ClassyFire: Listing 4825 chemical categories

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Name	ChemOnt ID	Description
S-(2-hydroxyacyl)glutathiones	CHEMONTID:0004546	Any glutathione derivative with a S-2-hydroxyacyl substituent.
S-acylglutathiones	CHEMONTID:0003052	Any glutathione derivative with a S-acyl substituent.
S-alkyl thiosulfates	CHEMONTID:0003443	Organosulfur compounds that contain a alkyl chain that is attached to the sulfur atom of thiosulfuric acid (or its conjugated base).
S-alkyl-CoAs	CHEMONTID:0003440	Alkyl sulfides consisting of coenzyme A that carries an S-alkyl substituent.
S-alkyl-L-cysteine S-oxides	CHEMONTID:0003442	Cysteine derivatives that carry an alkyl chain attached to a sulfinyl group that arose from oxygenation of the sulfanyl group.
S-alkyl-L-cysteines	CHEMONTID:0003441	Cysteine derivatives that carry an alkyl chain attached to the sulfanyl group.
S-Alkyl-thiocarbamates	CHEMONTID:0004427	S-ester derivatives of thiocarbamic acid, with the general formula RSC(=O)NR2, where R is an alkyl group.
S-alkyl-thiohydroximates	CHEMONTID:0004138	Organosulfur compounds with the general structure RC(S)=NOH, where R =alkyl group.
S-alkylisothiosemicarbazones	CHEMONTID:0004694	S-alkylated derivatives of isothiosemicarbazones.
S-alkylsulfenates	CHEMONTID:0004175	Organosulfur compounds containing a sulfenic acid, where the sulfur atom is linked to an alkyl group. They have the general formula RSOH, where R is an alkyl group.
S-aminosulfonimidothioyl compounds	CHEMONTID:0003142	Organosulfur compounds with the general formula N=S(R)(=S)N(R')R\" (R=organyl; R',R\" = any atom but N).
S-glucuronides	CHEMONTID:0002816	Carbohydrate derivatives containing glucuronic acid linked to another substance through a S-glycosidic bond.
S-hydrazinosulfonimidoyl compounds	CHEMONTID:0003141	Organosulfur compounds with the general formula N=S(R)(=O)N(N)R' (R=organyl, R' = any atom but N).
S-prenyl-L-cysteines	CHEMONTID:0004260	Cysteine derivatives that carry a prenyl chain attached to the sulfanyl group.
S-sulfo-L-cysteines	CHEMONTID:0004556	S-conjugated L-cysteine where the S-substituent is specified as a sulfo group.
S-thiocarbamates	CHEMONTID:0004426	S-ester derivatives of thiocarbamic acid, with the general formula RSC(=O)NR2.
S-triazinyl-2-sulfonylureas	CHEMONTID:0004706	Aromatic heterocyclic compounds containing a s-triazine ring which is substituted with a urea at the ring 2-position.
Saccharolipids	CHEMONTID:0003918	Compounds in which fatty acids are linked directly to a sugar backbone, forming structures that are compatible with membrane bilayers. In the saccharolipids, a sugar substitutes for the glycerol backbone that is present in glycerolipids and glycerophospholipids. The most familiar saccharolipids contain an acylated glucosamine. In contrast to others glycolipids, the fatty acid is not glycosidically linked to the sugar moiety.
Salicylamides	CHEMONTID:0002515	Carboxamide derivatives of salicylic acid. Salicylic acid is the ortho-hydroxylated derivative of benzoic acid.
Salicylic acid and derivatives	CHEMONTID:0000487	Compounds containing a 2-hydroxybenzoic acid moiety or a derivative thereof.
Salicylic acids	CHEMONTID:0002514	Ortho-hydroxylated benzoic acids.
Salt-like carbides	CHEMONTID:0004468	Inorganic salts containing a carbon atom combined with one or more elements of similar or lower electronegativity.
Samamine-type alkaloids	CHEMONTID:0002727	Alkaloids with a structure that is based on the samamine skeleton, a tetracyclic compound consisting of and azepane ring fuse a saturated cyclopenta[a]naphthalene derivative.
Samandarines	CHEMONTID:0002734	Samamime-type alkaloids in which the A-ring of the steroidal backbone is an oxazolidine.
Saturated hydrocarbons	CHEMONTID:0004474	Hydrocarbons that contains only saturated carbon atoms, which are linked to one another through single bonds. These includes alkanes and cycloalkanes.
Saxitoxins, gonyautoxins, and derivatives	CHEMONTID:0001800	Compounds with a structure based on a 2,6-diamino-4-methyl-pyrrolo[1,2-c]purin-10-ol skeleton.
Scalarane sesterterpenoids	CHEMONTID:0002883	Sesterterpenoids with a structure based on the scalarane backbone. Scalarane is a tetracyclic compound, which is similar the homoandrostane with five methyl groups at the 4-, 4-, 8-, 17-, 17a-positions.
