2-Oxo-2H-pyran-6-carboxylic acid CAS 672-67-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 672-67-3 |
| Molecular Formula | C6H4O4 |
| Molecular Weight | 140.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Oxo-2H-pyran-6-carboxylic acid (CAS 672-67-3) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C6H4O4. Molecular weight: 140.09 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C6H4O4 |
| Molecular Weight | 140.09 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Recommended Standards
- 2-Oxo-2H-pyran-3-carboxylic acid (CAS 3040-20-8)
- 4,6-Dihydro-1H,3H-furo[3,4-c]furan-1,3-dione (CAS 2848675-00-1)
- 2,6-Difluoronicotinonitrile (CAS 869557-17-5)
- 3-Bromo-6-fluoropyridine-2-carbaldehyde (CAS 1227603-17-9)
- 5-Fluoro-2-(1-phenyl-1H-pyrazol-5-yl)phenol (CAS 876950-40-2)
- N,N-Bis(2-chloroethyl)-4-((2-(7-(trifluoromethyl)quinolin-4-yl)hydrazineylidene)methyl)aniline (CAS 91919-63-0)
- 4-(3,4-Dimethylphenyl)butan-1-ol (CAS 1082435-12-8)
- Methyl 4-bromocyclohexane-1-carboxylate (CAS 101654-20-0)
- Oxoadipicacid (CAS 3184-35-8)
- Semaglutide impurity 227 (CAS CATO-C4X-2226227)
Why CATO?
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