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US4526609A Phenoxy phenoxy propionic hydrazides 失效
苯氧基丙酸酰肼

Phenoxy phenoxy propionic hydrazides
摘要:
Propionic acid amides of the formula ##STR1## wherein R, R.sub.1 and R.sub.2 are as defined hereinafter, processes for their preparation, herbicidal compositions containing these amides and methods of use of the herbicidal compositions are disclosed.
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