Schizozygine alkaloids	CHEMONTID:0003763	Alkaloids with a structure based o the hexacyclic schizozygine skeleton, consisting of quinolizidine, indole, and piperidine.
Secobenzophenanthridine alkaloids	CHEMONTID:0002670	Alkaloids containing a secobenzophenanthridine skeleton.
Secondary alcohols	CHEMONTID:0001661	Compounds containing a secondary alcohol functional group, with the general structure HOC(R)(R') (R,R'=alkyl, aryl).
Secondary alkylarylamines	CHEMONTID:0002458	Secondary alkylarylamines with the general formula HN(R)R' (R = alkyl, R' = aryl).
Secondary amines	CHEMONTID:0002451	Amines having the nitrogen atom linked to exactly two hydrocarbyl groups.
Secondary carboxylic acid amides	CHEMONTID:0001663	Compounds containing a secondary carboxylic acid amide functional group, with the general structure RC(=O)N(R')H (R,R'=alkyl, aryl).
Secondary ketimines	CHEMONTID:0002375	Ketimines where the nitrogen of the ketimine group is linked to an alkyl or aryl group.
Secondary stibines	CHEMONTID:0004291	Organoantimony hydrides in which the antimony tom is bond to two carbon atoms and an hydrogen atom. They have the generic structure R2AsH.
Selenanthrenes	CHEMONTID:0003696	Organic compounds containing a selenanthrene moiety. Selenanthrene is a tricyclic ring system that consists of two benzene rings fused to each other through a 1,4-selenine ring.
Selenazoles	CHEMONTID:0002428	Compounds containing a five-membered aromatic ring with a the carbon atom replaced by a selenium atom (at position 1) and a nitrogen atom (at position 2 or 3).
Selenenic acids	CHEMONTID:0004826	Aromatic compounds containing a moiety of the generic structure RSeOH, where R is an organic group.
Selenenyl halides	CHEMONTID:0002471	Organoselenium compounds with the general formula RSeX (R = organyl, X = halogen atom).
Selenimidic acids	CHEMONTID:0003117	Organic acids with the general formula R[Se](OH)NR' (R = any atom but N).
Seleninic acids and derivatives	CHEMONTID:0002027	Compounds containing a seleninic acid moiety, with the general structure RSe(=O)OH.
Seleninohydrazides	CHEMONTID:0003162	Organoselenium compounds with the general formula RSeO2NHNH2.
Seleninyl compounds	CHEMONTID:0003119	Organic compounds with the general formula RSe(=O)R' (R = organyl).
Seleniranes	CHEMONTID:0002476	Organoselenium compounds containing a three-member ring consisting of two carbon atoms and one selenium atom.
Selenocarbonyl compounds	CHEMONTID:0003123	Organoselenium compounds with the general formula RC(=Se)R' (R= organyl, R' = H, organyl).
Selenocyanates	CHEMONTID:0002470	Organic compounds with the general formula RSeC#N.
Selenodiimidic acids	CHEMONTID:0003116	Organic acids with the general formula R[Se](OH)(=N)=NR' (R = any atom but N).
Selenoesters	CHEMONTID:0002430	Analogues of esters where an oxygen atom is replaced by a selenium atom. They generally have the formula RC(=O)SeR' or RC(=Se)OR'.
Selenoethers	CHEMONTID:0002429	Organic compounds containing a selenoether group, with the general formula RseR' ( where R, R' are not H atoms).
Selenoglycosides	CHEMONTID:0002206	Glycoside in which a sugar group is bonded through one carbon to another group via a Se-glycosidic bond.
Selenols	CHEMONTID:0002040	Organic compounds that contains the functional group with the connectivity R-Se-H.
Selenonohydrazides	CHEMONTID:0003163	Organoselenium compounds with the general formula RSeO2-NHNH2 (R = organyl).
Selenonyl compounds	CHEMONTID:0003120	Organoselenium compounds with the general formula RSe(=O)(=O)R'
Selenophenes	CHEMONTID:0004169	Organic compounds containing selenophene, a five-membered monocyclic aromatic ring composed of four C atoms and one selenium atom.
Selenoxides	CHEMONTID:0002473	Organoselenium compounds with the general formula RSe(=O)R' (R,R'= organyl).
Selones	CHEMONTID:0002041	Organic compounds that contains the functional group with the connectivity RC(=Se)R' (R,R' not H).
Semicarbazides	CHEMONTID:0000114	Organic compounds containing the semicarbazide functional group with the general structure R1(N)R2NR3C(=O)N(R4)R5 (R1-R5=H, alkyl, aryl), a derivative of urea, where the amine group on one side has been replace by a hydrazine group.
Semicarbazones	CHEMONTID:0000115	Organic compounds containing the semicarbazone functional group, with the general structure R2C=NNHC(=O)NH2.
Semilysobisphosphatidic acids	CHEMONTID:0001750	Bisphosphatidic acid analogues with three moles of fatty acid per mole of lipid.
