Structural Formula Vector Image
Title: Famphur
CAS Registry Number: 52-85-7
CAS Name: Phosphorothioic acid O-[4-[(dimethylamino)sulfonyl]phenyl] O,O-dimethyl ester
Additional Names: phosphorothioic acid O,O-dimethyl ester, O-ester with p-hydroxy-N,N-dimethylbenzenesulfonamide; O,O-dimethyl-O,p-(dimethylsulfamoyl)phenyl phosphorothioate; p-hydroxy-N,N-dimethylbenzenesulfonamide ester with phosphorothioic acid O,O-dimethyl ester; famophos
Manufacturers' Codes: American Cyanamid 38023; ENT-25644
Trademarks: Warbex
Molecular Formula: C10H16NO5PS2
Molecular Weight: 325.34
Percent Composition: C 36.92%, H 4.96%, N 4.31%, O 24.59%, P 9.52%, S 19.71%
Literature References: Prepn: Berkelhammer, US 3005004 (1961 to Am. Cyanamid). Metabolism: P. E. Gatterdam et al., J. Agric. Food Chem. 15, 845 (1967). Toxicology: E. W. Schafer, Toxicol. Appl. Pharmacol. 21, 315 (1972); W. D. Black et al., ibid. 50, 167 (1979).
Properties: Crystals, mp 52.5-53.5°. LD50 orally in rats: 35 mg/kg (Schafer).
Melting point: mp 52.5-53.5°
Toxicity data: LD50 orally in rats: 35 mg/kg (Schafer)
CAUTION: Cholinesterase inhibitor. See Parathion.
Use: Insecticide.
Therap-Cat-Vet: Insecticide (grubicide).

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