Chlorthiophos

Chlorthiophos
Names

IUPAC name (2,5-dichloro-4-methylsulfanylphenoxy)-diethoxy-sulfanylidene-λ5-phosphane
Other names Celathion; Celamerck S-2957; Caswell No. 310A
Identifiers
CAS Number	60238-56-4
ChemSpider	484552
Jmol interactive 3D	Image
PubChem	30859
InChI InChI=1S/C11H15Cl2O4PS/c1-4-15-18(14,16-5-2)17-10-6-9(13)11(19-3)7-8(10)12/h6-7H,4-5H2,1-3H3 Key: ZYZAICVMEBZORH-UHFFFAOYSA-N InChI=1/C11H15Cl2O4PS/c1-4-15-18(14,16-5-2)17-10-6-9(13)11(19-3)7-8(10)12/h6-7H,4-5H2,1-3H3 Key: ZYZAICVMEBZORH-UHFFFAOYAM
SMILES CCOP(=S)(OCC)OC1=CC(=C(C=C1Cl)SC)Cl
Properties
Chemical formula	C₁₁H₁₅Cl₂O₃PS₂
Molar mass	361.24 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Chlorthiophos is an organophosphorus pesticide. It is a mixture of isomers:

O,O-diethyl-O-(2,5-dichloro-4-methylthio)phenyl phosphorothioate (ca. 73%)

O,O-diethyl-O-(4,5-dichloro-2-methylthio)phenyl phosphorothioate (ca. 13%)

O,O-diethyl-O-(2,4-dichloro-5-methylthio)phenyl phosphorothioate (ca. 14%)

It is extremely poisonous.

References

Chlorthiophos at www.pesticideinfo.org.

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