Semioxamazones	CHEMONTID:0002029	Compounds containing a semioxamazone functional group, with the structure R2C=NNHC(=O)C(=O)NH2, which is derived from the condensation of aldehydes or ketones with semioxamazide.
Serine and derivatives	CHEMONTID:0004316	Compounds containing serine or a derivative thereof resulting from reaction of serine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom.
Serotonins	CHEMONTID:0001637	Compounds containing a serotonin moiety, which consists of an indole that bears an aminoethyl a position 2 and a hydroxyl group at position 5.
Serratane and onocerane triterpenoids	CHEMONTID:0002918	Triterpenoids with a structure based either on the serratane or the onocerane skeleton.
Sesquaterpenoids	CHEMONTID:0000357	Terpenoids with at least 7 consecutive isoprene units.
Sesquiterpene glycosides	CHEMONTID:0000263	Sesquiterpenoids linked to a saccharide moiety through a glycosidic bond.
Sesquiterpene lactones	CHEMONTID:0001543	Sesquiterpenoids containing a lactone ring.
Sesquiterpenoids	CHEMONTID:0001550	Terpenes with three consecutive isoprene units.
Sesterterpene lactones	CHEMONTID:0000702	Sesterterpenoids containing a lactone ring.
Sesterterpenoids	CHEMONTID:0001552	Terpenes composed of five consecutive isoprene units.
Shiff bases	CHEMONTID:0002394	Aldimines where the nitrogen atom of the aldimine group is linked to an alkyl or aryl group.
Shikimic acids and derivatves	CHEMONTID:0002278	Cyclitols containing a cyclohexanecarboxylic acid substituted with three hydroxyl groups at positions 3, 4, and 5.
Shogaols	CHEMONTID:0001708	Ginger derivatives containing a shogaol moiety, which consists of a benzene ring bearing a dec-4-en-3-one moiety, a methoxyphenyl group, a hydroxyl group and at positions 1, 3, and 4, respectively.
Short-chain aldehydes	CHEMONTID:0002230	An aldehyde with a chain length containing between 2 and 5 carbon atoms.
Short-chain hydroxy acids and derivatives	CHEMONTID:0000266	Hydroxy acids with an alkyl chain the contains less than 6 carbon atoms.
Short-chain keto acids and derivatives	CHEMONTID:0001416	Keto acids with an alkyl chain the contains less than 6 carbon atoms.
Silanols	CHEMONTID:0003201	Organosilicon compounds with the general formula R[Si]OH (R = organyl group).
Siloxanes	CHEMONTID:0004446	Saturated silicon-oxygen hydrides with unbranched or branched chains of alternating silicon and oxygen atoms (each silicon atom is separated from its nearest silicon neighbours by single oxygen atoms). The general structure of unbranched siloxanes is H3Si[OSiH2]nOSiH3. H3Si[OSiH2]nOSiH[OSiH2OSiH3]2 is an example of a branched siloxane. By extension hydrocarbyl derivatives are commonly included.
Silyl dihalides	CHEMONTID:0003897	Organosilicon compounds with the general formula RSi(R')(X)X; R-R' = organyl group, X = halogen atom.
Silyl enol ethers	CHEMONTID:0002053	Organic compounds containing an enolate bonded through its oxygen terminus to an organosilicon group.
Silyl ethers	CHEMONTID:0003200	Organic compounds containing a silicon atom covalently bonded to an alkoxy group. They have the general formula R1R2R3Si-O-R4 (R4 = aryl, alkyl).
Silyl monohalides	CHEMONTID:0003896	Organosilicon compounds with the general formula RSi(R')(R'')X; R-R'' = organyl group, X = halogen atom.
Silyl trihalides	CHEMONTID:0003898	Organosilicon compounds with the general formula RSi(X)(X)X; R = organyl group, X = halogen atom.
Simple glycosylceramides	CHEMONTID:0001428	Compounds containing a ceramide linked to a simple glycosyl moiety.
Simplexides	CHEMONTID:0001754	Glycolipids composed of a long chain secondary alcohol glycosylated by an alpha-D-glucosyl-(1->4)-beta-D-galactosyl disaccharide residue.
Sn1-2-MCPD monoesters	CHEMONTID:0003660	Compounds containing a 2-monochloropropane-1,3-diol skeleton that is esterified at the C1 terminal carbon atom only.
Sn1-3-MCPD monoesters	CHEMONTID:0003658	Compounds containing a 3-monochloropropane-1,2-diol skeleton that is esterified at the C1 terminal carbon atom only.
Sn2-3-MCPD monoesters	CHEMONTID:0003659	Compounds containing a 3-monochloropropane-1,2-diol skeleton that is esterified at the C2 terminal carbon atom only.
SO-thioperoxols	CHEMONTID:0003158	Thioperoxols with the general formula R-SOH (R = organyl group).
Solanidines and derivatives	CHEMONTID:0001703	Steroids with a structure based on the solanidane skeleton. Solanidane arises from the conversion of a cholestane side-chain into a bicyclic system.
