≥99% HPLC Purity MS Confirmed Janoshik COA In-House SPPS 8-Region Worldwide Shipping
Compound type: 5α-Reductase Type II Inhibitor — DHT Suppressor CAS Number: 98319-26-7
What is Finasteride?
Finasteride is a competitive inhibitor of 5α-reductase type II (and weakly type I) — the enzyme responsible for converting testosterone to dihydrotestosterone (DHT) in prostate, scalp, skin, and liver. By blocking DHT synthesis, Finasteride reduces intraprostatic and scalp tissue DHT by >70%, with minimal effect on circulating testosterone. FDA-approved for BPH (Proscar 5mg) and androgenic alopecia (Propecia 1mg). Finasteride is a key tool for isolating the contributions of testosterone vs. DHT in androgen research — enabling selective AR studies where DHT’s higher AR affinity (~2-3× vs. testosterone) would confound results.
Research Applications
5α-Reductase Pharmacology
Type II inhibition — testosterone to DHT conversion blockade
BPH Research
Prostate DHT reduction and volume decrease models
Androgenic Alopecia
Scalp tissue DHT reduction for hair follicle research
T vs. DHT Isolation
DHT suppression tool to study testosterone-exclusive AR effects
Androgen Pharmacology
Reference 5α-reductase inhibitor vs. Dutasteride (Type I+II dual inhibitor)
Finasteride is a 5α-reductase type II inhibitor that blocks conversion of testosterone to DHT in prostate, scalp, and skin. FDA-approved for BPH and androgenic alopecia, it reduces intraprostatic and scalp DHT by >70%. In research it is used to isolate testosterone vs. DHT contributions in androgen studies and as a reference 5α-RI vs. Dutasteride.
How are Finasteride tablets supplied?
QSC Finasteride is supplied as pre-dosed oral tablets. No reconstitution required. Store at room temperature away from moisture and heat.
What purity is QSC Finasteride?
QSC Finasteride is ≥99% HPLC pure with MS-confirmed identity on every batch. COA verifiable at verify.janoshik.com.
Research Use Only: All QSC compounds are sold strictly for laboratory research purposes only. Not for human consumption, veterinary use, or any other application. Researchers are responsible for compliance with local regulations.
QSC Network
Compound reference, COA verification, and regional warehouse information across the QSC network.
