Search products

Search by product name, CAT, CAS, molecular formula or chemical name.

Trusted Partner for Reference Standards and Beyond
Products About us Facility Quality system OUR DIVISIONS SimSon Chemtech Speciality & fine chemicals SimSon Chemie Research chemicals supply SimSon Lifescience Services CRO, CDMO & analytical testing Contact us Careers

Finasteride Related Compounds & Impurities

Finasteride is a selective type II 5-alpha-reductase inhibitor used for benign prostatic hyperplasia and androgenetic alopecia.

Simson Pharma Limited along with its subsidiary offices Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) is a trusted manufacturer and supplier of high-quality pharmaceutical reference standards, offering a comprehensive portfolio of Finasteride reference standards, pharmacopeial and non-pharmacopeial Finasteride impurities, related compounds, related substances, metabolites, stable isotope-labelled compounds, deuterium labelled compounds and nitrosamine (N-NO) reference standards.

These materials support pharmaceutical research and development, product development, ANDA and DMF submissions, quality control (QC), analytical method development and validation, stability studies, impurity identification, and genotoxic impurity assessment.

Our Finasteride-related reference standards are thoroughly characterized using advanced analytical techniques and are supplied with comprehensive Certificates of Analysis (COA) and supporting analytical data from our USFDA certified, ISO 17025 and ISO 17034 accredited Lab, to meet global regulatory expectations. EP and USP traceable reference standards can also be provided upon request, subject to availability. Simson is also a provider of EP and USP traceable standards. To ensure consistent quality and reliability, our reference standards are periodically re-tested according to established quality management procedures.

Impurity Standards

5-beta-Dihydro Finasteride

CAT. No.F030017 CAS No.172922-52-0 Mol. F.C23H38N2O2 Mol. W.374.56 g/mol Stock Status Custom Synthesis
COA MSDS

5beta-Finasteride

CAT. No.F030005 CAS No.140375-22-0 Mol. F.C23H36N2O2 Mol. W.372.54 g/mol Stock Status Custom Synthesis
COA MSDS

Finasteride EP Impurity A

CAT. No.F030001 CAS No.98319-24-5 Mol. F.C23H38N2O2 Mol. W.374.56 g/mol Stock Status Instock
COA MSDS

Finasteride EP Impurity B

CAT. No.F030007 CAS No.103335-41-7 Mol. F.C20H29NO3 Mol. W.331.45 g/mol Stock Status Instock
COA MSDS

Finasteride EP Impurity C

CAT. No.F030003 CAS No.1800205-94-0 Mol. F.C23H34N2O2 Mol. W.370.53 g/mol Stock Status Instock
COA MSDS

Finasteride Impurity 1

CAT. No.F030016 CAS No.92472-33-8 Mol. F.C20H30O5 Mol. W.350.45 g/mol Stock Status Custom Synthesis
COA MSDS

Finasteride Impurity 2

CAT. No.F030018 CAS No.140375-21-9 Mol. F.C23H38N2O2 Mol. W.374.56 g/mol Stock Status Custom Synthesis
COA MSDS

Finasteride Impurity 25

CAT. No.F030024 CAS No.190006-01-0 Mol. F.C23H37NO4 Mol. W.391.54 g/mol Stock Status Custom Synthesis
COA MSDS

Finasteride Impurity 3

CAT. No.F030026 CAS No.10325-79-8 Mol. F.C20H30O3 Mol. W.318.50 g/mol Stock Status Custom Synthesis
COA MSDS

Finasteride Impurity 4

CAT. No.F030027 CAS No.NA Mol. F.C21H32O3 Mol. W.332.48 g/mol Stock Status Custom Synthesis
COA MSDS

Finasteride Impurity F

CAT. No.F030015 CAS No.104214-18-8 Mol. F.C20H29NO3 Mol. W.331.45 g/mol Stock Status Custom Synthesis
COA MSDS

Working Standards

Finasteride

CAT. No.F030000 CAS No.98319-26-7 Mol. F.C23H36N2O2 Mol. W.372.54 g/mol Stock Status Instock
COA MSDS

Isotope Labelled Compounds

Finasteride-D9

CAT. No.F030006 CAS No.1131342-85-2 Mol. F.C23H27D9N2O2 Mol. W.381.60 g/mol Stock Status Instock
COA MSDS

Product structure

Sample structure

Catalogue no.: — CAS no.: — Formula: — Mol. weight: —

Illustrative sample structure
SimSon — Science Standards Solutions
D-U-N-S Registered — Dun & Bradstreet D-U-N-S® REGISTERED Verified by Dun & Bradstreet
OFFICES & LABORATORIES
REGISTERED OFFICE · MUMBAI B-307, Sarita Building, Prabhat Industrial Estate, Near Dahisar Toll Naka, Dahisar (East), Mumbai- 400068, Maharashtra, India
CORPORATE OFFICE · MUMBAI Unit 1001-1006, The Platina, Tanvi Complex, S. V. Road, Dahisar East, Mumbai 400068, India
LABORATORY · HYDERABAD Shed 6A, TYPE III, TSIIC, Prashanthi Nagar, Kukatpally, Hyderabad 500072, India
REGIONAL OFFICE · AHMEDABAD Survey Number 375 Paiki 1, Plot Number 11, Shivam 5, Near Sumip Composite, Panchratna Estate, Village Changodar, Taluka Sanand, District Ahmedabad, Gujarat-382213
TALK TO THE RIGHT DESK
© 2026 SimSon Pharma Limited · All rights reserved