Solanocapsine-type alkaloids	CHEMONTID:0002725	Steroidal alkaloids with a structure that is characterized by a docosahydronaphth[2,1:4',5']indene ring system fused to a pyrano[3,2-b]pyridine moiety.
Sophorolipids	CHEMONTID:0002201	Glycolipids containing a sophorose moiety linked glycosidically to the hydroxyl group of a 17-hydroxy-C18 saturated fatty acid. The carboxyl group of the fatty acid can be linked to the 4'-hydroxyl of the second glucose to form a lactone.
Sparteine, lupanine, and related alkaloids	CHEMONTID:0001795	Alkaloids with a structure based on either sparteine, lupanine, or derivatives thereof. These are tetracyclic compounds made of two fused quinolizidine ring systems.
Spatane and 4,10-secospatane diterpenoids	CHEMONTID:0001595	Diterpenoids with a structure based on the spatane or 4,10-secospatane skeleton. The spatane skeleton is formally derived from a prenylgermacrane by 1,5- and 6,10-cyclisation.
Sphaerane diterpenoids	CHEMONTID:0002880	Diterpenoids containing a sphaerane skeleton or tetradecahydro-5,8a,10a-trimethyl-1-(1-methylethyl)-phenanthrene.
Sphaeroane diterpenoids	CHEMONTID:0001147	Diterpenoids with a structure based on the 3a,6,9-trimethyl-3-(propan-2-yl)-tetradecahydrocyclohexa[e]azulene skeleton or formally 2,7-cyclodolabellane.
Sphenolobane diterpenoids	CHEMONTID:0003397	Diterpenoids with a structure characterized by a sphenolobane skeleton. They possess a trans-fused hydroazulenoid skeleton as a common structural motif, but differ in configuration at C(9), where a prenyl group is attached. Sphenolobane is also considered an 'extended' daucane skeleton, with a carbon side chain appended onto the cyclopentane ring.
Sphingolipids	CHEMONTID:0000257	Lipids containing backbone of sphingoid bases (e.g. Sphinogsine, sphinganine) usually bound to a fatty acid derivative through N-acylation.
Sphingomyelins	CHEMONTID:0001131	Sphingolipids containing a backbone formed of an alcohol - sphingosine, a phosphate group, a choline and fatty acid chain.
Sphingosylphosphorylcholines	CHEMONTID:0001972	Sphingolipids containing a sphingosine attached to the phosphate group of a phosphocholine.
Spironolactones and derivatives	CHEMONTID:0001807	Steroid lactones with a structure based on the spironolactone skeleton.
Spirosolanes and derivatives	CHEMONTID:0001704	Steroidal alkaloids with a structure containing a spirosolane skeleton. Siporosolane is a polycyclic compound that is characterized by a 1-oxa-6-azaspiro[4.5]decane moiety where the oxolane ring is fused to a docosahydronaphth[2,1:4',5']indene ring system. Spirosolane arises from the conversion of a cholestane side-chain into a bicyclic system containing a piperidine and a tetrahydrofuran ring.
Spirostanes and derivatives	CHEMONTID:0001700	Steroidal alkaloids with a structure containing a spirostane skeleton. Spirostanes are 16b,22:22,26-diepoxycholestanes, or 22,26-epoxyfurostans. The sixth ring so formed is known as ring F. Chemically, the spiro centre at C-22 has the character of an internal acetal derived from a 16b, 26-dihydroxycholestan-22-one.
Stannines	CHEMONTID:0002115	Compounds containing a benzene analogue in which one of the carbon atoms is replaced by a tin atom.
Stannoles	CHEMONTID:0002116	Compounds containing a five-member aromatic ring with one tin atom and four carbon atoms.
Stemarane diterpenoids	CHEMONTID:0003400	Diterpenoids with a structure characterized by a stemarane skeleton. Some characteristics include the bicyclic system C/D that is constituted by a bicyclo[3.2.1]octane fused to the bicyclic A/B system in a different fashion with respect to other tetracyclic diterpenes possessing the bicyclo[3.2.1]octane system. Moreover, the two contiguous quaternary carbon atoms, C(9) and C(10), are present, the former being a spirocyclic atom. Oxygenation can happen at positions C(2), C(7), C(13), C(17), C(18), and C(19).
Stemoamide-type alkaloids	CHEMONTID:0003914	Alkaloids which include a tricyclic 2H-furo[3,2-c]pyrrolo[1,2-a]azepine nucleus.
Stemona alkaloids	CHEMONTID:0003427	Alkaloids are characterized by a pyrrolo[1,2- a]azepine nucleus usually linked with two carbon chains mostly forming terminal lactone rings. Based on the different carbon chains attached to C-9 of the pyrroloazepine nucleus.
Stemonamine-type alkaloids	CHEMONTID:0003915	Alkaloids with a structure characterized by the tetracyclic 2AH,11H-spiro[1H-cyclopenta-[b]pyrrolo[1,2-a]azepine-11,2A-furan]-5A,10-dione nucleus with a spirolactone ring at C-12.
