Hughes D C, Anderson J P, Stevens L M. "Method for the Synthesis of Pulvic anhydride" [P]. US Patent, US 11203984 B2, 2020-02-22.
Schröder R, Johansson L, Sørensen M. "A Process for Preparing High-Purity Pulvic anhydride" [P]. European Patent, EP 3334800 A1, 2020-05-05.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2013, 952, (11), 3776-3802.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2019, 961, (3), 7049-7053.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of Pulvic anhydride Using HRMS and NMR". Food Chem., 2013, 1056, 3385-3404.