Determination of 4-Hydroxyacetophenone and 2,4-Dihydroxyacetophenone in Cynanchum atratum Bge. by HPLC
WANG Yuan-Shu, ZHAO Xin-Chao, BAI Hong, LIU Yong-Jun, LIU Ai-Qin
NATURAL PRODUCT RESEARCH AND DEVELOPMENT . 2010, (6): 1073 -1076 .