Chlorpyrifos-methyl

**Semantic type:** Pharmacologic Substance

**Definition:** A synthetic organophosphate acetylcholinesterase inhibitor that is used as a pesticide. It is characterized as a volatile and non-persistent white to pale yellow solid with a slight mercaptan odor, and exposure occurs by inhalation, ingestion, or contact.

**Synonyms:** - CHLORPYRIFOS-METHYL - CHLORPYRIPHOS-METHYL