PROBLEM TO BE SOLVED: To provide a medical-use antimycotic agent effective even in a small dose.SOLUTION: The medical-use antimycotic agent contains a compound represented by formula (Ia), (Ib), (Ic), or (Id) (wherein R1 and R2 are each a 1-6C alkyl group or the like R3, R4, and R5 are each a hydrogen atom or the like X and Y are each a halogen atom or the like n is 0 to 4 and m is 0 to 6).COPYRIGHT: (C)2008,JPO&INPIT【課題】低用量で有効な医薬用抗真菌剤を提供する。【解決手段】下記一般式:(R1、R2は、C1~C6アルキル基等、R3,R4,R5は、水素原子等、X,Yは、ハロゲン原子等、nは0~4、mは0~6を表す。)で表される化合物を含有する。【選択図】なし