<unk>  is a vitamin K antagonist which has anticoagulant effects and is used as a rodenticide against rats, mice, voles, ground squirrels and other rodents.   This chemical compound is an anti-coagulant with longer activity than warfarin and other synthetic indandione anticoagulants.
Diphenadione
Ethadione
Pyritinol
Ethynodiol diacetate
Phytonadione 
Menadione
Gedocarnil
Retinene