Fischer A B, Roberts E F, Patel M V. "Method for the Synthesis of 6,6'-((1E,1'E)-hydrazine-1,2-diylidenebis(methanylylidene))bis(2-methoxyphenol)" [P]. US Patent, US 9140275 B2, 2023-08-03.
Schröder R, Roberts E F, Klinger H. "A Process for Preparing High-Purity 6,6'-((1E,1'E)-hydrazine-1,2-diylidenebis(methanylylidene))bis(2-methoxyphenol)" [P]. US Patent, US 11144675 B2, 2020-04-03.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2014, 2280, (1), 2831-2844.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2020, 1667, (6), 7325-7335.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 6,6'-((1E,1'E)-hydrazine-1,2-diylidenebis(methanylylidene))bis(2-methoxyphenol) Using HRMS and NMR". J. Chromatogr. A, 2022, 175, (6), 2784-2808.