Chemical constituents from whole herb of Hedyotis scandens Chemical constituents from whole herb of Hedyotis scandens Influence of betulinic acid on proliferation, migration, cell cycle and apoptosis of pancreatic cancer cells Determination of 23-hydroxylbetulinic acid in 23-Hydroxylbetulinic Acid Injection by HPLC Simultaneous quantification of nine constituents in Ziziphi Spinosae Semenby HPLC-MS Chemical constituents from Paliurus ramosissimus Advances in studies on three pentacyclic triterpenoids and their derivatives against ADIS Orthogonal test for optimizing extraction technique of betulinic acid in Semen Ziziphi Spinosae Chemical constituents from Mentha haplocalyx Chemical constituents from seed cake of Paeonia ostii Isolation and Identification of Triterpenoid Compounds in Fruits of Chaenomeles lagenaria (Loisel.)Koidz. Studies on chemical constituents of hairy root of Cassia tora Research on HBV DNA inhibition of plasmid acute infection mouse with betulinic acid Studies on Chemical Constituents in Fruit of Eucalyptus globulus Effect of betulinic acid on proliferation,apoptosis,and cell cycle of human lymphoma cell line Raji Contents of Betulin and Betulinic Acid of Betula platyphylla in Huanglong Mountain Studies on the Constituents from the Stems of Spatholobus suberectus Studies on the Chemical Constituents of Bretschneidera sinensis Hemsl. EndEmic in China Studies on the Constituents of Chinese Traditional Drug Suan Zau Ren Chemical constituents from leaves of Cajanus cajan Study on preparation and in vitro transdermal penetration of betulinic acid ethosomes modified by sodium deoxycholate Research progress on pharmacological activities of betulinic acid Chemical constituents from leaves of Acanthopanax evodiaefolius A new nortriterpenoid from Sambucus williamsii Comparison on quality of wild Ziziphi Spinosae Semen between marketed and produced in Tianjin RP-HPLC determination of betulinic acid in Callicarpa macrophylla