(R)-5-Chloro-8-methoxy-3-methyl-1-oxo-3,4-dihydro-1H-isochromene-7-carboxylic Acid CAS 1421840-16-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1421840-16-5 |
| Molecular Formula | C12H11ClO5 |
| Molecular Weight | 270.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(R)-5-Chloro-8-methoxy-3-methyl-1-oxo-3,4-dihydro-1H-isochromene-7-carboxylic Acid (CAS 1421840-16-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C12H11ClO5. Molecular weight: 270.67 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C12H11ClO5 |
| Molecular Weight | 270.67 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
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