发明人林芳,孙丽萍,赵玉洁. "Method for the Synthesis of Calcium 9-ethyl-4,6-dioxo-10-propyl-6,9-dihydro-4H-pyrano[3,2-g]quinoline-2,8-dicarboxylate" [P]. 中国发明专利, 专利号 CN 110296734 B, 授权公告日 2016-12-01.
发明人周伟,冯建国,郭海燕. "A Process for Preparing High-Purity Calcium 9-ethyl-4,6-dioxo-10-propyl-6,9-dihydro-4H-pyrano[3,2-g]quinoline-2,8-dicarboxylate" [P]. 中国发明专利, 专利号 CN 116117829 A, 授权公告日 2016-02-01.
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