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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Finasteride, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Finasteride impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
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Finasteride Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Finasteride Carboxylic Acid-D6 Stable Isotopes CS-P-04574 116285-37-1 (unlabeled) Enquire
Finasteride-d2 Stable Isotopes CS-O-59008 1131342-82-9 Enquire
Finasteride-d9 Stable Isotopes CS-O-06622 1131342-85-2 In Stock
N-Des(1,1-dimethylethyl) N-Cyclohexyl Finasteride-d11 Stable Isotopes CS-T-99631 Not Available Enquire
Rel-Finasteride-d9 Stable Isotopes CS-EL-00051 1217547-06-2 Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Finasteride API CS-O-00611 98319-26-7 In Stock


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-hydroxy Dihydro Finasteride carboxylic acid Metabolite CS-O-44051 Not Available Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(17β)-N-(1,1-Dimethylethyl)-3-oxoandrost-4-ene-17-carboxamid... Impurity CS-T-102343 131267-80-6 Enquire
3-Oxo-4-aza-5-α-androstane-17-β-carboxylic acid Impurity CS-O-31522 103335-55-3 In Stock
5,6-Dehydro Finasteride Impurity CS-TB-13345 1800205-94-0 In Stock
5-β-Finasteride Impurity CS-T-54715 140375-22-0 In Stock
Finasteride EP Impurity B Impurity CS-P-00429 103335-41-7 In Stock
Finasteride Related Compound C Impurity CS-P-07898 133216-45-2 In Stock
Hydroxy Finasteride carboxylic acid impurity Impurity CS-O-55140 ---- Enquire
(3S,3aS,5aS,6R,9aS,9bS)-Dodecahydro-3-(methoxycarbonyl)-3a,6... Impurity CS-O-37241 92472-33-8 Enquire
3-Oxo-4-aza-androst-1,5-diene-17-carboxylic Acid Impurity CS-T-60000 1180488-92-9 Enquire
5,6,7,8,9-Dehydro-10-desmethyl Finasteride Impurity CS-T-73724 1346602-40-1 Enquire
5,6-Dehydro-1,2-dihydro Finasteride Des-N-t-butylformamide C... Impurity CS-T-73416 104214-18-8 Enquire
Des[[N-(1,1-Dimethylethyl)amino]carbonyl] 17-(Propionyl) Fin... Impurity CS-T-74048 1346604-11-2 Enquire
Finasteride 17-Alpha isomer Impurity CS-O-42158 140375-21-9 Enquire
Finasteride Dehydro Carboxylic Acid Methyl Ester Impurity CS-T-60003 166896-62-4 Enquire
Finasteride Impurity 2 Impurity CS-P-08144 Not Available Enquire
Finasteride Impurity C Impurity CS-P-07897 1329611-51-9 Enquire
N-Destert butyl Finasteride Impurity CS-P-07688 104214-61-1 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3-Oxo-4-Androsten-17-Beta-Carboxylic Acid Intermediate CS-O-31524 302-97-6 In Stock
Finasteride Impurity A Intermediate CS-O-05487 98319-24-5 In Stock
Methyl 3-Oxo-4-Androsten-17-Beta-Carboxylate Intermediate CS-O-31523 2681-55-2 In Stock


Glucuronide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Finasteride 2-(2-Methylpropanol)amide ß-D-Glucuronide Glucuronide CS-T-76165 1196787-38-8 Enquire
Finasteride Carboxylic Acid Acyl-ß-D-glucuronide Glucuronide CS-T-76892 1196787-40-2 Enquire


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Finasteride for peak identification (Y0001604) EP Standards CS-EG-00790 Not Available Enquire