发明人黄志刚,何建平,唐晓军. "Method for the Synthesis of 4-(3-Nitrophenyl)-2-formyl-6-methyl-1,4-dihydropyridine-3,5-dicarboxylic Acid 5-Isopropyl Ester 3-Methyl Ester" [P]. 中国发明专利, 专利号 CN 116026049 B, 授权公告日 2023-11-23.
发明人李文辉,罗永刚,郑宇鹏. "A Process for Preparing High-Purity 4-(3-Nitrophenyl)-2-formyl-6-methyl-1,4-dihydropyridine-3,5-dicarboxylic Acid 5-Isopropyl Ester 3-Methyl Ester" [P]. 中国发明专利, 专利号 CN 108454694 A, 授权公告日 2021-11-06.
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