ClassyFire: Listing 4825 chemical categories

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Name	ChemOnt ID	Description
4-alkoxyphenols	CHEMONTID:0004628	Phenols that carry an alkoxy group at the 4-position of the benzene ring.
4-aminoquinolines	CHEMONTID:0004537	Organic compounds containing an amino group attached to the 4-position of a quinoline ring system.
4-aminosalicyclic acids and derivatives	CHEMONTID:0003038	Aminosalicylic acids or derivatives carrying an amino group at the C-4 atom of the benzene ring.
4-aminosalicylic acids	CHEMONTID:0003011	Aminosalicylic acids carrying an amino group at the C-4 atom of the benzene ring.
4-Anilinoquinazolines	CHEMONTID:0004391	Organic heterocyclic compounds containing a quinazoline that is N-linked to an aniline.
4-Anilinoquinolines	CHEMONTID:0004368	Compounds containing a quinoline ring system that is N-linked to an aniline group at the 4-position.
4-aroylquinolines	CHEMONTID:0003912	Compounds containing a quinoline which carries an aroyl group at the 4-position. An aroyl group is a univalent radical R-CO- derived from an aromatic carboxylic acid.
4-arylsulfanyl-substituted kainoids	CHEMONTID:0004082	Kainoids carrying an aryl sulfanyl group at the 4-position of the pyrrolidine ring.
4-azaandrostanes	CHEMONTID:0004824	Azasteroids that are characterized by an androstane skeleton, where the carbon atom at the 4-position has been replaced by a nitrogen atom.
4-azasteroids and derivatives	CHEMONTID:0003056	Azasteroids where the carbon atom at position 4 is replaced by a nitrogen atom.
4-benzylpiperidines	CHEMONTID:0003090	Organic compounds containing a benzyl group attached to the 4-position of a piperidine.
4-carboxy steroids	CHEMONTID:0003492	Steroid compounds that carry a carboxyl group at the C4-atom of the steroid backbone.
4-chlorocatechols	CHEMONTID:0002697	Chlorocatechols with the chlorine atom attached at position C4 of the benzene ring.
4-cyclopropylisoxazoles	CHEMONTID:0004726	Aromatic heterocyclic compounds containing an isoxazole ring substituted at the ring 4-position with a cyclopropyl group.
4-halobenzoic acids	CHEMONTID:0003103	Benzoic acids carrying a halogen atom at the 4-position of the benzene ring.
4-halobenzoic acids and derivatives	CHEMONTID:0003100	Benzoic acids or derivatives carrying a halogen atom at the 4-position of the benzene ring.
4-halophenylacetic acids	CHEMONTID:0004697	Aromatic compounds containing a phenylacetic acid, which is para-substituted with a halogen atom.
4-Hydrocarbylideneazlactones	CHEMONTID:0004303	Heterocyclic compounds containing a substituted 1,3-oxazoline ring, and with the general structure RC(R')=C1N=C(R'')OC1=O. They are often referred to as 'unsaturated azlactones'.
4-hydroxy-2-alkylquinolines	CHEMONTID:0001464	Organic compounds containing a quinoline moiety with a hydroxyl group attached to the C4 atom, and an alkyl chain attached to the C2 atom.
4-hydroxy-3-polyprenylbenzoic acids	CHEMONTID:0004021	Benzoic acids that are substituted at the 3-position by any polyprenyl group and at the 4-position by a hydroxyl group.
4-hydroxy-6,7-benzomorphans	CHEMONTID:0004822	Aromatic heteropolycyclic compounds containing a 6,7-benzomorphan skeleton, which is hydroxylated at the ring 4-position.
4-hydroxycoumarins	CHEMONTID:0002907	Coumarins that contain one or more hydroxyl groups attached to C4-position the coumarin skeleton.
4-hydroxyflavonoids	CHEMONTID:0002988	Flavonoids that bear one hydroxyl group at the C-4 position of the flavonoid skeleton.
4-Hydroxymercuribenzoic acids	CHEMONTID:0004032	Benzoic acids containing a hydroxymercury (-HgOH) group attached to the 4-position of the benzene moiety.
4-Mercuribenzoic acids	CHEMONTID:0004035	Benzoic acids containing a mercury atom attached to the 4-position of the benzene moiety.
4-methoxy-1,2,3-triazines	CHEMONTID:0004732	Aromatic heterocyclic compounds containing a 1,2,3-triazine ring, which is substituted at the 4-position with a methoxy group.
4-nitroquinoline N-oxides	CHEMONTID:0002779	Nitroquinoline derivative bearing a nitro group at ring position 4 and N-oxide group at ring position 1.