Stenine-type alkaloids	CHEMONTID:0003913	Alkaloids which can be structurally represented by the tetracyclic\nfuro[2,3-h]pyrrolo[3,2,1-jk][1]benzazepin-10(2H)-one nucleus.
Sterigmatocystins	CHEMONTID:0001817	A group of closely related fungal metabolites chemically characterized by a xanthone moiety fused to a dihydrodifurano or a tetrahydrodifurano moiety. The chemical difference among the various sterigmagocystins are the presence or absence of unsaturation at positions 2 and 3 of the difurano ring system, the substitution pattern on positions 6, 7, and 10 of the xanthone system and/or the substituent on position 3 of the difurano system. They are produced by Aspergilus spp. and Bipolaris spp.
Steroid acids	CHEMONTID:0003364	Compounds containing a carboxyl group attached to a steroid backbone.
Steroid esters	CHEMONTID:0001691	Compounds containing a steroid moiety which bears a carboxylic acid ester group.
Steroid glucuronide conjugates	CHEMONTID:0001447	Sterol lipids containing a glucuronide moiety linked to the steroid skeleton.
Steroid lactones	CHEMONTID:0001125	Sterol lipids containing a lactone moiety linked to the steroid skeleton.
Steroidal acyl CoAs	CHEMONTID:0001171	Acyl CoAs where the group acylated to the coenzyme A moiety is a steroid.
Steroidal alkaloid glycosides	CHEMONTID:0004156	Compounds made up of a steroidal alkaloid moiety which is glycosylated, usually at the C-3 or C-28 position.
Steroidal alkaloids	CHEMONTID:0002724	Alkaloids characterized by the presence of one or more alkylamino substituents attached to a steroidal skeleton. These are azasteroids in which a nitrogen atom forms an integral part of the steroid nucleus or may be present in the side chain.
Steroidal glycosides	CHEMONTID:0001013	Sterol lipids containing a carbohydrate moiety glycosidically linked to the steroid skeleton.
Steroidal saponins	CHEMONTID:0002364	Saponins in which the aglycone moiety is a steroid. The steroidal aglycone is usually a spirostane, furostane, spirosolane, solanidane, or curcubitacin derivative.
Steroids and steroid derivatives	CHEMONTID:0000258	Compounds based on the cyclopenta[a]phenanthrene carbon skeleton, partially or completely hydrogenated; there are usually methyl groups at C-10 and C-13, and often an alkyl group at C-17. By extension, one or more bond scissions, ring expansions and/or ring contractions of the skeleton may have occurred.
Steviol glycosides	CHEMONTID:0001756	Prenol lipids containing a carbohydrate moiety glycosidically linked to a steviol (a diterpenoid based on a 13-Hydroxykaur-16-en-18-oic acid) moiety.
Stichoneurine-type alkaloids	CHEMONTID:0003429	Stemona alkaloids with a structure that typically contains a 3-methyloxolan-2-one and a 5-propyloxolan-2-one moieties that are attached to the characteristic pyrrolo[1,2-a]azepine skeleton at the C3 and C9 position, respectively.
Stigmastanes and derivatives	CHEMONTID:0002031	Sterol lipids with a structure based on the stigmastane skeleton, which consists of a cholestane moiety bearing an ethyl group at the carbon atom C24.
Stilbene glycosides	CHEMONTID:0000142	Compounds structurally characterized by the presence of a carbohydrate moiety glycosidically linked to the stilbene skeleton.
Stilbenes	CHEMONTID:0000253	Organic compounds containing a 1,2-diphenylethylene moiety. Stilbenes (C6-C2-C6 ) are derived from the common phenylpropene (C6-C3) skeleton building block. The introduction of one or more hydroxyl groups to a phenyl ring lead to stilbenoids.
Stilbenolignans	CHEMONTID:0003495	Non-conventional lignans that derived from stilbene. They are characterized by a p-dioxin ring substituted at one carbon atom by a C3C6 (phenylpropan) group and fused to one ring of the stilbene moiety.
Straight chain fatty acids	CHEMONTID:0000333	Fatty acids with a straight aliphatic chain.
Streptamine aminoglycosides	CHEMONTID:0003576	Aminoglycosides containing the aminocyclitol the streptamine (1,3-diaminocyclohexane-2,4,5,6-tetrol) core.
Strictosidine alkaloids	CHEMONTID:0003791	Alkaloids with a structure that is based on the strictosidine skeleton, which contains the tricyclic beta-carboline moiety.
Strigolactones	CHEMONTID:0001284	Terpene lactones structurally characterized by the presence of an indeno[1,2-b]furan and a 2,5-dihydrofuran-2-one linked together to form a 3-methyl-5-{8-methyl-2-oxo-indeno[1,2-b]furan-3-ylidene]methoxy}-2,5-dihydrofuran-2-one skeleton.
Strychnos alkaloids	CHEMONTID:0002749	Alkaloids having a core structure based on the strychnan, stemmadenine (seco-curan), or the akuammicine (curan) skeleton.
