7815. Propetamphos

Nomenclature

CAS number: 31218-83-4
(E)-3-[[(Ethylamino)methoxyphosphinothioyl]oxy]-2-butenoic acid 1-methylethyl ester; (E)-3-hydroxycrotonic acid isopropyl ester O-ester with O-methyl ethylphosphoramidothioate; (E)-1-methylethyl 3-[[(ethylamino)methoxyphosphinothioyl]oxy]-2-butenoate; (E)-O-2-isopropoxycarbonyl-1-methylvinyl O-methyl ethylphosphoramidothioate; SAN-322I; Catalyst (Wellmark).
C10H20NO4PS; mol wt 281.31.
C 42.70%, H 7.17%, N 4.98%, O 22.75%, P 11.01%, S 11.40%.

Description and references

Prepn: J. P. Leber, K. Lutz, DE 2035103 corresp to US 3758645 (1971, 1973 to Sandoz). Activity: W. Berg, R. Gothe, Proc. Br. Crop Prot. Conf. - Pests Dis. 1979, 517.

Chemical structure

Properties

Yellowish liquid, bp0.005 87-89°. nD20 1.495. d420 1.1294. Soly in water at 24°: 110 mg/l. Sol in most organic solvents. LD50 orally in male rats: 82 mg/kg (Berg, Gothe).

Use

Insecticide.

Therapeutic Category (Veterinary)

Ectoparasiticide.