| 摘要 |
Quinoxaline-di-N-oxides corresponding to the formula <IMAGE> (I) wherein R1 and R2 represent hydrogen, alkyl, phenyl, alkanoyl, benzoyl, alkoxycarbonyl, carbamoyl, cyano, amino or together a polymethylene group, Y represents hydrogen or halogen, X represents oxygen, sulphur, the sulphinyl group or the sulphonyl group, N REPRESENTS 0, 1 OR 2 Z represents hydrogen, alkyl, halogen-alkyl, halogen or alkoxy ARE USEFUL AS SUPPLEMENTARY FEED AGENTS HAVING A GROWTH-PROMOTING ACTION.
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