Difenacoum

Difenacoum
IUPAC name 2-hydroxy- 3-[3-(4- phenylphenyl)- 1-tetralinyl]- 4-chromenone
Other names Diphenacoum
Identifiers
CAS number	56073-07-5
PubChem	41735
KEGG	C16807 Y
Jmol-3D images	Image 1
SMILES C1C(CC2=CC=CC=C2C1C3=C(OC4=CC=CC=C4C3=O)O)C5=CC=C(C=C5)C6=CC=CC=C6
Properties
Molecular formula	C31H24O3
Molar mass	444.52 g/mol
Density	1.27 (98.7% w/w)
Melting point	211.0 – 215.0 °C (98.7% wlw)
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Difenacoum is a coumarin derivative. It has anticoagulant effects and is used as a rodenticide.

Uses

Difenacoum is sold as blue-green pellets intended to be ingested by pests such as rats and mice.

Safety and toxicity

Because other species of mammals and birds may prey upon affected rodents, there is a risk of secondary or tertiary exposure. Using radiolabled isotopes, difenacoum (and/or its metabolites) has been shown to be distributed across many organ tissues upon oral ingestion, with the highest concentrations occurring in the liver and pancreas.

Difenacoum has been shown to be highly toxic to some species of freshwater fish and green algae despite the fact that difenacoum is weakly soluble in aqueous solutions.