Varenicline Impurity 56 CAS CATO-C4X-196256
| CAS No. | CATO-C4X-196256 |
| Molecular Formula | C16H14F3N3O |
| Molecular Weight | 321.30 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Varenicline Impurity 56 (CAS CATO-C4X-196256), a pharmacopoeial impurity reference standard (molecular formula C16H14F3N3O, MW 321.30 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Varenicline Impurity 56 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 321.30 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).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C16H14F3N3O |
| Molecular Weight | 321.30 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Varenicline Standards
- Varenicline Impurity 7 (CAS 357426-10-9)
- Varenicline Impurity 5 (CAS 950781-89-2)
- Varenicline Impurity 35 (CAS CATO-C4X-196235)
- Varenicline Impurity 18 (CAS 230615-70-0)
- Varenicline Impurity 55 (CAS CATO-C4X-196255)
- Varenicline Impurity 51 (CAS CATO-C4X-196251)
- Varenicline Impurity 1 (CAS 230615-53-9)
- Varenicline Impurity 63 (CAS CATO-C4X-196263)
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- Melitracen Impurity 19 (CAS CATO-C4X-120219)
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Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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