4-O-methylated flavonoids	CHEMONTID:0002589	Flavonoids with methoxy groups attached to the C4 atom of the flavonoid backbone.
4-O-methylated isoflavonoids	CHEMONTID:0002599	Isoflavonoids with methoxy groups attached to the C4 atom of the isoflavonoid backbone. Isoflavonoids are natural products derived from 3-phenylchromen-4-one.
4-phenyltetrahydroisoquinolines	CHEMONTID:0002957	Compounds containing a phenyl group attached to the C4-atom of a tetrahydroisoquinoline moiety.
4-prenylated 2-arybenzofurans	CHEMONTID:0003511	2-arylbenzofuran flavonoids featuring a C5-isoprenoid unit at the 4-position.
4-prenylated flavanones	CHEMONTID:0003648	Flavanones that features a C5-isoprenoid substituent at the 4-position.
4-prenylated flavans	CHEMONTID:0003640	Flavans that features a C5-isoprenoid substituent at the 4-position.
4-prenylated xanthones	CHEMONTID:0003518	Organic compounds containing a C5-isoprenoid group linked to a xanthone moiety at the 4-position. Xanthone is a tricyclic compound made up of two benzene rings linearly fused to each other through a pyran ring that carries a ketone group.
4-quinolinemethanols	CHEMONTID:0004538	Organoheterocyclic compounds containing a quinoline moiety substituted at the 4-position with a methanol.
4-sulfobenzoic acids	CHEMONTID:0002762	Sulfobenzoic acid carrying the sulfonyl group at the 4-position of the benzene group.
4-thia fatty acids	CHEMONTID:0003349	Thia fatty acids with the general structure RC(S)CCC(=O)OH.
4-Thiopyrimidines	CHEMONTID:0004172	Aromatic heterocyclic compounds containing a pyrimidine ring where the carbon at the 4-position involved in a C=S bond.
4,5-dioxoaporphines	CHEMONTID:0003326	Alkaloids that contains the tetracyclic aporphine skeleton with two C=O groups at the 4- and 5-positions.
4,5-disubstituted 2-deoxystreptamines	CHEMONTID:0003573	2-deoxystreptamine aminoglycosides that a glycosidically linked to a pyranose of furanose unit at the C4- and C5-positions.
4,5-disubstituted oxazoles	CHEMONTID:0002640	Compounds containing an oxazole ring substituted at positions 4 and 5 only. Oxazole is a five-membered aromatic heterocycle with one oxygen, one nitrogen, and three carbon atoms. Isomers include 1,2-oxazole and 1,3-oxazole.
4,5-disubstituted thiazoles	CHEMONTID:0002636	Compounds containing a thiazole ring substituted at positions 4 and 5 only.
4,5-epoxy-10-normorphinans	CHEMONTID:0003774	Alkaloids with a structure based on the 4,5-epoxy-10-normorphinan skeleton. These compounds possess a morphinan skeleton that lacks B-ring.
4,6-disubstituted 2-deoxystreptamines	CHEMONTID:0003574	2-deoxystreptamine aminoglycosides that a glycosidically linked to a pyranose of furanose unit at the C4- and C6-positions.
4,6-disubstituted quinolizidines	CHEMONTID:0003785	Compounds containing a quinolizine ring system that is substituted only at the 4- and 6-positions. Some alkaloids possessing a quinolizidine disubstituted at the 4- and 6-positions with alkyl groups have been isolated.
4'-hydroxyflavonoids	CHEMONTID:0002989	Flavonoids that bear one hydroxyl group at the C-4' position of the flavonoid skeleton.
4'-O-methylated flavonoids	CHEMONTID:0002596	Flavonoids with methoxy groups attached to the C4' atom of the flavonoid backbone.
4'-O-methylated isoflavonoids	CHEMONTID:0002606	Isoflavonoids with methoxy groups attached to the C4' atom of the isoflavonoid backbone. Isoflavonoids are natural products derived from 3-phenylchromen-4-one.
4'-O-methylisoflavones	CHEMONTID:0002687	Isoflavones with methoxy groups attached to the C4' atom of the isoflavone backbone.
4'-prenylated 2-arybenzofurans	CHEMONTID:0003516	2-arylbenzofuran flavonoids featuring a C5-isoprenoid unit at the 4'-position.
4'-prenylated flavans	CHEMONTID:0003644	Flavans that features a C5-isoprenoid substituent at the 4'-position.
4a-homomorphinans	CHEMONTID:0003772	Alkaloids with a structure based on the 4a-homomorphinan skeleton. 4a-homomorphinan is a tetracyclic compound similar to morphinan, with the difference that the benzene ring is replaced by a cycloheptatriene ring.