Cynanchum otophyllum C. K. Schneid.

Auricledleaf swallowwort root extract is an extract of Cynanchum otophyllum Schneid, which can be used to study Alzheimer's disease.

Caudatin-3-O-β-D-cymaropyranosyl-(1→4)-β-D-digitoxopyranoside is a naturally derived C₂₁ steroidal glycoside that induces cytotoxicity in leukemia cells with a IC₅₀ of 15.7 µM. Caudatin-3-O-β-D-cymaropyranosyl-(1→4)-β-D-digitoxopyranoside can be used in leukemia research.

Caudatin 3-O-β-D-glucopyranosyl-(1→4)-β-D-oleandropyranosyl-(1→4)-β-D-cymaropyranosyl-(1→4)-β-D-cymaropyranoside (compound 6) is a C-21 steroidal glycoside that can be isolated from the roots of Cynanchum otophyllum and Cynanchum caudatum.

Otophylloside C is a C21 steroidal glycoside compound found in the root of Gynostemma pentaphyllum.

Otophylloside P is a pregnane glycosid. Otophylloside P can be isolated from the roots of Cynanchum otophyllum.

Otophylloside Q is a pregnane glycoside (C-21 steroidal glycoside) isolated from the roots of Cynanchum otophyllum. With caudatin (HY-N1983), an anticancer agent, as its aglycone, Otophylloside Q contains a sugar chain composed of cymarose, oleandrose and glucose units.

Qingyangshengenin 3-O-β-D-cymaropyranosyl-(1→4)-β-D-digitoxopyranoside is a natural steroid.

Otophylloside T is a natural product.