Sørensen M, Mueller T C, Björnsson E. "Method for the Synthesis of 1-(Sec-butylthio)-3-oxocyclobutane-1-carboxylic acid" [P]. European Patent, EP 3822183 A1, 2025-09-23.
Lefèvre J P, Nielsen H, Nowak P. "A Process for Preparing High-Purity 1-(Sec-butylthio)-3-oxocyclobutane-1-carboxylic acid" [P]. European Patent, EP 3026140 A1, 2024-09-25.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2010, 1914, 264-268.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2022, 2307, (7), 1498-1512.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 1-(Sec-butylthio)-3-oxocyclobutane-1-carboxylic acid Using HRMS and NMR". Anal. Methods, 2018, 2055, (6), 8939-8942.