发明人何建平,周伟,杨光. "Method for the Synthesis of 2-(2-Bromo-5-chloro-6-(difluoromethyl)pyridin-3-yl)acetonitrile" [P]. 中国发明专利, 专利号 CN 116060439 A, 授权公告日 2019-07-16.
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