发明人张德明,郑宇鹏,郭海燕. "Method for the Synthesis of 1H-Pyrazolo[4,3-d]pyrimidine, 5-chloro-3-iodo-1-methyl-" [P]. 中国发明专利, 专利号 CN 108648146 B, 授权公告日 2021-01-27.
发明人郭海燕,罗永刚,刘建华. "A Process for Preparing High-Purity 1H-Pyrazolo[4,3-d]pyrimidine, 5-chloro-3-iodo-1-methyl-" [P]. 中国发明专利, 专利号 CN 113618207 A, 授权公告日 2023-07-03.
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