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Lawesson's reagent

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Lawesson's reagent molecular structure
Molecular structure

The Sigma-Aldrich catalog lists 3 grades and pack sizes of Lawesson's reagent (CAS 19172-47-5). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS19172-47-5
Molecular formulaC14H14O2P2S4
Molecular weight404.45 g/mol
IUPAC name2,4-bis(4-methoxyphenyl)-2,4-bis(sulfanylidene)-1,3,2λ5,4λ5-dithiadiphosphetane
SynonymsP-Anisyldithiophosphonic anhydride · RefChem:798662 · Lawesson reagent · Lawesson reagent, 97% · orb1705505 · LAWESSON'S REAGENT [MI]
Safety & Hazards (GHS) Danger
Flammable Flammable
  • H261 In contact with water releases flammable gas

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand Product / grade Code
Sigma LAWESSON'S REAGENT, 97% 227439-100G
227439-10G
227439-25G		 Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.