Revefenacin impurity 95 CAS CATO-C4X-203195
| CAS No. | CATO-C4X-203195 |
| Molecular Formula | C19H19Cl2NO3 |
| Molecular Weight | 380.27 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 Revefenacin impurity 95 (CAS CATO-C4X-203195), a pharmacopoeial impurity reference standard (molecular formula C19H19Cl2NO3, MW 380.27 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Revefenacin impurity 95 (C19H19Cl2NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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 380.27 g/mol, it falls into the moderately-high-molecular-weight range. 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 | C19H19Cl2NO3 |
| Molecular Weight | 380.27 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, keep sealed and dry |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Revefenacin Standards
- Revefenacin Impurity 63 (CAS CATO-C4X-203163)
- Revefenacin Impurity 55 (CAS CATO-C4X-203155)
- Revefenacin Impurity N1 (CAS 171723-80-1)
- Revefenacin Impurity 40 (CAS CATO-C4X-203140)
- Revefenacin Impurity 67 (CAS CATO-C4X-203167)
- Revefenacin Impurity N2 (CAS 115293-14-6)
- Revefenacin impurity 80 (CAS CATO-C4X-203180)
- Revefenacin Impurity 60 (CAS CATO-C4X-203160)
Recommended Standards
- N-(4,5-Dichlorobenzo[d]thiazol-2-yl)benzo[d]thiazole-2-carboxamide (CAS 905678-77-5)
- Baricitinib Impurity 36 (CAS 1919837-50-5)
- Methyl 4-oxo-3-(2,2,2-trifluoroethyl)-3,4-dihydro-[1,3]dioxolo[4',5':4,5]benzo[1,2-c][2,7]naphthyridine-5-carboxylate (CAS 866050-65-9)
- tert-Butyl 5-bromo-3-oxo-2,3-dihydrospiro[indene-1,4'-piperidine]-1'-carboxylate (CAS 1160247-30-2)
- Ezetimibe Impurity N13 (CAS 1185883-40-2)
- Flurbiprofen EP Impurity E (CAS 137045-30-8)
- Celecoxib Impurity 54 (CAS 948293-46-7)
- Pyrrolidine-2-carboximidamide (CAS 1310457-96-5)
- 2-Methyl-2,7-diazaspiro[3.5]nonane (CAS 933689-90-8)
- 4-(1,3-Thiazol-2-yl)butan-2-one (CAS 933740-86-4)
- 3-Amino-N-(2-chlorophenyl)benzamide (CAS 115175-20-7)
- 5-Bromo-2,4,6-trimethylpyridin-3-amine (CAS 29976-23-6)
- Benzyl 4-(2-aminoethyl)-3-methylpiperazine-1-carboxylate (CAS 1353982-60-1)
- [Nva12]-Tirzepatide (CAS CATO-C4X-324042)
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