Mueller T, Klinger H, Kumar R. "Method for the Synthesis of Ethyl (1R,2S)-2'-oxospiro[cyclopropane-1,3'-indoline]-2-carboxylate" [P]. US Patent, US 9630410 B2, 2024-02-26.
发明人李文辉,朱建伟,胡光. "A Process for Preparing High-Purity Ethyl (1R,2S)-2'-oxospiro[cyclopropane-1,3'-indoline]-2-carboxylate" [P]. 中国发明专利, 专利号 CN 111558215 B, 授权公告日 2021-01-19.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2013, 1947, (7), 7319-7334.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2016, 831, (6), 2584-2612.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl (1R,2S)-2'-oxospiro[cyclopropane-1,3'-indoline]-2-carboxylate Using HRMS and NMR". Anal. Chim. Acta, 2020, 1412, (9), 5085-5098.