Bifendate Impurity A CAS 118159-47-0
| CAS No. | 118159-47-0 |
| Molecular Formula | C18H14O8 |
| Molecular Weight | 358.30 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Bifendate Impurity A is closely related to a flavonoid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Bifendate Impurity A (CAS 118159-47-0), a pharmacopoeial impurity reference standard (molecular formula C18H14O8, MW 358.30 g/mol) used for the identification and quantification of trace impurities in APIs.
Bifendate Impurity A (C18H14O8) contains a flavonoid core, a hydroxyl group, an ether linkage. 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).
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.
CATO manufactures Bifendate Impurity A under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H14O8 |
| Molecular Weight | 358.30 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 95% |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
Related Bifendate Standards
- Bifendate Impurity 2 (CAS CATO-C4X-25552)
- Bifendate Impurity N3 (CAS 79279-08-6)
- Bifendate Impurity 5 (CAS CATO-C4X-25555)
- Bifendate Impurity 4 (CAS CATO-C4X-25554)
- Bifendate Impurity N1 (CAS 128142-41-6)
- Bifendate impurity 10 (CAS CATO-C4X-255510)
- Bifendate Dicarboxylic Acid (CAS 105868-34-6)
- Bifendate Impurity N2 (CAS 205117-47-1)
Recommended Standards
- (+)-Dibenzoyl-D-tartaric Acid (CAS 17026-42-5)
- Phloroglucinol Impurity 76 (CAS CATO-C4X-221776)
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- Ramipril EP Impurity M (CAS 2743-38-6)
- Lamivudine Impurity B (CAS 141434-39-1)
- Sofosbuvir Impurity 57 (CAS 1337529-56-2)
- Oclacitinib impurity 8 (CAS CATO-C4X-30188)
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- 5-Phenyl-3-(o-tolyl)-1,2,4-oxadiazole (CAS 1400191-58-3)
- 3-(4-fluoropiperidin-4-yl)pyridine dihydrochloride (CAS 1803587-91-8)
- Des-Gln19-Tirzepatide (CAS CATO-CPTD788954)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com