Description

Finasteride CAS NO 98319-26-7 is a synthetic 4-azasteroid compound that acts as a specific, competitive inhibitor of the Type II 5α-reductase enzyme. This inhibition is critical for preventing the conversion of testosterone to the more potent androgen, dihydrotestosterone (DHT). It is an essential active pharmaceutical ingredient (API) primarily demanded by the global pharmaceutical industry for the formulation of prescription medications targeting androgen-dependent conditions, notably benign prostatic hyperplasia (BPH) and androgenetic alopecia.

Application

• Pharmaceutical API: Primary use as the active ingredient in oral tablet formulations for the treatment of benign prostatic hyperplasia (BPH).
• Hair Loss Treatment: Key component in medications prescribed for male pattern hair loss (androgenetic alopecia).
• Research & Development: Used in biochemical and pharmacological studies related to steroid metabolism, enzyme inhibition, and androgen pathway research.
• Veterinary Medicine: Potential application in veterinary settings for managing prostate conditions in animals.
• Reference Standard: Serves as a high-purity chemical reference standard for quality control and analytical testing in laboratories.
• Custom Synthesis: Intermediate or starting material for the synthesis of related steroidal compounds and novel chemical entities in medicinal chemistry.

Basic Information

Item	Details
Product Name	Finasteride
CAS No.	98319-26-7
Molecular Formula	C23H36N2O2
Molecular Weight	372.55 g/mol
Synonyms	MK-906; Proscar (brand name); Propecia (brand name); N-(1,1-Dimethylethyl)-3-oxo-4-aza-5α-androst-1-ene-17β-carboxamide; 17β-(N-tert-Butylcarbamoyl)-4-aza-5α-androst-1-en-3-one; Finasteridum; Finasterid; 5α-Reductase Inhibitor II
EINECS	Contact for details

Quality Control

Our Finasteride is manufactured under strict quality management systems. It is typically produced to meet or exceed relevant pharmacopoeial standards such as USP (United States Pharmacopeia) and EP (European Pharmacopoeia). Every batch undergoes comprehensive analytical testing including identification, assay, impurity profiling, and residual solvent analysis. A Certificate of Analysis (COA) documenting all test results is provided to ensure full traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time corresponds to reference standard
Assay (HPLC)	98.0% - 102.0% (on anhydrous basis)
Related Substances (HPLC)	Individual impurity: ≤ 0.5% Total impurities: ≤ 2.0%
Water (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm
Residual Solvents (GC)	Complies with ICH Q3C guidelines

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.