PYRIDAZINO[4,5-B]QUINOXALINE-5,10-DIOXIDE- DERIVATIVES AND PROCESS FOR PREPARING THEREOF

摘要

The invention relates to fodder concentrates, fodder additives and fodders having antimicrobial and/or weight-gain increasing effects which comprise as active ingredient a new compound of the general formula /I/ /I/ wherein R represents a C1-20 alkyl, a C1-6 alkoxy group, an optionally substituted C6-10 aryl group, a phenyl/C1-3 alkyl/. a C3-7 cycloalkyl or a 5 or 6 membered heterocyclic group containing one or two nitrogen and/or oxygen and/or sulfur atom/s/, or a biologically acceptable acid addition salt of a basic compound of the general formula /I/ together with a suitable inert, solid or liquid carrier or diluent. The invention relates also to the preparation of the new compounds of the general formula /I/.