Schröder R, Jørgensen K, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3404474 A1, 2025-10-20.
发明人张德明,罗永刚,钱学锋. "Method for the Synthesis of (4r)-7,8-Dimethyl-3,4-dihydro-2h-1-benzopyran-4-amine hydrochloride" [P]. 中国发明专利, 专利号 CN 114127790 A, 授权公告日 2024-08-17.
发明人高志强,王建平,赵玉洁. "A Process for Preparing High-Purity (4r)-7,8-Dimethyl-3,4-dihydro-2h-1-benzopyran-4-amine hydrochloride" [P]. 中国发明专利, 专利号 CN 110446728 B, 授权公告日 2023-01-08.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2010, 1704, (4), 7958-7978.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2010, 886, (9), 6474-6483.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of (4r)-7,8-Dimethyl-3,4-dihydro-2h-1-benzopyran-4-amine hydrochloride Using HRMS and NMR". Anal. Chem., 2023, 1050, (12), 5179-5204.