The invention relates to new carbazic acid derivatives, a process for the preparation thereof and compositions--particularly feed additives and animal feeds--containing the same. The new compounds according to the invention correspond to the formula (I) R.sup.1 .dbd.N--NH--COOR.sup.3 (I) wherein R.sup.1 stands for a C.sub.7-12 cycloalkylidene group, an indanylidene group or a group of the formula (IX) ##STR1## wherein A represents a phenyl group optionally carrying one or more identical or different substituents selected from the group consisting of halo nitro, hydroxy, C.sub.1-14 alkoxy, C.sub.1-4 alkyl, amino or C.sub.1-4 alkoxycarbonylhydrazino; phenyl-(C.sub.1-4 alkyl), C.sub.1-16 alkyl, C.sub.3-7 cycloalkyl or indolyl or a C.sub.3 -C.sub.6 cycloalkyl group substituted by a C.sub.3 -C.sub.6 cycloalkyl group; R.sup.2 denotes a hydrogen atom, a C.sub.1-16 alkyl or a C.sub.3-7 cycloalkyl group; and R.sup.3 represents a C.sub.1-4 alkyl group.
本发明涉及新的卡巴酸衍
生物、其制备方法以及含有它们的组合物,特别是饲料添加剂和动物饲料。根据本发明,新的化合物对应于式(I) R.sup.1.dbd.N--NH--COOR.sup.3 (I),其中R.sup.1代表C.sub.7-12环烷基亚甲基、
茚基亚甲基或式(IX)的基团##STR1##其中A代表苯基,可选地携带一个或多个相同或不同的取代基,所述取代基从卤硝基、羟基、C.sub.1-14烷氧基、C.sub.1-4烷基、
氨基或C.sub.1-4烷氧羰基
肼基中选择;苯基-(C.sub.1-4烷基)、C.sub.1-16烷基、C.sub.3-7环烷基或
吲哚基或被C.sub.3-C.sub.6环烷基取代的C.sub.3-C.sub.6环烷基;R.sup.2表示氢原子、C.sub.1-16烷基或C.sub.3-7环烷基;R.sup.3表示C.sub.1-4烷基基团。