3,4-Dihydro-8-hydroxy-3-methyl-1-oxo-1H-2-benzopyran-7-carboxylic Acid Methyl Ester CAS 83769-04-4
| CAS No. | 83769-04-4 |
| Molecular Formula | C12H12O5 |
| Molecular Weight | 236.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3,4-Dihydro-8-hydroxy-3-methyl-1-oxo-1H-2-benzopyran-7-carboxylic Acid Methyl Ester meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
3,4-Dihydro-8-hydroxy-3-methyl-1-oxo-1H-2-benzopyran-7-carboxylic Acid Methyl Ester (CAS 83769-04-4) is a high-purity analytical reference standard with the molecular formula C12H12O5 and a molecular weight of 236.22 g/mol.
The molecular framework of 3,4-Dihydro-8-hydroxy-3-methyl-1-oxo-1H-2-benzopyran-7-carboxylic Acid Methyl Ester (C12H12O5) 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 the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C12H12O5 |
| Molecular Weight | 236.22 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1980 |
Related Dihydro Standards
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Recommended Standards
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