Sankyo Company, Limited

Isao Seki

Noritoshi Kitano

Fusao Kondo

Use of dithiocarbamic acid derivatives having the structure ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 are various organic radicals as preventive and curative agents against mycoplasmosis. These derivatives are prepared from the starting materials having the structure ##STR2## by reaction with carbon disulfide or from the starting materials having the structure ##STR3## BY REACTION WITH R.sub.3 -halide.

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Tokyo, Japan

Isao Seki