Marinobufagenin

Marinobufagenin (marinobufagin) is a cardiotonic bufadienolide steroid secreted by the toad Bufo rubescens and other related species such as Bufo marinus. It is a vasoconstrictor with effects similar to digitalis. Marinobufagenin (marinobufagin) is a cardiotonic bufadienolide steroid secreted by the toad Bufo rubescens and other related species such as Bufo marinus. It is a vasoconstrictor with effects similar to digitalis.