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发明人林芳,朱建伟,胡光. "Method for the Synthesis of Ethyl6,6-difluoro-7-oxo-4,5-dihydro-1h-indole-2-carboxylate" [P]. 中国发明专利, 专利号 CN 115542394 B, 授权公告日 2022-08-04.
发明人张德明,高志强,马晓峰. "A Process for Preparing High-Purity Ethyl6,6-difluoro-7-oxo-4,5-dihydro-1h-indole-2-carboxylate" [P]. 中国发明专利, 专利号 CN 115235282 B, 授权公告日 2022-04-05.
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