发明人林芳,罗永刚,赵玉洁. "Method for the Synthesis of 1,3-Diethyl 2-{[(4-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]oxy}phenyl)amino]methylidene}propanedioate" [P]. 中国发明专利, 专利号 CN 117469436 A, 授权公告日 2022-04-04.
发明人张德明,杨光,唐晓军. "A Process for Preparing High-Purity 1,3-Diethyl 2-{[(4-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]oxy}phenyl)amino]methylidene}propanedioate" [P]. 中国发明专利, 专利号 CN 115941170 A, 授权公告日 2022-03-21.
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