Analysis of Four Solvatomorphs of Betulin by TG-DTA-EI/PI-MS System Equipped with the Skimmer-Type Interface

Peng-Hui Yuan, Yan-Cai Bi, Bin Su, De-Zhi Yang, Ning-Bo Gong, Li Zhang, Yang Lu, Guan-Hua Du

Natural Products and Bioprospecting . 2020, (3): 141 -152 . DOI: 10.1007/s13659-020-00243-3