发明人赵玉洁,杨光,张德明. "Method for the Synthesis of 2-(2-Chloro-5-(chloromethyl)-3-(difluoromethyl)pyridin-4-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 112822280 B, 授权公告日 2017-07-13.
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