发明授权
US4880840A Arylethanolhydroxylamines and their use for promoting yield 失效
氨基乙醇羟胺及其用于促进产量的用途

Arylethanolhydroxylamines and their use for promoting yield
摘要:
##STR1## wherein R
1 -R
8 and n are as defined herein.
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