CHEMONTID:0001478	Inorganic compounds in which the largest metallic oxoanion is manganate, to which either no atom or a non metal atom is bonded.
Miscellaneous metallic oxoanionic compounds	CHEMONTID:0001470	Inorganic compounds containing a metallic oxoanion to which either no atom or a non metal atom is bonded.
Miscellaneous metavanadates	CHEMONTID:0003289	Inorganic compounds in which the largest metallic oxoanion is metavanadate, to which either no atom or a non metal atom is bonded.
Miscellaneous mixed metal/non-metals	CHEMONTID:0001270	Inorganic compounds containing non-metal as well as metal atoms but not belonging to afore mentioned classes.
Miscellaneous molybdates	CHEMONTID:0001479	Inorganic compounds in which the largest metallic oxoanion is molybdate, to which either no atom or a non metal atom is bonded.
Miscellaneous orthovanadates	CHEMONTID:0001489	Inorganic compounds in which the largest metallic oxoanion is orthovanadate, to which either no atom or a non metal atom is bonded.
Miscellaneous plumbates	CHEMONTID:0001480	Inorganic compounds in which the largest metallic oxoanion is plumbate, to which either no atom or a non metal atom is bonded.
Miscellaneous plumbites	CHEMONTID:0001481	Inorganic compounds in which the largest metallic oxoanion is plumbite, to which either no atom or a non metal atom is bonded.
Miscellaneous silicates	CHEMONTID:0001482	Inorganic compounds in which the largest metallic oxoanion is silicate, to which either no atom or a non metal atom is bonded.
Miscellaneous stannates	CHEMONTID:0001483	Inorganic compounds in which the largest metallic oxoanion is stannate, to which either no atom or a non metal atom is bonded.
Miscellaneous stannites	CHEMONTID:0001484	Inorganic compounds in which the largest metallic oxoanion is stannite, to which either no atom or a non metal atom is bonded.
Miscellaneous tellurates	CHEMONTID:0001485	Inorganic compounds in which the largest metallic oxoanion is tellurate, to which either no atom or a non metal atom is bonded.
Miscellaneous tellurites	CHEMONTID:0001486	Inorganic compounds in which the largest metallic oxoanion is tellurite, to which either no atom or a non metal atom is bonded.
Miscellaneous tetrahydroxyborates	CHEMONTID:0001487	Inorganic compounds in which the largest metallic oxoanion istetrahydroxyborate, to which either no atom or a non metal atom is bonded.
Miscellaneous tungstates	CHEMONTID:0001488	Inorganic compounds in which the largest metallic oxoanion is tungstate, to which either no atom or a non metal atom is bonded.
Mitomycins	CHEMONTID:0000391	Polycyclic compounds with a structure based on an aziridine ring linked to a 7-amino-6-methyl-cyclohexa[b]pyrrolizine-5,8-dione.
Mitomycins, mitosane and mitosene derivatives	CHEMONTID:0004096	A group of pyrroloindolediones, which carry a methyl group at the 6-position of their quinone moiety. The mitosane (containing an aziridine) and mitosene server as backbone for mitomycins and their derivatives.
Mixed metal/non-metal compounds	CHEMONTID:0000424	Compounds that contains both metal and non metal atoms.
Molybdopterin dinucleotides	CHEMONTID:0003654	A dinucleotide that is made up of a molybdopterin and a purine or pyrimidine base linked to each other through a phosphate chain.
Molybdopterins	CHEMONTID:0002694	Cofactors or analogs thereof, with a structure based on a furan ring fused to a pterin. In addition, the pyran ring features two thiolates, which serve as ligands in molybdo- and tungstoenzymes. In some cases, the alkyl phosphate group is replaced by an alkyl diphosphate nucleotide.
Mono-(1Z-alkenyl)-glycerols	CHEMONTID:0003806	Monoradylglycerolipids that carry exactly one 1Z-alkyenyl chain attached to the glycerol moiety.
Mono-rhamnolipids	CHEMONTID:0003365	Rhamnolipids containing exactly one rhamnose sugar ring.
Monoacylglycerols	CHEMONTID:0001133	Glycerides consisting of one fatty acid chain covalently bonded to a glycerol molecule through an ester linkage.
Monoacylglycerophosphates	CHEMONTID:0001683	Monacylglyerophosphates in which the glycerol moiety is esterified at only position, and is attached to a phosphate group.
Monoacylglycerophosphomonoradylglycerols	CHEMONTID:0003844	Glycerophosphomonoradylglycerols that carry exactly one acyl chain attached to the glycerol moiety through an ester linkage.
Monoalkyl phosphates	CHEMONTID:0003458	Organic compounds containing a phosphate group that is linked to exactly one alkyl chain.
Monoalkylamines	CHEMONTID:0000469	Organic compounds containing an primary aliphatic amine group.
Monoalkylboranes	CHEMONTID:0004573	Organoboron compounds where the boron atom is substituted by only one alkyl group.
Monoalkylglycerol-3-phosphoserines	CHEMONTID:0003837	Lipids containing a glycerol moiety carrying a phosphoserine at the 3-position, as well as an alkyl chain attached to the glycerol moiety through an ether linkage.
Monoalkylglycerols	CHEMONTID:0003263	Glycerolipids containing exactly one aliphatic chain linked to the glycerol moiety. This chain is the only one linked to the glycerol.
