O'Brien P Q, Park J H, Klinger H. "Method for the Synthesis of (S)-FTY720-phosphonate" [P]. US Patent, US 10400773 B2, 2023-11-21.
Kumar R, Schröder R, Johnson M A. "A Process for Preparing High-Purity (S)-FTY720-phosphonate" [P]. US Patent, US 10629303 B2, 2021-01-11.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2016, 1013, 8283-8297.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2022, 774, (1), 715-726.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of (S)-FTY720-phosphonate Using HRMS and NMR". Anal. Methods, 2012, 2158, 7147-7155.