A New C21 Steroidal Glycoside from Cynanchum paniculatum Structural Features of a Neutral Heteropolysaccharide CPB-4 from Cynanchum paniculatum Chemical constituents from active fraction in roots and rhizomes of Cynanchum paniculatum with reversal activity of multidrug resistance Observation of above-ground part of Cynanchum paniculatum by scanning electron microscope Analgesic Effect and Gastro-intestinal Motility Inhibitory Action of 3-Hydroxy-4-methoxy-acetophenone from Cynanchum paniculatum (Bunge) Kitagawa Determination of Paeonol in the Root of Cynanchum paniculatum (Bge.) Kitag. by GC