2641AF 3,6-Dimethyl-isoxazolo[5,4-b]pyridine-4-carboxylic acid 900136-98-3 C9H8N2O3 CAS 900136-98-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 900136-98-3 |
| Molecular Formula | C9H8N2O3 |
| Molecular Weight | 192.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2641AF 3,6-Dimethyl-isoxazolo[5,4-b]pyridine-4-carboxylic acid 900136-98-3 C9H8N2O3 (CAS 900136-98-3) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C9H8N2O3. Molecular weight: 192.17 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C9H8N2O3 |
| Molecular Weight | 192.17 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Related AF Standards
- 4,5-Dimethyl-2-Nitrophenyl Isocyanate (CAS 102561-40-0)
- 2,7-Dimethyl-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 108129-01-7)
- 1,3-Dimethyl-1H-pyrazolo[3,4-d]pyrimidine-4-carboxylic acid (CAS 1095822-32-4)
- 8,9-Dimethyl-9H-purine-6-carboxylic acid (CAS 1095823-07-6)
- 3,7-Dimethyl-6-oxo-6,7-dihydroisoxazolo[5,4-b]pyridine-5-carbaldehyde (CAS 1352534-45-2)
- 2,7-Dimethyl-5-nitro-1,3-benzoxazole (CAS 1441051-52-0)
- 2,8-Dimethyl-6-nitro-[1,2,4]triazolo[1,5-a]pyridine (CAS 1794153-77-7)
- 1,5-Dimethyl-1H-pyrazolo[3,4-c]pyridazine-4-carboxylic acid (CAS 2468993-23-7)
Recommended Standards
- 1,4-Cubanedicarboxylic acid 32846-66-5 Pentacyclo[4.2.0.02,5.03,8.04,7]octane-1,4-dicarboxylic acid 1,4-Dicarboxycubane NSC 124087 NSC 679808 (CAS 32846-66-5)
- 5-(5-Methyl-furan-2-yl)-2H-pyrazole-3-carboxylic acid 3-(5-methyl-2-furyl)-1h-pyrazole-5-carboxylic acid 5-(5-methyl-furan-2-yl)-2 h-pyrazole-3-carboxylic acid 909092-64-4 (CAS 909092-64-4)
- Sedoheptulose anhydride monohydrate (CAS 469-90-9)
- 5-Octyl-1H-indole (CAS 1221257-24-4)
- 4-(Difluoromethyl)-2-hydroxy-6-(trifluoromethoxy)nicotinaldehyde (CAS 1806728-46-0)
- 4-chloro-3,5-diazatricyclo[6.2.2.0²,⁷]dodeca-2,4,6-triene (CAS 1855786-47-8)
- Tetrabenazine-d6 (CAS 1392826-25-3)
- 3-(2,3-Dimethylphenoxy)-2-phenylquinoline-4-carboxylic acid (CAS 400079-73-4)
- 5-Chloro-8-methyl-2-oxo-1,2-dihydroquinoline-4-carboxylic acid (CAS 1267145-97-0)
- Semaglutide impurity 96 (CAS CATO-C4X-222696)
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 13829788188 / jacky.chen@cato-chem.com