• CAS 56181-82-9, EC 260-038-0
  • Restricted China rodenticides
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CAS No.: 56181-82-9 | C22H19BrO | Intermediate of brodifacoum

  • Brodifacoum Stage 7 (before coumarin)
    Mol. Formula: C22H19BrO
    CAS No.: 56181-82-9
    EC No.: 260-038-0
    Purity in stock: ≥ 99.3%, 99.5% (2 bathes)
  • IUPAC Name: 3-(4′-bromobiphenyl-4-yl)-1,2,3,4-tetrahydronaphthalen-1-ol
    China Reg. name: 3-(4′-bromo[1,1′-biphenyl]-4-yl)-1,2,3,4-tetrahydro-1-naphthol
    China’s Regulatory: MEP Directive No. 7/2010
    New Substances Registration No.: 2011009/MEP
    Registration Date at China MEP: 12. JAN, 2011

China’s earliest registration and production of Brodifacoum

  • Siyang Rodenticide Factory is China’s first manufacturer of Brodifacoum active ingredient registered with the Ministry of Agriculture. It obtained registration certification from the Ministry of Agriculture in 1998, with a registered purity of 95% at that time. After the implementation of national standards in 2007, our registered purity has been increased to 98%, which is unique in China.
  • Since obtaining export qualifications in 2008, the factory has begun exporting Brodifacoum TC and has received orders for some intermediates. To this end, the factory has implemented the most stringent quality control measures in its synthetic production process. Currently, the quality of intermediates prior to the final production step (before 4-hydroxycoumarin) has reached world-class standards and has earned the trust of international customers.

Rodenticide intermediates registered under China REACH

(C22H19BrO, the last intermediate before 4-hydroxycoumarin synthesis)
  • The rodenticide intermediates C22H20O (step 6 in the synthesis of Difenacoum) and C22H19BrO (step 7 in the synthesis of Brodifacoum) produced by us were registered under China’s REACH regulations on January 12, 2011. The regulations have since been updated to the 2020 version.

Stock

(not available)
  • Regarding the stock of Brodifacoum intermediate 6: As of 2025, we only have the last batch of orders remaining, which are reserved exclusively for one of our customers. Once sold out, no further supplies will be available.