发明授权
US4277494A Novel esters 失效
新型酯类

Novel esters
摘要:
Acetates of the formula ##STR1## wherein X.sub.1 represents hydrogen, halogen or C.sub.1 -C.sub.4 alkyl, X.sub.2 represents hydrogen or halogen, and Y represents hydrogen, halogen or methyl, processes for their manufacture and a method of controlling pests which comprises the use of these compounds.
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