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Title: Talarozole  
Author: World Heritage Encyclopedia
Language: English
Subject: Cyanoketone, Rogletimide, Atamestane, Nimorazole, Epitiostanol
Publisher: World Heritage Encyclopedia


Systematic (IUPAC) name
Clinical data
Legal status
Routes oral, topical
CAS number  YesY
ATC code None
ChemSpider  N
Chemical data
Formula C21H23N5S 
Mol. mass 377.505 g/mol

Talarozole (formerly R115866, planned trade name Rambazole) is an investigational drug for the treatment of acne, psoriasis and other keratinization disorders.

Talarozole inhibits the metabolism of retinoic acid by blocking the cytochrome P450 enzyme isoform CYP26, a retinoic acid hydroxylase. Because of this mechanism, it is called a retinoic acid metabolism blocking agent (RAMBA).[1]


  1. ^ Giltaire, S; Herphelin F; Frankart A; Hérin M; Stoppie P; Poumay Y (11 December 2008). "The CYP26 inhibitor R115866 potentiates the effects of all-trans retinoic acid on cultured human epidermal keratinocytes". Br J Dermatol 160 (3): 505–13.  

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