Verapamil Impurity 39 CAS 31910-93-7
| CAS No. | 31910-93-7 |
| Molecular Formula | C26H36N2O4 |
| Molecular Weight | 440.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Verapamil Impurity 39 (C26H36N2O4) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 440.58 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Verapamil Impurity 39 (CAS 31910-93-7) is a certified pharmaceutical impurity reference standard with the molecular formula C26H36N2O4 and a molecular weight of 440.58 g/mol.
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 | C26H36N2O4 |
| Molecular Weight | 440.58 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 2 |
Related Verapamil Standards
- (S)-(-)-Verapamil HCl (CAS 36622-29-4)
- Verapamil EP Impurity J (CAS 67018-85-3)
- Verapamil EP Impurity I (CAS 2893-91-6)
- Verapamil Impurity 36 (CAS 77326-93-3)
- Verapamil Impurity 37 (CAS 67018-80-8)
- Verapamil Impurity 38 (CAS 114847-42-6)
- Verapamil Impurity 44 (CAS CATO-C4X-177844)
- Verapamil EP Impurity H (CAS 67018-83-1)
Recommended Standards
- Gadoteridol impurity 36 (CAS CATO-C4X-225736)
- Trifarotene impurity 22 (CAS CATO-C4X-313222)
- 3-Methoxy-7α-methyl-6β-(phenylsulfonyl) Estradiol (CAS 153004-09-2)
- 3-Methoxy-7β-methyl-6β-(phenylsulfonyl) Estradiol (CAS 156137-95-0)
- Atracurium Impurity 28 (CAS 57198-94-4)
- Ticagrelor impurity 99 (CAS CATO-C4X-109399)
- Cariprazine Impurity 49 (CAS CATO-C4X-240849)
- Amiodarone HCl (CAS 19774-82-4)
- Rimegepant Impurity 33 (CAS CATO-C4X-248733)
- Apalutamide Impurity 75 (CAS CATO-C4X-274975)
- 1-Isobutyl-4-nitrosopiperazine (CAS 743372-50-1)
- 3-(((tert-Butyldimethylsilyl)oxy)methyl)bicyclo[1.1.1]pentane-1-carboxylic acid (CAS 2095495-84-2)
- 1-(5-fluoro-3-pyridinyl)-Ethanone (CAS 342602-55-5)
- Semaglutide impurity 47 (CAS CATO-C4X-222647)
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