Any hydroxybenzoic acid having a single phenolic hydroxy substituent on the benzene ring.
| Member | Definition | Role |
|---|
| (+)-(7S)-sydonic acid | A sesquiterpenoid that is benzoic acid substituted by a hydroxy group at position 3 and a (2S)-2-hydroxy-6-methylheptan-2-yl group at position 4. It has been isolated from the sea fan derived fungus Aspergillus sydowii. | (+)-(7S)-sydonic acid |
| 3-amino-4-hydroxybenzoic acid | A monohydroxybenzoic acid that is 4-hydroxybenzoic acid carrying an additional amino substitutent at position 3. | 3-amino-4-hydroxybenzoic acid |
| 3-amino-5-hydroxybenzoic acid | A monohydroxybenzoic acid that is 3-hydroxybenzoic acid carrying an additional amino substitutent at position 4. | 3-amino-5-hydroxybenzoic acid |
| 3-hydroxyanthranilic acid | An aminobenzoic acid that is benzoic acid substituted at C-2 by an amine group and at C-3 by a hydroxy group. It is an intermediate in the metabolism of the amino acid tryptophan. | 3-hydroxyanthranilic acid |
| 3-hydroxybenzoic acid | A monohydroxybenzoic acid that is benzoic acid substituted by a hydroxy group at position 3. It has been isolated from Taxus baccata. It is used as an intermediate in the synthesis of plasticisers, resins, pharmaceuticals, etc. | 3-hydroxybenzoic acid |
| 3-methylsalicylic acid | A monohydroxybenzoic acid consisting of salicylic acid carrying a methyl group at the 3-position. | 3-methylsalicylic acid |
| 3,5-dinitrosalicylic acid | A monohydroxybenzoic acid consisting of 2-hydroxybenzoic acid having nitro substituents at the 3- and 5-positions. It is used in colorimetric testing for the presence of free carbonyl groups (C=O) in reducing sugars. | 3,5-dinitrosalicylic acid |
| 4-hydroxybenzoic acid | A monohydroxybenzoic acid that is benzoic acid carrying a hydroxy substituent at C-4 of the benzene ring. | 4-hydroxybenzoic acid |
| 4-methyl-3-hydroxyanthranilic acid | An aminobenzoic acid that is anthranilic acid substituted by a hydroxy group at position 3 and a methyl group at position 4. | 3-hydroxy-4-methylanthranilic acid |
| 5-chlorosalicylic acid | A monohydroxybenzoic acid that is 2-hydroxybenzoic acid (salicylic acid) in which the hydrogen at position 5 is replaced by chlorine. | 5-chlorosalicylic acid |
| 5-nitrosalicylic acid | A monohydroxybenzoic acid in which the hydroxy group is ortho- to the carboxylic acid group and which has a nitro substituent para- to the phenolic hydroxy group. | 5-nitrosalicylic acid |
| 6-methylsalicylic acid | A monohydroxybenzoic acid that is salicylic acid in which the hydrogen ortho to the carboxylic acid group is substituted by a methyl group. | 6-methylsalicylic acid |
| aurintricarboxylic acid | A member of the class of quinomethanes that is 3-methylidene-6-oxocyclohexa-1,4-diene-1-carboxylic acid in which the methylidene hydrogens are replaced by 4-carboxy-3-hydroxyphenyl groups. The trisodium salt is the biological stain 'chrome violet CG' while the triammonium salt is 'aluminon'. | aurintricarboxylic acid |
| avenanthramide b | A monohydroxybenzoic acid resulting from the formal condensation of the carboxy group of ferulic acid with the amino group of 2-amino-5-hydroxybenzoic acid. It is an oat phytoalexin produced in response to pathogen attack and elicitation. | avenanthramide B |
| diflunisal | An organofluorine compound comprising salicylic acid having a 2,4-difluorophenyl group at the 5-position. | diflunisal |
| fendosal | A benzoindole that is 4,5-dihydro-3H-benzo[e]indole in which the nitrogen is substituted by a 3-carboxy-4-hydroxyphenyl group. A non-narcotic analgesic and non-steroidal anti-inflammatory drug, it has greater analgesic and inflammatory responses than aspirin but with less gastrointestinal toxicity. | fendosal |
| isovanillic acid | A methoxybenzoic acid that is 4-methoxybenzoic acid bearing a hydroxy substituent at position 3. | 3-hydroxy-4-methoxybenzoic acid |
| lasalocid | A polyether antibiotic used for prevention and treatment of coccidiosis in poultry. | lasalocid |
| mesalamine | A monohydroxybenzoic acid that is salicylic acid substituted by an amino group at the 5-position. | mesalamine |
| nsc 74859 | An amidobenzoic acid obtained by formal condensation of the carboxy group of [(4-methylbenzene-1-sulfonyl)oxy]acetic acid with the amino group of 4-amino-2-hydroxybenzoic acid. | S3I-201 |
| salicylic acid | A monohydroxybenzoic acid that is benzoic acid with a hydroxy group at the ortho position. It is obtained from the bark of the white willow and wintergreen leaves. | salicylic acid |
| vanillic acid | A monohydroxybenzoic acid that is 4-hydroxybenzoic acid substituted by a methoxy group at position 3. | vanillic acid |