CAS Registry Number

CAS 19172-47-5 — p-Methoxyphenylthionophosphine sulfide dimer (Lawesson reagent)

p-Methoxyphenylthionophosphine sulfide dimer, commonly known as Lawesson reagent, is a sulfurizing agent used in organic synthesis to convert carbonyl groups to thiocarbonyl groups. It is a dimeric compound with the molecular formula C14H14O2P2S4 and a molecular weight of 404.47 g/mol. Available in ambient storage conditions, it is classified as a hazardous substance with a signal word of Danger. Molekula supplies p-Methoxyphenylthionophosphine sulfide dimer (Lawesson reagent) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.