3-Hydroxy-2-methylisonicotinic acid CAS 4328-92-1
| CAS No. | 4328-92-1 |
| Molecular Formula | C7H7NO3 |
| Molecular Weight | 153.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Hydroxy-2-methylisonicotinic acid.
3-Hydroxy-2-methylisonicotinic acid (CAS 4328-92-1) is a high-purity analytical reference standard with the molecular formula C7H7NO3 and a molecular weight of 153.14 g/mol.
3-Hydroxy-2-methylisonicotinic acid (C7H7NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures 3-Hydroxy-2-methylisonicotinic 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 | C7H7NO3 |
| Molecular Weight | 153.14 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, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related Hydroxy Standards
- 2-(2-Hydroxy-3-pyridyl)acetic Acid (CAS 100960-03-0)
- 6-Hydroxy-3-methylpyridine-2-carboxylic acid (CAS 115185-81-4)
- 5-Hydroxy-3-methylpicolinic acid (CAS 1211542-19-6)
- 5-Hydroxy-6-methylpicolinic acid (CAS 121447-41-4)
- 3-Hydroxy-1,5-pentanedioic-2,2,3,4,4-d5 Acid (CAS 1219805-72-7)
- 2-Hydroxy-5-methylpyridine-4-carboxylic acid (CAS 1227513-73-6)
- 3-Hydroxy-4-methylpyridine-2-carboxylic acid (CAS 1256788-22-3)
- 4-Hydroxy-5-methoxynicotinaldehyde (CAS 1256809-10-5)
Recommended Standards
- 3-Hydroxy-2-methoxyisonicotinaldehyde (CAS 874619-98-4)
- 3-Hydroxy-5-methylpicolinic acid (CAS 672957-95-8)
- 3-hydrazinylpyridine-4-carboxylic acid (CAS 339364-15-7)
- 3-Methoxyisonicotinic Acid (CAS 654663-32-8)
- (2-Bromo-3,4-difluorophenyl)methanamine hydrochloride (CAS 2231675-44-6)
- 3-Aminoadamantane-1-carboxylic Acid (CAS 6240-10-4)
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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