3,7-Dimethyl-1-oxo-3,4-dihydro-1h-2-benzopyran-3-carboxylic acid CAS 890646-74-9
| CAS No. | 890646-74-9 |
| Molecular Formula | C12H12O4 |
| Molecular Weight | 220.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3,7-Dimethyl-1-oxo-3,4-dihydro-1h-2-benzopyran-3-carboxylic 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.
3,7-Dimethyl-1-oxo-3,4-dihydro-1h-2-benzopyran-3-carboxylic acid (CAS 890646-74-9), molecular formula C12H12O4 and molecular weight 220.22 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3,7-Dimethyl-1-oxo-3,4-dihydro-1h-2-benzopyran-3-carboxylic acid (C12H12O4) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H12O4 |
| Molecular Weight | 220.22 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 chloroform, dichloromethane, ethyl acetate, 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 |
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- N'-(4,6-Dimethylbenzo[d]thiazol-2-yl)-2-fluorobenzohydrazide (CAS 851987-38-7)
- Ethyl 4-bromo-1-ethyl-1H-pyrrole-2-carboxylate (CAS 1480555-35-8)
- N-Z-D-Leucinol (CAS 166735-51-9)
- N-(Adamantan-1-yl)-2-{[6-(adamantan-1-yl)-3-cyanopyridin-2-yl]sulfanyl}acetamide (CAS 330852-25-0)
- 4-(4′-Hydroxyphenylazo)benzoic acid (CAS 105299-45-4)
- 4-Amino-3-thia-1-azatricyclo[5.2.2.0,2,6]undeca-2(6),4-diene-5-carbonitrile (CAS 36860-48-7)
- Norethindrone Impurity 6 (CAS 6424-05-1)
- 5-Methoxy-3,4-dimethyl-1H-pyrazole (CAS 128792-65-4)
- Ac, Gastrin Releasing Peptide (20-27), porcine (CAS 77714-20-6)
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