发明授权
US4523942A 4H-3,1-Benzoxazine derivatives, compositions and herbicidal use 失效
4H-3,1-苯并恶嗪衍生物,组合物和除草用途

4H-3,1-Benzoxazine derivatives, compositions and herbicidal use
摘要:
Novel 4H-3,1-benzoxazine derivatives of the formula ##STR1## where R.sup.1, R.sup.2 and Y have the meanings given in the disclosure, a process for their preparation, and their use for combating unwanted plant growth.
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