发明人孙丽萍,沈红梅,张德明. "Method for the Synthesis of Spiro[3H-indole-3,4-piperidin]-2(1H)-one HCl" [P]. 中国发明专利, 专利号 CN 117273946 A, 授权公告日 2021-08-27.
发明人杨光,高志强,马晓峰. "A Process for Preparing High-Purity Spiro[3H-indole-3,4-piperidin]-2(1H)-one HCl" [P]. 中国发明专利, 专利号 CN 108946058 A, 授权公告日 2025-09-19.
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