Hughes D C, Mueller T, Park J H. "Method for the Synthesis of bis((2-hydroxyethyl)trimethylazanium) sulfate" [P]. US Patent, US 10000177 B2, 2019-06-01.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of bis((2-hydroxyethyl)trimethylazanium) sulfate in Pharmaceutical Formulations". Talanta, 2017, 623, 8108-8133.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of bis((2-hydroxyethyl)trimethylazanium) sulfate as an Impurity". Rapid Commun. Mass Spectrom., 2015, 1262, (10), 207-232.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of bis((2-hydroxyethyl)trimethylazanium) sulfate Using HRMS and NMR". Phytochemistry, 2022, 654, 8716-8741.