Dutasteride EP Impurity A CAS 104239-97-6
| CAS No. | 104239-97-6 |
| Molecular Formula | C19H27NO3 |
| Molecular Weight | 317.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Dutasteride EP Impurity A.
CATO supplies Dutasteride EP Impurity A (CAS 104239-97-6), a pharmacopoeial impurity reference standard (molecular formula C19H27NO3, MW 317.42 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Dutasteride EP Impurity A (C19H27NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 317.42 g/mol, it falls into the moderately-high-molecular-weight range. 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 A 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 | C19H27NO3 |
| Molecular Weight | 317.42 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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.) | 1986 |
| Nitrogen Atoms | 1 |
Related Dutasteride Standards
- Dutasteride Impurity 31 (CAS CATO-C4X-110331)
- Dutasteride Impurity 29 (CAS CATO-C4X-110329)
- Dutasteride Impurity 30 (CAS CATO-C4X-110330)
- 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 24 (CAS CATO-C4X-110324)
- Dutasteride EP Impurity B (CAS 2512195-98-9)
Recommended Standards
- Nateglinide EP Impurity B (CAS 105816-05-5)
- 32293-42-8 Benzeneethanamine,4-(phenylmethoxy)-N-(phenylmethyl)- CTK4G8465 (CAS 32293-42-8)
- Nateglinide (CAS 105816-04-4)
- Tetrabenazine Related Compound C (CAS 86457-13-8)
- Nafamostat Impurity 55 (CAS CATO-C4X-133255)
- Estradiol Impurity 21 (CAS 1187829-63-5)
- N-Nitroso Isoprenaline Impurity 34 (CAS CATO-C4X-277534)
- 1-(3,5-Dimethylphenyl)-3-methylbutan-1-one (CAS 1182983-98-7)
- 3-[(3S)-1-[2-(2-Methylphenyl)-2-oxoethyl]-2-oxo-5-phenyl-2,3-dihydro-1H-1,4-benzodiazepin-3-yl]-1-(4-nitrophenyl)urea (CAS 1796905-01-5)
- 1499179-24-6 (2Z)-3-(6-Methylpyridin-2-yl)acrylic acid MFCD13976406 (CAS 1499179-24-6)
- Butyl 4-[(chloroacetyl)amino]benzoate (CAS 106214-24-8)
- Methyl 2-(methanesulfonyloxy)acetate (CAS 23550-26-7)
- Ethyl 6-bromo-2-cyano-3-nitrobenzoate (CAS 1805190-97-9)
- Semaglutide impurity 106 (CAS CATO-C4X-2226106)
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