Topterone  (Synonyms: Win 17665)

Topterone is a topical antiandrogen.

Androgen^[1]

Topterone, is administered parenterally or topically to rats, rabbits or hamsters to determine its endocrine profile. Systemic administration demonstrates that Topterone is both antiandrogenic and progestational. Topical application fails to elicit a systemic antiandrogenic response at 1 g/kg/day and only a minimal progestational response is seen at 32 mg/kg/day. No other endocrine activities are detected^[1]. Topterone inhibits stimulation of flank organ development of castrated immature male hamsters by both testosterone and dihydrotestosterone, whereas Progesterone inhibits the stimulation by only testosterone. Topical application of Topterone, has been shown to cause a regression in the development of the flank organ^[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

330.50

C₂₂H₃₄O₂

60607-35-4

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Ferrari RA, et al. Endocrine profile of topterone, a topical antiandrogen, in three species of laboratory animals. Methods Find Exp Clin Pharmacol. 1980 Apr;2(2):65-9.  [Content Brief]

  [2]. Chakrabarty K, et al. Mechanism of action of 17 alpha-propyltestosterone in inhibiting hamster flank organ development. J Invest Dermatol. 1980 Jan;74(1):5-8.  [Content Brief]