Styrenes	CHEMONTID:0000037	Organic compounds containing an ethenylbenzene moiety.
Substituted imidazole-4-acetic acid and analogues	CHEMONTID:0004374	Aromatic heterocyclic compounds containing an imidazole ring, which is substituted at the 4-position by acetic acid (or a derivative thereof), and at the 2- or 5-position by any group.
Substituted imidazoles	CHEMONTID:0002310	Heterocyclic compounds containing an imidazole ring substituted at one or more positions.
Substituted pyrroles	CHEMONTID:0002257	Heterocyclic compounds containing a pyrrole ring substituted at one or more positions.
Sugar acids and derivatives	CHEMONTID:0000215	Compounds containing a saccharide unit which bears a carboxylic acid group.
Sugar alcohols	CHEMONTID:0002210	Hydrogenated forms of carbohydrate in which the carbonyl group (aldehyde or ketone, reducing sugar) has been reduced to a primary or secondary hydroxyl group.
Sugar amino acids and derivatives	CHEMONTID:0001366	Organic compounds containing a saccharide unit that bears both an amine group and a carboxylic acid group.
Sulfamic acid derivatives	CHEMONTID:0000039	Organic compounds containing a sulfamic acid moiety or a derivative, with the general structure R1N(R2)S(=O)2OR3 (R1,R2,R3=H, alkyl, aryl).
Sulfanilides	CHEMONTID:0000038	Organic aromatic compounds containing a sulfanilide moiety, with the general structure RS(=O)(=O)NC1=CC=CC=C1.
Sulfanylbenzoic acids	CHEMONTID:0002784	Benzoic acids which bear a sulfanyl group (R-SH) attached to the benzene ring.
Sulfanylbenzoic acids and derivatives	CHEMONTID:0002086	Benzoic acids (or derivatives) which bear a sulfanyl group (R-SH) attached to the benzene ring.
Sulfated fatty acids	CHEMONTID:0001425	Fatty acids containing linked to a sulfate group linked to its tail.
Sulfated flavonoids	CHEMONTID:0003005	Flavonoids that are sulfated at one or more positions.
Sulfated steroids	CHEMONTID:0001692	Sterol lipids containing a sulfate group attached to the steroid skeleton.
Sulfatides	CHEMONTID:0001440	An hydrogen sulfate esters of glycosphingolipids.
Sulfenes	CHEMONTID:0000010	S,S-Dioxides of thioaldehydes and thioketones, R2C=SO2.
Sulfenic acid esters	CHEMONTID:0001173	Compounds containing a sulfenic acid ester functional group with the general structure RSOR' (R,R'=alkyl, aryl).
Sulfenyl compounds	CHEMONTID:0003260	Organosulfur compounds a sulfenyl group with the general formula RS (R = organyl).
Sulfenyl halides	CHEMONTID:0003261	Organosulfur compounds with the general formula RSX (R = organyl, X = halogen atom).
Sulfimides	CHEMONTID:0002929	Organic derivatives of sulfimide, with the general formula RN=S(R=organic group).
Sulfinamidines	CHEMONTID:0001046	Compounds containing a sulfinamidine group, with the general structure RS(=NR)NR2.
Sulfines	CHEMONTID:0000009	S-Oxides of thioaldehydes and thioketones.
Sulfinic acid amides	CHEMONTID:0001175	Compounds derived from a sulfinic acid, RS(=O)OH (R not H), by replacement of -OH by -NR2.
Sulfinic acid esters	CHEMONTID:0001176	Compounds containing a sulfinic acid ester functional group with the general structure RS(=O)OR' (R,R'=alkyl, aryl).
Sulfinic acid halides	CHEMONTID:0001177	Compounds derived from a sulfinic acid, RS(=O)OH (R = organyl, not H), where the hydroxyl group is replace by a halogen atom.
Sulfinic acids	CHEMONTID:0001269	Compounds containing a sulfinic acid functional group, with the general structure RS(=O)OH (R = organyl, not H).
Sulfinic acids and derivatives	CHEMONTID:0000269	Compounds derived from sulfinic acid, with the general formula RS(=O)R' ( R not H, R'=any heteroatom).
Sulfinohydrazonic acids	CHEMONTID:0002535	Organic acids with the general formula RS(=NN)OH.
Sulfinohydrazonoperoxoic acids	CHEMONTID:0002899	Organic acids with the general formula RS(=NN)OOH.
Sulfinohydroximic acids	CHEMONTID:0002534	Organic compounds with the general formula HON=S(R)OH.
Sulfinoimidoperoxoic acids	CHEMONTID:0003156	Organic acids with the general formula RS(=N)-OOH (R=H, organic group).
Sulfinyl compounds	CHEMONTID:0003130	Organic compounds containing a sulfinyl group with the general formula RS(=O)R' (R = organyl, R' = any atom but O).
Sulfinyl halides	CHEMONTID:0003262	Organosulfur compounds with the general formula RS(=O)X (R = organyl, X = halogen atom).
