Finasteride Impurity 20 CAS 73671-92-8
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 73671-92-8 |
| Molecular Formula | C20H31NO3 |
| Molecular Weight | 333.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Finasteride Impurity 20 (CAS 73671-92-8) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C20H31NO3. Molecular weight: 333.47 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C20H31NO3 |
| Molecular Weight | 333.47 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 1 |
Related Finasteride Standards
- Finasteride Impurity 54 (CAS 1385262-95-2)
- Finasteride Impurity N35 (CAS 7254-03-7)
- Finasteride Impurity 3-one-4-aza-5-androstene-17β-carboxylate methyl ester (CAS 104214-18-8)
- Finasteride EP Impurity B (CAS 103335-41-7)
- Finasteride Impurity 40 (CAS CATO-C4X-164540)
- Finasteride Impurity 35 (CAS CATO-C4X-164535)
- Finasteride Impurity N50 (CAS 10325-79-8)
- Finasteride Impurity 32 (CAS 51872-67-4)
Recommended Standards
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- Tert-butyl 5,5-difluoro-7-oxa-2-azaspiro[3.5]Nonane-2-carboxylate (CAS 2306263-90-9)
- 2,2-Dimethyl-2,3-dihydrobenzo[d]thiazole (CAS 25111-89-1)
- 5-Hydroxy-4-(3-(pyrrolidin-1-ylmethyl)phenyl)isoquinolin-1(2H)-one (CAS 651029-63-9)
- Mitogenic Pentapeptide (CAS 87173-03-3)
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