2577 Marinobufagenin Marinobufagin is a cardiotoxic bufanolide steroid secreted by certain toads (Bufo rubescens, Bufo marinus). It is a vasoconstrictor. (L1085) 470-42-8 11969465 C24H32O5 400.224970 White powder. Ingestion (L1816) Marinobufagin blocks the sodium/potassium pump in heart tissue. (L1084, L1085) No indication of carcinogenicity to humans (not listed by IARC). Marinobufagin is a cardiotoxic bufanolide steroid secreted by certain toads (Bufo rubescens, Bufo marinus). (L1085) Marinobufagin is cardiotoxic and also causes vasoconstriction. (L1085) Symptoms include nausea, vomiting, anorexia, diarrhoea, abdominal pain, wild hallucinations, delirium, and severe headache. Depending on the severity the victim may later suffer irregular and slow pulse, tremors, various cerebral disturbances, especially of a visual nature, convulsions, and deadly disturbances of the heart such as heart block, brachycardia, or tachycardia. (L1085, L1084) 2009-07-03T22:19:15Z 2014-12-24T20:25:40Z C093896 Marinobufagenin true CC12CCC3C(CCC4(O)CC(O)CCC34C)C11OC1CC2C1=COC(=O)C=C1 C24H32O5 InChI=1S/C24H32O5/c1-21-8-5-15(25)12-23(21,27)10-7-17-16(21)6-9-22(2)18(11-19-24(17,22)29-19)14-3-4-20(26)28-13-14/h3-4,13,15-19,25,27H,5-12H2,1-2H3 InChIKey=JMNQTHQLNRILMH-UHFFFAOYSA-N 400.5079 400.224974134 Exogenous Solid