发明授权
US4072497A (5-Alkylureido-1,3,4-thiadiazol-2-yl-thio) acetic acid tert-butyl esters and herbicidal compositions and processes 失效
(5-烷基脲基-1,3,4-噻二唑-2-基 - 硫代)乙酸叔丁酯和除草组合物和方法

(5-Alkylureido-1,3,4-thiadiazol-2-yl-thio) acetic acid tert-butyl esters
and herbicidal compositions and processes
摘要:
[5-(1,3-dimethylureido)-1,3,4-thiadiazol-2-ylthio]-acetic acid methylester (b.p. 113.degree. C.), [5-(1,3,3-trimethylureido)-1,3,4-thiadiazol-2-ylthio]-acetic acid ethylester (b.p. 95.degree. C.) and [5-(3-methylureido)-1,3,4-thiadiazol-2-ylthio]-acetic acid isopropylester (b.p. 143.degree. C.) in which R is hydrogen or alkyl. The compounds are useful as the active agents or one of the active agents in herbicidal compositions.
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