2-Acetamido-4-hydroxybenzoic acid CAS 99358-07-3
| CAS No. | 99358-07-3 |
| Molecular Formula | C9H9NO4 |
| Molecular Weight | 195.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-Acetamido-4-hydroxybenzoic acid (CAS 99358-07-3), a certified reference material (molecular formula C9H9NO4, MW 195.17 g/mol) for analytical method development and quality control.
Structurally, 2-Acetamido-4-hydroxybenzoic acid (C9H9NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 195.17 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
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 | >95% |
| 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.) | 1985 |
| Nitrogen Atoms | 1 |
Related Acetamido Standards
- (E)-2-acetamido-3-(furan-2-yl)acrylic acid (CAS 99358-13-1)
- (Z)-2-Acetamido-3-(furan-2-yl)acrylic acid (CAS 89908-19-0)
- 3-acetamido-2-hydroxybenzoic acid (CAS 447410-00-6)
- 3-Acetamido-5-hydroxybenzoic Acid (CAS 93561-88-7)
- 2-Acetamido-6-hydroxybenzoic acid (CAS 409326-60-9)
- 2-Acetamido-3-(1H-imidazol-5-yl)acrylic acid (CAS 74294-76-1)
- 2-Acetamido-4-methylpyrimidine-5-carboxylic acid (CAS 23092-47-9)
- 6-Acetamido-5-methylpyrazine-2-carboxylic acid (CAS 408533-72-2)
Recommended Standards
- Dimethyl Pyridine-2,5-Dicarboxylate (CAS 881-86-7)
- Salicylamide-O-acetic acid (CAS 25395-22-6)
- 3,5-dimethylpyridine-2,6-dicarboxylic acid (CAS CATO-C3D-262241)
- Ropinirole Impurity 9 (CAS 23876-15-5)
- 3-(4-methylbenzoyl)-5H,6H,7H-pyrrolo[1,2-a]imidazol-2-amine (CAS 1377567-44-6)
- (2-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)thio)-1-(3,4-dimethoxyphenethyl)-1H-imidazol-5-yl)methanol (CAS 338422-54-1)
- Benzyl (4-(2-chloroacetamido)cyclohexyl)(methyl)carbamate (CAS 1353956-46-3)
- 3-(Pentafluorothio)benzoic Acid (CAS 833-96-5)
- 4,7-Dichloro-2-isopropylquinazoline (CAS 1185248-75-2)
- 2-(2-Chloroethyl)pyrazine hydrochloride (CAS 1427379-53-0)
- 7,13-Bis-O-(triethylsilyl) Baccatin III (CAS 150541-99-4)
- 2-Allyl-2H-benzo[d][1,2,3]triazole (CAS 82813-00-1)
- Diiodo(p-cymene)ruthenium(II) dimer (CAS 90614-07-6)
- Myelin Basic Protein (85-99) Peptide Antagonist (CAS 444305-16-2)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com