Dutasteride EP Impurity C CAS 157307-36-3
| CAS No. | 157307-36-3 |
| Molecular Formula | C21H31NO3 |
| Molecular Weight | 345.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Dutasteride EP Impurity C (CAS 157307-36-3, C21H31NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Dutasteride EP Impurity C (C21H31NO3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
CATO manufactures Dutasteride EP Impurity C 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 | C21H31NO3 |
| Molecular Weight | 345.48 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Nitrogen Atoms | 1 |
Related Dutasteride Standards
- Dutasteride EP Impurity B (CAS 2512195-98-9)
- Dutasteride Impurity 24 (CAS CATO-C4X-110324)
- Dutasteride impurity A(C4X-16451) (CAS 103335-55-3)
- Dutasteride Impurity 16 (CAS 1430804-94-6)
- Dutasteride Impurity 28 (CAS CATO-C4X-110328)
- Dutasteride Impurity 29 (CAS CATO-C4X-110329)
- Dutasteride Impurity 30 (CAS CATO-C4X-110330)
- Dutasteride EP Impurity A (CAS 104239-97-6)
Recommended Standards
- CAS 310452-35-8 (CAS 310452-35-8)
- Cetilistat Impurity 2 (CAS CATO-C4X-11702)
- 1,5-Di-Boc-1,5,10-triazadecane 85503-20-4 N1,N4-Bis-Boc-spermidine N1,N4Di-Boc-1,8-diamino-4-azaoctane {3-[(4-Aminobutyl)-tert-butoxycarbonylamino]propyl}carbamic acid tert-butyl ester (CAS 85503-20-4)
- Nateglinide EP Impurity G (CAS 187728-85-4)
- Alprazolam EP Impurity B (CAS 38150-27-5)
- Cefoxitin EP Impurity G (Cefoxitin Dimer) (CAS CATO-C4X-157819)
- Atomoxetine Hydrochloride EP Impurity B (CAS 82857-39-4)
- (E)-3-(hydroxymethyl)-2-(3-hydroxyprop-1-en-1-yl)-5-methoxy-1-methyl-1H-indole-4,7-dione (CAS 114560-25-7)
- tert-Butyl 4-((tert-butyldiphenylsilyl)oxy)cyclohexanecarboxylate (CAS 1010086-31-3)
- 1-(Biphenyl-4-yl)-3-(4-tert-butylbenzyl)thiourea (CAS 330591-83-8)
- 7-Chloro-9-methoxy-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepine (CAS 1708370-83-5)
- Brivaracetam Impurity 11 (CAS CATO-C4X-200711)
- 4-Fluoro-4'-vinyl-1,1'-biphenyl (CAS 716-89-2)
- Tirzepatide Impurity 18 (CAS CATO-C4X-324018)
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