发明人黄志刚,林芳,钱学锋. "Method for the Synthesis of Nicardipine Impurity 49" [P]. 中国发明专利, 专利号 CN 109324602 B, 授权公告日 2017-06-09.
发明人张德明,钱学锋,郭海燕. "A Process for Preparing High-Purity Nicardipine Impurity 49" [P]. 中国发明专利, 专利号 CN 109442857 B, 授权公告日 2024-09-24.
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