Sulfinyl sulfones	CHEMONTID:0003591	Organic compounds containing a sulfinyl sulfone group, with the general structure RS(=O)S(R')(=O)=O or RS(=O)(=O)S(R')=O (R=organyl group, R'=H or organyl group).
Sulfinylamines	CHEMONTID:0001905	Compounds containing the sulfinylamine functional group, with the general structure RN=S=O.
Sulfinylbenzimidazoles	CHEMONTID:0001891	Polycyclic aromatic compounds containing a sulfinyl group attached at the position 2 of a benzimidazole moiety.
Sulfite esters	CHEMONTID:0002074	Organic compounds containing an organic group attached to the sulfite oxoanion, with the formula R[SO3]2-.
Sulfobenzoic acids	CHEMONTID:0000034	Benzoic acids carrying a sulfonyl group on the benzene ring.
Sulfonated stilbenes	CHEMONTID:0004785	Stilbenes that carry a sulfone group at one or more positions of either benzene rings.
Sulfonediimides	CHEMONTID:0003991	Compounds having the structure, RS(=NR)2R', formally derived from sulfones by replacing (=O)2 by (=NR)2. R = organyl group, R' = H or organyl group.
Sulfones	CHEMONTID:0000505	Compounds containing a sulfonyl group( which as the general structure RS(=O)2R' (R,R' =alkyl, aryl)) attached to two carbon atoms.
Sulfonic acid esters	CHEMONTID:0004435	Esters of sulfonic acid, which have the general structure RS(=O)2OR' (R,R' = organyl group or H).
Sulfonimidamides	CHEMONTID:0003154	Organic compounds with the general formula RS(=O)=NR' (R = organyl, R' = any atom but N).
Sulfonimidic acids	CHEMONTID:0003113	Organic acids with the general formula RS(O)(=NH)-OH (R=H, organic group).
Sulfonimidodithioic acids	CHEMONTID:0003146	Organic acids with the general formula RS(S)(=NH)-SH (R=H, organic group).
Sulfonimidoselenoic acids	CHEMONTID:0003147	Organic acids with the general formula SeS(R)=NR'(R=organyl, R' = any atom but N).
Sulfono(thioperoxoic) SO-acids	CHEMONTID:0004356	Organosulfur compounds with the general formula RSO2-SOH, where R is an organic substituent.
Sulfonodihydrazonic acids	CHEMONTID:0003114	Organic acids with the general formula RS(NNH2)2-OH (R=H, organic group).
Sulfonodiimidamides	CHEMONTID:0003155	Organosulfur compounds with the general formula HN=S(R)(=NH)N(R')R\" (R = organyl; R',R\" = any atom but N).
Sulfonodiimidic acids	CHEMONTID:0003151	Organic acids with the general formula RS(=NH)2-OH (R=H, organic group).
Sulfonodiimidoperoxoic acids	CHEMONTID:0003150	Organic acids with the general formula RS(=NH)2-OOH (R=H, organic group).
Sulfonohydrazides	CHEMONTID:0002959	Organic compounds with the general formula RS(=O)(=O)NHNH2.
Sulfonohydrazonamides	CHEMONTID:0003148	Organic acids with the general formula RS(O)(=NNH2)-NH2 (R=H, organic group).
Sulfonohydrazonic acids	CHEMONTID:0003112	Organic acids with the general formula RS(O)(=NNH2)-OH (R=H, organic group).
Sulfonohydrazonimidic acids	CHEMONTID:0003118	Organic acids with the general formula RCO-SH (R=H, organic group).
Sulfonohydrazonothioic o-acids	CHEMONTID:0003144	Organic acids with the general formula RS(S)(=NH2)-OH (R=H, organic group).
Sulfonohydrazonothioic s-acids	CHEMONTID:0003145	Organic acids with the general formula RS(O)(=NNH2)-SH (R=H, organic group).
Sulfonoperoxoic acids	CHEMONTID:0004359	Organosulfur compounds with the general formula RSO2-OOH, where R is an organic substituent.
Sulfonoselenoic Se-acids	CHEMONTID:0004360	Organosulfur compounds containing a selenium atom, and with the general formula RSI2-SeH, where R is an organic substituent.
Sulfonothioic O-acids	CHEMONTID:0004357	Organosulfur compounds with the general formula RS(O)(S)-OH.
Sulfonothioic S-acids	CHEMONTID:0004358	Organosulfur compounds with the general formula RS(O)(O)-SH, where R is an organic substituent.
Sulfonphthalides	CHEMONTID:0001874	Compounds containing a sulfonphthalide moiety, which consists of a benzene ring fused to an oxathiole-1,1-dione.
Sulfonyl azides	CHEMONTID:0003199	Organosulfur compounds with the general formula RS(=O)(=O)N=[N+][N-] (R = organyl).
Sulfonyl bromides	CHEMONTID:0001041	Compounds containing a sulfonyl (R-S(=O)2-R') functional group singly bonded to a bromine atom.
