Verapamil Impurity 19 CAS CATO-C4X-177819
| CAS No. | CATO-C4X-177819 |
| Molecular Formula | C13H20ClNO2 |
| Molecular Weight | 257.76 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Verapamil Impurity 19 (CAS CATO-C4X-177819), a pharmacopoeial impurity reference standard (molecular formula C13H20ClNO2, MW 257.76 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C13H20ClNO2, Verapamil Impurity 19 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 257.76 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).
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 | C13H20ClNO2 |
| Molecular Weight | 257.76 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Verapamil Standards
- Verapamil Impurity 51 (CAS CATO-C4X-177851)
- Verapamil Impurity 17 (CAS CATO-C4X-177817)
- Verapamil EP Impurity D (CAS 36770-74-8)
- Verapamil Impurity N1 (CAS 102201-30-9)
- Verapamil Impurity 20 (CAS 27339-25-9)
- Verapamil Impurity 33 (CAS 27487-66-7)
- Verapamil Impurity 52 (CAS CATO-C4X-177852)
- Verapamil Impurity 49 (CAS CATO-C4X-177849)
Recommended Standards
- Buspirone EP Impurity L (CAS 21098-11-3)
- Bis(tert-butylamino)chloro-s-triazine (CAS 39605-42-0)
- Ivabradine Impurity 100 (CAS CATO-C4X-1119100)
- Di-N-butylgermaniumdichloride (CAS 4593-81-1)
- Nifedipine Impurity 35 (CAS CATO-C4X-141035)
- Rivaroxaban Impurity 43 (CAS 1369969-44-7)
- Tiotropium Bromide Impurity 23 (CAS 54725-48-3)
- (E)-1-(2-(4-chlorophenyl)-4-methylthiazol-5-yl)-3-(furan-2-yl)prop-2-en-1-one (CAS 860649-82-7)
- 6-Methylphenanthridin-8-amine (CAS 872828-93-8)
- 2-Cyclohexyl-N-(1,1-dioxido-2,3-dihydrothiophen-3-yl)-N-(4-methoxyphenyl)acetamide (CAS 863022-67-7)
- 10-(4-(Diethylamino)phenyl)-3,4,9,10-tetrahydrobenzo[b]cyclopenta[e][1,4]diazepin-1(2H)-one (CAS 1374509-51-9)
- 2-Methyl-N-(3-(oxiran-2-ylmethyl)oxetan-3-yl)propane-2-sulfonamide (CAS 2817639-09-9)
- N-(2-Methoxybenzyl)-3-pentanamine hydrobromide (CAS 1609407-77-3)
- Acetyl-Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt (CAS 2022956-56-3)
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