Monoalkylglycerophosphates	CHEMONTID:0001406	Compounds containing glycerophosphate moiety attached to an fatty acyl chain through an ether bond.
Monoalkylglycerophosphocholines	CHEMONTID:0001414	Compounds containing glycerophosphocholine moiety attached to an fatty acyl chain through an ether bond.
Monoalkylglycerophosphoethanolamines	CHEMONTID:0003833	Glycerophosphoethanolamines that carry exactly one alkyl chain attached to the glycerol moiety through a ether linkage.
Monoalkylglycerophosphoglycerols	CHEMONTID:0003842	Glycerophosphoglycerols that carry exactly one alkyl chain attached to the glycerol moiety through an ether linkage.
Monoalkylglycerophosphoinositols	CHEMONTID:0003851	Glycerophosphoinositols that contain exactly on fatty acyl chain attached to the glycerol moiety through an ether linkage.
Monoalkylsilanediols	CHEMONTID:0003269	Organosilicon compounds with the general formula HO[Si](R)(H)OH where R is an alkyl groups.
Monoalkylsilanetriols	CHEMONTID:0003270	Organosilicon compounds with the general formula HO[Si](R)(OH)OH where R is an alkyl groups.
Monoalkylsilanols	CHEMONTID:0003266	Organosilicon compounds containing exactly one alkyl group attached to the silicon atom of a silanol group. They have the general formula R[Si](H)(H)OH.
Monoalkyltins	CHEMONTID:0004070	Triorganotin compounds where the tin atom is linked to exactly one alkyl groups.
Monobactams	CHEMONTID:0000170	Compounds comprising beta-lactam ring is alone and not fused to another ring.
Monocarboxylic acids and derivatives	CHEMONTID:0001137	Carboxylic acids containing exactly one carboxyl groups.
Monocyclic acetylenes	CHEMONTID:0002848	Monocyclic hydrocarbons containing one or more acetylene groups.
Monocyclic monoterpenoids	CHEMONTID:0001563	Monoterpenoids containing 1 ring in the isoprene chain.
Monohaloarsines	CHEMONTID:0004281	Organoarsenic compounds with the general formula R[As](R')X, where R = Organyl group, R'=H atom or Organyl group, and X = halogen atom.
Monohydroxy bile acids, alcohols and derivatives	CHEMONTID:0000260	Bile acids, alcohols or any of their derivatives bearing a hydroxyl group.
Monohydroxyflavonoids	CHEMONTID:0003006	Flavonoids that bear one hydroxyl group on the flavonoid skeleton.
Monomethylphosphatidylethanolamines	CHEMONTID:0003402	Lipids with a structure containing a glycerol moiety linked at its terminal C3 atom to a N-methylphosphoethanolamine group, and at its C1 and C2 terminal atoms by an acyl group.
Monoradylglycerols	CHEMONTID:0003808	Glycerolipids that carry exactly one acyl chain attached to the glycerol moiety.
Monosaccharide phosphates	CHEMONTID:0001541	Monosaccharides comprising a phosphated group linked to the carbohydrate unit.
Monosaccharide sulfates	CHEMONTID:0003306	Monosaccharides that contain a sulfate group linked to the sugar moiety.
Monosaccharides	CHEMONTID:0001540	Compounds containing one carbohydrate unit not glycosidically linked to another such unit, and no set of two or more glycosidically linked carbohydrate units. Monosaccharides have the general formula CnH2nOn.
Monosubstituted amine oxides and derivatives	CHEMONTID:0003068	Amine oxides where the N atom is monosubstituted with one organic group.
Monoterpenoids	CHEMONTID:0001549	Compounds containing a chain of two isoprene units.
Monothioacetals	CHEMONTID:0002131	Compounds containing a monothioacetal functional group with the general structure R2C(OR')(SR').
Monothioketals	CHEMONTID:0002130	Compounds containing a monothioketal functional group with the general structure R2C(OR')(SR') with (R = any atom but H).
Montanine-type amaryllidaceae alkaloids	CHEMONTID:0004125	Amaryllidaceae alkaloids based on the montanine skeleton, which is made up of a characteristic 5,11-methanomorphanthridine framework.
Morphinans	CHEMONTID:0000058	Polycyclic compounds with a four-ring skeleton with three condensed six-member rings forming a partially hydrogenated phenanthrene moiety, one of which is aromatic while the two others are alicyclic.
Morpholine carboxylic acids	CHEMONTID:0002407	Heterocyclic compounds containing a morpholine ring substituted by one or more carboxylic acid groups.
Morpholine carboxylic acids and derivatives	CHEMONTID:0002307	Heterocyclic compounds containing a morpholine ring substituted by one or more carboxylic acid groups (or derivative thereof).
Morpholines	CHEMONTID:0000392	Organic compounds containing a morpholine moiety, which consists of a six-member aliphatic saturated ring with the formula C4H9NO, where the oxygen and nitrogen atoms lie at positions 1 and 4, respectively.
Mutilane diterpenoids	CHEMONTID:0002930	Diterpenoids with a structure based on the mutilane skeleton.
Mutilin derivatives	CHEMONTID:0002002	Tricyclic diterpenoids structurally characterized by the presence of a 1-oxo-decahydro-3a,9-propanocyclopenta[8]annulene skeleton.