263764-83-6 7H-3a,7-Epoxyfuro[2,3-d]oxepin-2(3H)-one, tetrahydro-7-methyl-,(3aR,7S,8aR)- CAS 263764-83-6
| CAS No. | 263764-83-6 |
| Molecular Formula | C9H12O4 |
| Molecular Weight | 184.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
263764-83-6 7H-3a,7-Epoxyfuro[2,3-d]oxepin-2(3H)-one, tetrahydro-7-methyl-,(3aR,7S,8aR)- (C9H12O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
263764-83-6 7H-3a,7-Epoxyfuro[2,3-d]oxepin-2(3H)-one, tetrahydro-7-methyl-,(3aR,7S,8aR)- (CAS 263764-83-6) is a high-purity analytical reference standard with the molecular formula C9H12O4 and a molecular weight of 184.19 g/mol.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 263764-83-6 7H-3a,7-Epoxyfuro[2,3-d]oxepin-2(3H)-one, tetrahydro-7-methyl-,(3aR,7S,8aR)- 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.
Physical & Chemical Properties
| Molecular Formula | C9H12O4 |
| Molecular Weight | 184.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
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