FCN437 Impurity 1 CAS 1665-65-2
| CAS No. | 1665-65-2 |
| Molecular Formula | C8H14O4S2 |
| Molecular Weight | 238.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
FCN437 Impurity 1 (CAS 1665-65-2) is a certified pharmaceutical impurity reference standard with the molecular formula C8H14O4S2 and a molecular weight of 238.32 g/mol.
FCN437 Impurity 1 (C8H14O4S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), FCN437 Impurity 1 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 | C8H14O4S2 |
| Molecular Weight | 238.32 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 2 |
Recommended Standards
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- 2-Bromo-4-(4-methylphenyl)-1-butene (CAS 731772-22-8)
- 5-(5-((1-(3-Carboxyphenyl)-3-methyl-5-oxo-1H-pyrazol-4(5H)-ylidene)methyl)furan-2-yl)-2-chlorobenzoic acid (CAS 292065-64-6)
- 4-((3-Bromo-4-methoxybenzylidene)amino)-3-(3-ethoxyphenyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 613249-85-7)
- 4-(Difluoromethyl)-5-nitropyridin-2-ol (CAS 1805328-49-7)
- 3,5-Diethyl-4-((tetrahydro-2H-pyran-4-yl)oxy)-1H-pyrazole (CAS 476692-22-5)
- Met(O)14-Exenatide trifluoroacetate salt (CAS 1678417-38-3)
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