Bifendate Impurity N1 CAS 128142-41-6
| CAS No. | 128142-41-6 |
| Molecular Formula | C18H16O9 |
| Molecular Weight | 376.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Bifendate Impurity N1 (CAS 128142-41-6), a pharmacopoeial impurity reference standard (molecular formula C18H16O9, MW 376.31 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C18H16O9, Bifendate Impurity N1 contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 376.31 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Bifendate Impurity N1 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 | C18H16O9 |
| Molecular Weight | 376.31 g/mol |
| Appearance | Pale yellow to 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
Related Bifendate Standards
- Bifendate Impurity 5 (CAS CATO-C4X-25555)
- Bifendate impurity 10 (CAS CATO-C4X-255510)
- Bifendate Impurity N3 (CAS 79279-08-6)
- Bifendate Dicarboxylic Acid (CAS 105868-34-6)
- Bifendate Impurity 2 (CAS CATO-C4X-25552)
- Bifendate Impurity A (CAS 118159-47-0)
- Bifendate Impurity N2 (CAS 205117-47-1)
- Bifendate Impurity A (CAS 1181519-47-0)
Recommended Standards
- Gemcitabine Impurity 10 (CAS 1217452-91-9)
- 1,3,4-Triphenyl-1H-1,2,4-triazole-5(4H)-selenone (CAS 185761-76-6)
- Methyl 1-2-3-4-tetra-O-acetyl-α-L-idopyranuronate (CAS 108032-41-3)
- N-methyl-4-(4-nitro-2-(trifluoromethyl)phenoxy)benzenesulfonamide (CAS 1858250-61-9)
- Metoprolol EP Impurity O HCl (CAS 1486464-40-7)
- Oxybutynin Impurity 6 (CAS 76142-48-8)
- Prednisolone Impurity 49 (CAS CATO-C4X-173749)
- Methyl 3-[2-({2-[2-(morpholin-4-yl)acetamido]phenyl}sulfanyl)acetamido]thiophene-2-carboxylate (CAS 478045-11-3)
- Benzyl ((1S,2S)-2-amino-1-(4-methyl-2,6,7-trioxabicyclo[2.2.2]octan-1-yl)propyl)carbamate (CAS 244052-12-8)
- 3-Allyl-2,4-dimethylfuran (CAS 75565-77-4)
- 8-Ethyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 170648-67-6)
- Darunavir Impurity 38 (CAS CATO-C4X-160638)
- 5-Amino-2-methoxyphenol (CAS 1687-53-2)
- Tau Peptide (307-321) trifluoroacetate salt (CAS 330456-50-3)
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