Entecavir Impurity C66 CAS 156422-39-8
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 156422-39-8 |
| Molecular Formula | C19H17N5O |
| Molecular Weight | 331.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Entecavir Impurity C66 (CAS 156422-39-8) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C19H17N5O. Molecular weight: 331.37 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C19H17N5O |
| Molecular Weight | 331.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Nitrogen Atoms | 5 |
Related Entecavir Standards
- Entecavir 4-Dimethylsilyl USP Impurity (CAS 870614-82-7)
- Entecavir Impurity 27 (CAS CATO-C4X-107727)
- Entecavir Impurity 28 (CAS CATO-C4X-107728)
- Entecavir Impurity 29 (CAS CATO-C4X-107729)
- Entecavir Impurity 30 (CAS CATO-C4X-107730)
- Entecavir-(R)-Methylethyl Carboxylic Acid (CAS 1415118-53-4)
- Entecavir-(S)-Methylethyl Carboxylic Acid (CAS 1415118-52-3)
- Entecavir Impurity 25 (CAS 110567-22-1)
Recommended Standards
- 2-Amino-6-(3,4-dimethoxyphenyl)-4-phenylpyridine-3-carbonitrile (CAS 156044-27-8)
- 2-Amino-4-(3,4-dimethoxyphenyl)-6-phenylnicotinonitrile (CAS 160729-09-9)
- N-(4-Amino-6-(prop-1-en-2-yl)-1,3,5-triazin-2-yl)-N-phenylbenzamide (CAS 143773-84-6)
- Upadacitinib Impurity 145 (CAS CATO-C4X-2405145)
- Nifedipine Impurity 35 (CAS CATO-C4X-141035)
- 2-(Difluoromethoxy)-1-fluoro-4-methoxybenzene (CAS 1261478-29-8)
- 2-[(4-{[Benzyl(methyl)amino]sulfonyl}anilino)carbonyl]cyclohexanecarboxylic acid (CAS 780791-12-0)
- 6-(Methoxyamino)-9H-purin-2-amine (CAS 60254-48-0)
- 1,3-Dihydroisobenzofuran-5-carbonyl chloride (CAS 153967-93-2)
- Semaglutide impurity 40 (CAS CATO-C4X-222640)
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 13829788188 / jacky.chen@cato-chem.com