发明授权
US5420307A 2-amino-4-oxo-4H-benzopyrans, their preparataion and their use as antidotes 失效
2-氨基-4-氧代-4H-苯并吡喃,它们的制备及其用作解毒剂

2-amino-4-oxo-4H-benzopyrans, their preparataion and their use as
antidotes
摘要:
2-Amino-4-oxo-4H-benzopyrans I ##STR1## (m=0, 1 or 2; R.sup.1 -R.sup.4 have the meanings stated in the description) and the salts of I, and herbicides which contain 2-(4-hetaryloxy)- and 2-(4-aryloxy)-phenoxyacetic acid derivatives and/or cyclohexenone derivatives as herbicidal active ingredients and 2-amino-4-oxo-4H-benzopyrans I' as antidotes.
公开/授权文献
信息查询
0/0