Tephrosin
Encyclopedia
Tephrosin is rotenoid
Rotenoid
Rotenoids are naturally occurring substances containing a cis-fused tetrahydrochromeno[3,4-b]chromene nucleus. Rotenoids are related to the isoflavones....

. It is a natural fish poison found in the leaves and seeds of Tephrosia purpurea
Tephrosia purpurea
Tephrosia purpurea is a species of flowering plant in the pea family, Fabaceae, that has a pantropical distribution. It is a common wasteland weed. In many parts it is under cultivation as green manure crop...

and T. vogelii
Tephrosia vogelii
Tephrosia vogelii, the fish-poison-bean or Vogel tephrosia , tefrósia or barbasco guineano , is a flowering plant species in the genus Tephrosia.The two rotenoids deguelin and tephrosin can be found in T. vogelii....

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