33779-98-5

Basic information

• Product Name: Butanedioic acid, [(dimethoxyphosphinothioyl)thio]-, 4-ethyl 1-methyl ester
• CAS NO: 33779-98-5
• Molecular Formula: C9H17O6PS2
• Mol File: 33779-98-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Butanedioic acid, [(dimethoxyphosphinothioyl)thio]-, 4-ethyl 1-methyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Butanedioic acid, [(dimethoxyphosphinothioyl)thio]-, 4-ethyl 1-methyl ester(33779-98-5)
• EPA Substance Registry System: Butanedioic acid, [(dimethoxyphosphinothioyl)thio]-, 4-ethyl 1-methyl ester(33779-98-5)

Safety Data

• Hazardous Substances Data: 33779-98-5(Hazardous Substances Data)

Upstream product

• 67-56-1 methanol 
• 121-75-5 [(dimethoxyphosphinothioyl)thio]-butanedioic acid, diethyl ester 

Relevant articles and documents

Process for Preparing Malathion for Pharmaceutical Use

The present invention provides a process for preparing a highly pure form of malathion having a reduced level of toxic impurities. In addition, the malathion prepared by the process of this invention is storage stable. The level of toxic impurities in the malathion, e.g., isomalathion, O,O,S-trimethyl phosphorodithioate (MeOOSPS), O,O,S-trimethyl phosphorothioate (MeOOSPO), O,S,S-trimethyl phosphorodithioate (MeOSSPO), malaoxon, isomalathion, diethyl fumarate, methyl malathion, dimethyl malathion, O,O-methyl,ethyl-S-(1,2-dicarboethoxy)ethyl-phosphorodithioate are lower than that of any other commercial preparation of malathion that may be used for pharmaceutical purposes.