4H-Chromene-2-carboxylic acid CAS 67283-74-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 67283-74-3 |
| Molecular Formula | C10H8O3 |
| Molecular Weight | 176.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4H-Chromene-2-carboxylic acid (CAS 67283-74-3) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C10H8O3. Molecular weight: 176.17 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C10H8O3 |
| Molecular Weight | 176.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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.) | 1976 |
Related H Standards
- 2H-chromene-8-carboxylic acid (CAS 1935147-76-4)
- 2H-Chromene-3-carboxylic acid (CAS 22649-28-1)
- 2H-Chromene-5-carboxylic acid (CAS 843652-50-6)
- 2H-chromene-6-carboxylic acid (CAS 527681-43-2)
- 2h-Chromene-3-carboxamide (CAS 10185-00-9)
- 2H-chromene-3-carbaldehyde (CAS 51593-69-2)
- 2H-chromene-3-carbothioamide (CAS 423768-57-4)
- 2H-Chromene-3-carbonyl chloride (CAS 41873-72-7)
Recommended Standards
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- 4-Hydroxy-1-methyl-1,8-naphthyridin-2(1H)-one (CAS 97510-72-0)
- 4-Ethynyl-2-methoxybenzoic acid (CAS 2490403-84-2)
- Ethyl 1-(methylsulfonyl)piperidine-3-carboxylate (CAS 349625-89-4)
- 2-tert-Butyl 4-methyl 6-chloro-1-oxo-1H-pyrrolo[3,4-c]pyridine-2,4(3H)-dicarboxylate (CAS 2420419-13-0)
- 5,5-Difluoro-2-azabicyclo[2.2.2]Octane-3-carboxylic acid hydrochloride (CAS 1822554-55-1)
- 8-Methylquinoline-6-carboxylic acid (CAS 926217-76-7)
- 6-(3,4-Dimethylphenyl)-3-(piperidin-2-yl)-[1,2,4]triazolo[4,3-b]pyridazine (CAS 1706459-18-8)
- Methyl (R)-6-(1-hydroxyethyl)-5-(1H-pyrazol-1-yl)picolinate (CAS 2435611-70-2)
- Akt/SKG Substrate Peptide (CAS 276680-69-4)
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