Risperidone Impurity 21 CAS 64671-29-0
| CAS No. | 64671-29-0 |
| Molecular Formula | C12H14FNO |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 243.71 g/mol gives Risperidone Impurity 21 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Risperidone Impurity 21 (CAS 64671-29-0) is a certified pharmaceutical impurity reference standard with the molecular formula C12H14FNOHCl and a molecular weight of 243.71 g/mol.
Structurally, Risperidone Impurity 21 (C12H14FNOHCl) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 243.71 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
CATO manufactures Risperidone Impurity 21 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H14FNO HCl |
| Molecular Weight | 243.71 g/mol |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
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
- Irinotecan Impurity 55 (CAS 2252499-29-7)
- Axitinib Impurity 36 (CAS CATO-C4X-107136)
- Dexrazoxane Impurity 44 (CAS 21416-67-1)
- Ethyl (1-(4-ethyl-6-oxo-1,6-dihydropyrimidin-2-yl)-3-methyl-1H-pyrazol-5-yl)carbamate (CAS 1004253-47-7)
- 5-(Butylthio)-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione (CAS 899748-30-2)
- 6-Phenyl-2-((2-(pyrrolidin-1-yl)ethyl)thio)-4-(trifluoromethyl)-5,6,7,8-tetrahydroquinoline-3-carbonitrile (CAS 664994-25-6)
- (5-Ethyl-4-methylthiophen-2-yl)(indolin-1-yl)methanone (CAS 794563-32-9)
- 1-(Tert-butyl) 2-methyl 5-(2-hydroxyethyl)pyrrolidine-1,2-dicarboxylate (CAS 1822341-48-9)
- 2-Bromo-4-(dimethoxymethyl)-1-nitrobenzene (CAS 929095-57-8)
- Lixisenatide (CAS 320367-13-3)
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