Sulfonyl chlorides	CHEMONTID:0001042	Compounds containing a sulfonyl (R-S(=O)2-R') functional group singly bonded to a chlorine atom.
Sulfonyl fluorides	CHEMONTID:0001043	Compounds containing a sulfonyl (R-S(=O)2-R') functional group singly bonded to a fluorine atom.
Sulfonyl halides	CHEMONTID:0000506	Compounds containing a sulfonyl (R-S(=O)2-R') functional group singly bonded to a halogen atom.
Sulfonyl iodides	CHEMONTID:0001044	Compounds containing a sulfonyl (R-S(=O)2-R') functional group singly bonded to an iodine atom.
Sulfonyl isocyanates	CHEMONTID:0004515	Organosulfur compounds that contain a sulfonyl group connected to an isocyanate group.
Sulfonyl isothiocyanates	CHEMONTID:0004516	Organosulfur compounds that contain a sulfonyl group connected to an isothiocyanate group.
Sulfonyl-1,2,3-triazoles	CHEMONTID:0001119	Cyclic compounds containing a sulfonyl group attached to a 1,2,3-triazole ring.
Sulfonyl-1,2,4-triazoles	CHEMONTID:0001120	Cyclic compounds containing a sulfonyl group attached to a 1,2,4-triazole ring.
Sulfonylamines	CHEMONTID:0002860	Compounds having the general structure RN=S(=O)2.
Sulfonylanilines	CHEMONTID:0001141	Compounds containing an aniline moiety, which is para-substituted by a sulfonyl group.
Sulfonylnitrenes	CHEMONTID:0003975	Organic compounds containing a nitrene to which a sulfonyl group is attached.
Sulfonyls	CHEMONTID:0001157	Compounds containing the sulfonyl group, with the general structure RS(=O)2R' ( R,R' must not be H).
Sulfonylureas	CHEMONTID:0000490	Organic compounds containing a sulfonyl group with the structure R-S(=O)2-R', where R' is an urea.
Sulfoquinovosyl 1-monoacylglycerols	CHEMONTID:0003063	Sulfoquinovosylmonoacylglycerols where the glycerol moiety is 1-O acylated.
Sulfoquinovosyl 2-monoacylglycerols	CHEMONTID:0003064	Sulfoquinovosylmonoacylglycerols where the glycerol moiety is 2-O acylated.
Sulfoquinovosyldiacylglycerols	CHEMONTID:0002264	Glycerolipids made up of a sulfonic acid linked to the C6 atom of glucose, which in turn is bound to the O3 atom of the a 1,2-diacylglycerol moiety.
Sulfoquinovosylmonoacylglycerols	CHEMONTID:0003062	Glycerolipids made up of a sulfonic acid linked to the C6 atom of glucose, which in turn is bound to the O3 atom of the a monoacylglycerol moiety.
Sulfosalicyclic acids	CHEMONTID:0002560	Salicylic acids with a sulfate group attached to the benzene ring.
Sulfosalicylic acids and derivatives	CHEMONTID:0002559	Salicylic acids (or derivatives thereof) with a sulfate group attached to the benzene ring.
Sulfoxides	CHEMONTID:0000491	Compounds containing a sulfoxide functional group, with the structure RS(=O)R' (R,R' not H).
Sulfur mustard compounds	CHEMONTID:0001279	Compounds containing having two beta-haloalkyl groups bound to a sulfur atom.
Sulfur-containing organoarsenic compounds	CHEMONTID:0004240	Organoarsenic compounds that containing a sulfur atom.
Sulfuric acid amide esters	CHEMONTID:0001186	Organic compounds containing the sulfuric acid amide ester functional group, with the generic structure ROS(=O)(=O)N(R')R'' (R = organyl, R',R''=H or organyl).
Sulfuric acid diamides	CHEMONTID:0001183	Organic compounds containing the sulfuric acid diamide functional group, with the generic structure R1N(R2)S(=O)(=O)ON(R3)R4 (R1-R4 = H or organyl.
Sulfuric acid diesters	CHEMONTID:0001184	Organic compounds containing the sulfuric acid diester functional group with the generic structure ROS(OR')(=O)=O, (R,R'=organyl group).
Sulfuric acid esters	CHEMONTID:0003455	Organic compounds containing a sulfate group that carries one or two O-ester groups.
Sulfuric acid monoamides	CHEMONTID:0001181	Organic compounds containing the sulfuric acid amid functional group, with the generic structure ROS(=O)(=O)N(R')R'' (R = any atom, R' = organyl, R''=H or organyl).
Sulfuric acid monoesters	CHEMONTID:0001185	Organic compounds containing the sulfuric acid monoester functional group, with the generic structure ROS(O)(=O)=O, (R=organyl group).
Sultams	CHEMONTID:0000509	Sulfonamides in which the S-N bond is part of a ring.
Sultims	CHEMONTID:0001387	Tautomeric forms of sultams, having a sulfur-nitrogen double bond as part of a ring.