5H-1,3,4-thiadiazolo(3,2-A)pyrimidin-5-one derivatives and functional compositions containing the same
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United States of America Patent
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Nov 20, 1990
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app pub date -
Aug 28, 1989
filing date -
Mar 19, 1986
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Abstract
A class of novel 5H-1,3,4-thiadiazolo[3,2-a]-pyrimidin-5-one derivatives are disclosed. These compounds exhibit remarkable fungicidal activities for pathogenic fungi of cucumber gray mold, cucumber downy mildew. Alternaria sooty spot of Chinese mustard, apple Alternaria leaf spot, pear black spot, rice blast, tomato late blight, etc.
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