Abstract
In vitro growth-inhibitory effect was examined with 56 kinds of azophenol series compounds, having 4-phenylazophenol as the fundamental skeleton and halogen or various other substituents introduced into its benzene ring, and three kinds of other azo compounds, using trichomycin, 10-hydroxy-11-hydroxymercuriundecanoic acid, and phenol as the controls, with Trichophyton asteroides, T. interdigitale, T. schoen-leinii, Microsporum gypseum, Epidermophyton floccosum, and Candida albicans as the test fungi. It was found that 4-(4-nitrophenylazo)-2-chlorophenol was able to inhibit the growth of test fungi in high dilutions of 1:1, 280, 000 to 1:2, 560, 000.