Risperidone Impurity 37 CAS CATO-C4X-111137
| CAS No. | CATO-C4X-111137 |
| Molecular Formula | C25H27FN4O4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Risperidone Impurity 37 (CAS CATO-C4X-111137) is a certified pharmaceutical impurity reference standard with the molecular formula C25H27FN4O4C2HF3O2 and a molecular weight of 580.53 g/mol.
Based on its molecular formula C25H27FN4O4C2HF3O2, Risperidone Impurity 37 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 580.53 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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 | C25H27FN4O4 C2HF3O2 |
| Molecular Weight | 580.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Risperidone Standards
- Risperidone Impurity 27 (CAS 1005191-81-0)
- Risperidone-d4 (CAS 1020719-76-9)
- Risperidone (CAS 106266-06-2)
- Methyl Risperidone (CAS 106266-08-4)
- Risperidone EP Impurity K (CAS 106266-09-5)
- Risperidone impurity 46 (CAS 106266-11-9)
- Risperidone Impurity 32 (CAS 108855-18-1)
- Risperidone Impurity 20 (CAS 1172297-96-9)
Recommended Standards
- Bexarotene Impurity 3 (CAS 2825537-35-5)
- Gadobutrol Impurity 12 4HCl (CAS 10045-25-7)
- Benzbromarone Impurity 9 (CAS 3131-63-3)
- Phenylmercuric Octanoate (CAS 13864-38-5)
- 4-(p-Tolyl)phthalazin-1(2H)-one (CAS 51334-85-1)
- (E)-3-(3,4,5-Trihydroxyphenyl)acrylic acid (CAS 709007-50-1)
- 7-Bromo-4,4-difluorochroman (CAS 1783557-72-1)
- 2-Hydroxy-5-nitrocinnamic acid, 97% (CAS 50396-49-1)
- 6-Amino-4H-chromen-4-one (CAS 98589-40-3)
- Antifreeze Polypeptide 6 (winter flounder) trifluoroacetate salt (CAS 122604-16-4)
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