Chlorpyrifos-Methyl is virtually the same as Chlorpyrifos...just not as many Carbons and Hydrogens in the molecule, the full IUPAC name is as follows:

O,O-dimethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate

Chemical Formula: C₇H₉Cl₃NO₃PS

The structure is slightly different as it is dimethyl as opposed to diethyl. Methyl means that it based on a methane molecule to start with which has the structure CH_4.

Diethyl means that the structure is based on ethane; H₃C-CH₃

LD50/LC50: The LD50 for both rat and mouse is..1000 mg/kg.

All the comments on the Chlorpyrifos page apply....

 

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