Roquefortine E
Ristocetin A sulfate
Ristocetin, Ristomycin III, Spontin, Riston
Radicicol
Monorden
Rapamycin
Sirolimus, AY 22989, SIIA 9268A
Resistoflavine
A 3733Y, resistoflavin
(+)-Rugulosin
Radicalisin
Roxithromycin
Erythromycin 9-(-O-[2-methoxyethoxy]methyloxime)
Ramoplanin complex
Ridaforolimus
AP 23573, MK 8669, 42-Dimethylphosphinate-rapamycin