An antimicrobial agent for animals is disclosed. The agent comprises as an effective component a racemate or a 3S-type compoundof of a pyrido[1,2,3-de] [1,4]benzoxazine derivative represented by the formula (I):
wherein R is a C₁₋₆ alkyl group, provided that R cannot be a methyl group when the pyrido[1,2,3-de] [1,4]benzoxazine derivative is a racemate, or a salt or a hydrate thereof. The compound gives a low toxic, safe antimicrobial agent for animals, has a broader antimicrobial spectrum, and is effective against various infectious diseases of animals.
本发明公开了一种动物用抗菌剂。该制剂的有效成分包括由式(I)代表的
吡啶并[1,2,3-de] [1,4]苯并恶嗪衍
生物的外消旋物或 3S 型化合物:
其中 R 是 C₁₋₆烷基,但当
吡啶并[1,2,3-de] [1,4]苯并恶嗪衍
生物是外消旋物时,R 不能是甲基,或其盐或
水合物。该化合物是一种低毒、安全的动物抗菌剂,具有更广的抗菌谱,对动物的各种传染病有效。