Bisphenol A Impurity 1 CAS CATO-C4X-21191
| CAS No. | CATO-C4X-21191 |
| Molecular Formula | C15H20O5 |
| Molecular Weight | 280.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Bisphenol A Impurity 1 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 280.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies Bisphenol A Impurity 1 (CAS CATO-C4X-21191), a pharmacopoeial impurity reference standard (molecular formula C15H20O5, MW 280.32 g/mol) used for the identification and quantification of trace impurities in APIs.
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), Bisphenol A 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 | C15H20O5 |
| Molecular Weight | 280.32 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Bisphenol Standards
Recommended Standards
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- Captopril EP Impurity A (Captopril disulfide) (CAS 64806-05-9)
- Ilaprazole Impurity 127 (CAS CATO-C4X-1130127)
- Fluocinolone Acetonide Impurity 23 (CAS CATO-C4X-238123)
- 8-Methoxyquinolin-4-amine (CAS 220844-65-5)
- 4-(2,5-Bis-trifluoromethylphenyl)-pyridine (CAS 1214388-92-7)
- 3-(Benzyloxy)-5-nitrobenzenesulfonyl chloride (CAS 1393546-64-9)
- 2-Hydroxy-4-(1-methyl-1-nitroethyl)-tetrahydrofuran(Mixture of Diastereomers) (CAS 176793-54-7)
- 2-((6,8-Dichloro-4-hydroxyquinazolin-2-yl)thio)acetic acid (CAS 87634-47-7)
- Methyl (1-phenylethyl)alaninate (CAS 1497398-45-4)
- (Leu31,Pro3?)-Neuropeptide Y (human, rat) trifluoroacetate salt (CAS 132699-73-1)
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