Brodifacoum

Brodifacoum[1]
Names
IUPAC name
3-[3-[4-(4-Bromophenyl)phenyl]-1,2,3,4-tetrahydronaphthalen-1-yl]-2-hydroxychromen-4-one
Other names
Bromfenacoum
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.054.509 Edit this at Wikidata
RTECS number
  • GN4934750
UNII
  • InChI=1S/C31H23BrO3/c32-24-15-13-20(14-16-24)19-9-11-21(12-10-19)23-17-22-5-1-2-6-25(22)27(18-23)29-30(33)26-7-3-4-8-28(26)35-31(29)34/h1-16,23,27,33H,17-18H2 checkY
    Key: VEUZZDOCACZPRY-UHFFFAOYSA-N checkY
  • InChI=1/C31H23BrO3/c32-24-15-13-20(14-16-24)19-9-11-21(12-10-19)23-17-22-5-1-2-6-25(22)27(18-23)29-30(33)26-7-3-4-8-28(26)35-31(29)34/h1-16,23,27,33H,17-18H2
    Key: VEUZZDOCACZPRY-UHFFFAOYAI
  • Brc1ccc(cc1)c2ccc(cc2)C4Cc3ccccc3C(C4)C\5=C(/O)c6ccccc6OC/5=O
Properties
C31H23BrO3
Molar mass 523.426 g·mol−1
Melting point 228 to 230 °C (442 to 446 °F; 501 to 503 K)
Insoluble
Pharmacology
Oral; dermal; inhalation (dusts) (for poisoning)
Pharmacokinetics:
100%
slow, incomplete, hepatic
Slow; 20—130 days
faeces; very slow
Hazards
Lethal dose or concentration (LD, LC):
270 μg/kg (rat, oral)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Brodifacoum is a highly lethal 4-hydroxycoumarin vitamin K antagonist anticoagulant poison. In recent years, it has become one of the world's most widely used pesticides. It is typically used as a rodenticide, but is also used to control larger pests such as possums.[2]

Brodifacoum has an especially long half-life in the body, which ranges up to nine months, requiring prolonged treatment with antidotal vitamin K for both human and pet poisonings. It has one of the highest risks of secondary poisoning to both mammals and birds.[3] Significant experience in brodifacoum poisonings has been gained in many human cases where it has been used in attempted suicides, necessitating long periods of vitamin K treatment. In March 2018, cases of severe coagulopathy and bleeding associated with synthetic cannabinoid use contaminated with brodifacoum were reported in five states of the US.

  1. ^ Merck Index, 11th Edition, 1368
  2. ^ Eason, C.T. and Wickstrom, M. Vertebrate pesticide toxicology manual, New Zealand Department of Conservation
  3. ^ Rodenticides: Topic Fact Sheet, National Pesticide Information Center