3-(Acetylamino)-4-hydroxybenzoic acid CAS 91004-38-5
| CAS No. | 91004-38-5 |
| Molecular Formula | C9H9NO4 |
| Molecular Weight | 195.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-(Acetylamino)-4-hydroxybenzoic acid is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 3-(Acetylamino)-4-hydroxybenzoic acid (CAS 91004-38-5), a certified reference material (molecular formula C9H9NO4, MW 195.17 g/mol) for analytical method development and quality control.
The molecular framework of 3-(Acetylamino)-4-hydroxybenzoic acid (C9H9NO4) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 3-(Acetylamino)-4-hydroxybenzoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H9NO4 |
| Molecular Weight | 195.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 1 |
Related Acetylamino Standards
- 2-(acetylamino)-4-Pyridinecarboxylic acid methyl ester (CAS 98953-21-0)
- 4-Acetylamino-2-amino-benzoic acid (CAS 43134-76-5)
- 98953-23-2 Methyl 6-(acetylamino)pyridine-3-carboxylate methyl 6-acetamidopyridine-3-carboxylate (CAS 98953-23-2)
- 6-(Acetylamino)-4-methylpyridine-3-boronic acid (CAS 1111637-72-9)
- 3-(acetylamino)-2-methylbenzoic acid (CAS 103204-68-8)
- Methyl 4-(acetylamino)benzoate (CAS 17012-22-5)
- 3-(Acetylamino)benzoyl chloride (CAS 90531-74-1)
- (Acetylamino)(2-thienyl)acetic acid (CAS 68802-32-4)
Recommended Standards
- 3-(2-Nitrophenyl)propanoic Acid (CAS 2001-32-3)
- 3-(Amino(carboxy)methyl)benzoic acid (CAS 2196-57-8)
- 3-(2-Amino-2-oxoethoxy)benzoic acid (CAS 869942-82-5)
- 3-(Ethoxycarbonyl)picolinic acid (CAS 887587-64-6)
- 1-(4-Methoxyphenyl)-4-[(4-methylphenyl)sulfanyl]-6-oxo-1,6-dihydropyridazine-3-carbohydrazide (CAS 338395-92-9)
- 620-32-6 Benzene,1'-[sulfonylbis(methylene)]bis- Benzyl sulfone Dibenzyl sulfone NSC-212545 NSC212545 (CAS 620-32-6)
- 4-(3,3-dimethylbutoxy)-2-(2,6-dioxo-3-piperidyl)isoindoline-1,3-dione (CAS 1061605-06-8)
- Nebivolol Impurity 6（SS,SS） (CAS 119365-28-5)
- 5-Phenylisothiazole-3-carboxylic acid (CAS 1732-46-3)
- 2,4-Di-tert-butyl-1-methoxybenzene (CAS 17177-98-9)
- (S)-2-Amino-2-(4-(trifluoromethoxy)phenyl)ethanol (CAS 1213455-86-7)
- (3R,4R)-1-(Benzyloxy)-4-methyl-3-[[(R)-1-phenylethyl]amino]-2-pyrrolidinone (CAS 130865-72-4)
- Tert-butyl (((2S,4S)-4-(trifluoromethyl)pyrrolidin-2-yl)methyl)carbamate (CAS 2306252-48-0)
- Tirzepatide Impurity 24 X TFA Salt (CAS CATO-C4X-324024)
Why CATO?
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