Urapidil Impurity 85 CAS 144965-19-5 (free base)
| CAS No. | 144965-19-5 (free base) |
| Molecular Formula | C10H16N2O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Urapidil Impurity 85 (CAS 144965-19-5 (free base)), a pharmacopoeial impurity reference standard (molecular formula C10H16N2OHCl, MW 216.71 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Urapidil Impurity 85 is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 216.71 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C10H16N2O HCl |
| Molecular Weight | 216.71 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Urapidil Standards
- Urapidil Impurity 76 HBr (CAS 100939-96-6)
- Urapidil Impurity 61 HCl (CAS 1081534-21-5)
- Urapidil Impurity 9 (CAS 108997-11-1)
- Urapidil Impurity 70 (CAS 112735-05-4)
- Urapidil Impurity 75 (CAS 116315-12-9)
- Urapidil Impurity 69 (CAS 117525-95-8)
- Urapidil Impurity 54 (CAS 13300-33-9)
- Urapidil Impurity 88 (CAS 13379-99-2)
Recommended Standards
- Sitafloxacin Impurity 30 (CAS CATO-C4X-115530)
- Pivmecillinam EP Impurity A (CAS 25031-08-7)
- Salbutamol Impurity 177 (CAS CATO-C4X-1176177)
- (R)-1-tert-Butyl 2-ethyl 5-oxopiperidine-1,2-dicarboxylate (CAS 917344-15-1)
- Rifapentine Impurity 7 (CAS 27557-15-9)
- 1,3-Bis(1H-benzo[d][1,2,3]triazol-1-yl)-2-methylpropane-1,3-dione (CAS 852865-91-9)
- 4-(2-(Methylsulfinyl)phenyl)piperidine (CAS 161609-95-6)
- N,2-dimethyl-6-(trifluoromethyl)nicotinamide (CAS 1090043-67-6)
- 1-Methyl-1H-benzotriazole-5-methanamine (CAS 499770-77-3)
- T-Peptide (CAS 2022956-62-1)
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