Title: Cythioate
CAS Registry Number: 115-93-5
CAS Name: Phosphorothioic acid O-[4-(aminosulfonyl)phenyl] O,O-dimethyl ester
Additional Names: phosphorothioic acid O,O-dimethyl ester O-ester with p-hydroxybenzenesulfonamide; O,O-dimethyl O-p-sulfamoylphenylphosphorothioate
Manufacturers' Codes: CL-26691; ENT-25640
Trademarks: Proban
Molecular Formula: C8H12NO5PS2
Molecular Weight: 297.29
Percent Composition: C 32.32%, H 4.07%, N 4.71%, O 26.91%, P 10.42%, S 21.57%
Literature References: Prepn: G. Berkelhammer, US 3005004 and R. I. Hewitt, G. Berkelhammer, US 3179560 (1961, 1965 to Am. Cyanamid). Pharmacodynamics: H. G. Smith, R. L. Goulding, J. Econ. Entomol. 63, 1640 (1970). Efficacy as ectoparasiticide: C. P. Doval, I. Gupta, Indian Vet. J. 55, 890 (1978); P. M. Bowen, N. J. Caldwell, Vet. Med. Small Anim. Clin. 77, 79 (1982). Toxicity data: E. E. Kenaga, W. E. Allison, Bull. Entomol. Soc. Am. 15, 85 (1969).
Properties: Crystals, mp 70-71°. nD25 1.5346. LD50 orally in rats: 160 mg/kg (Kenaga, Allison).
Melting point: mp 70-71°
Index of refraction: nD25 1.5346
Toxicity data: LD50 orally in rats: 160 mg/kg (Kenaga, Allison)
Use: Insecticide.
Therap-Cat-Vet: Ectoparasiticide.
Cytidine Cytisine Cytochalasins Cytochrome c Cytochromes P450

Skeletal formula of cythioate with some implicit hydrogens
CAS number 115-93-5 YesY
PubChem 8293
ChemSpider 7992 YesY
UNII 3OOH7Q4333 YesY
EC number 204-115-9
KEGG D07768 YesY
MeSH Cythioate
ATCvet code QP53AF10
Beilstein Reference 2148114
Jmol-3D images Image 1
Molecular formula C8H12NO5PS2
Molar mass 297.29 g mol−1
Melting point 71 °C; 160 °F; 344 K
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Cythioate is an organothiophosphate chemical used as an insecticide and anthelmintic. It has been sold under the trade names Cyflee and Proban, under which form it has been used for veterinary purposes against fleas.[3]