发明人罗永刚,郭海燕,刘建华. "Method for the Synthesis of 5-Nitro-3-(1,4-dioxaspiro[4.5]dec-7-en-8-yl)-1h-indole" [P]. 中国发明专利, 专利号 CN 117939987 A, 授权公告日 2018-10-01.
发明人沈红梅,胡光,周伟. "A Process for Preparing High-Purity 5-Nitro-3-(1,4-dioxaspiro[4.5]dec-7-en-8-yl)-1h-indole" [P]. 中国发明专利, 专利号 CN 112266152 A, 授权公告日 2024-01-11.
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