Varenicline Impurity 21 CAS 328055-92-1
| CAS No. | 328055-92-1 |
| Molecular Formula | C14H15N3 |
| Molecular Weight | 225.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C14H15N3, Varenicline Impurity 21 contains a nitrogen-containing heterocyclic scaffold, a nitrile group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 225.29 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Varenicline Impurity 21 (CAS 328055-92-1) is a certified pharmaceutical impurity reference standard with the molecular formula C14H15N3 and a molecular weight of 225.29 g/mol.
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 Varenicline Impurity 21 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 | C14H15N3 |
| Molecular Weight | 225.29 g/mol |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Related Varenicline Standards
- Varenicline Impurity 31 (CAS 1333145-89-3)
- Varenicline Impurity 54 (CAS CATO-C4X-196254)
- Varenicline Impurity 60 (CAS CATO-C4X-196260)
- Varenicline Lactam (CAS 873302-30-8)
- Varenicline Impurity 48 (CAS CATO-C4X-196248)
- Varenicline Impurity 8 (CAS 2724982-86-7)
- Varenicline Impurity 29 (CAS CATO-C4X-196229)
- Varenicline Impurity 61 (CAS CATO-C4X-196261)
Recommended Standards
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- LCZ-696 Impurity 20 (CAS CATO-C4X-169620)
- 3-(Isonicotinamido)tetrahydrothiophene-3-carboxylic acid (CAS 1283367-62-3)
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- 3-methylpiperidin-4-ol hydrochloride (CAS 1185293-84-8)
- 2’,6’-Dimethyl-4’-[3-(methylsulfonyl)propoxy]biphenyl-3-carbaldehyde (CAS 1000413-84-2)
- 6-Bromo-4,5-difluoro-3H-1,2,3-benzotriazole (CAS 1381944-47-3)
- [β-Asp]9-Semaglutide (CAS CATO-CPTD788605)
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