Methyl Parathion

**Semantic type:** Pharmacologic Substance

**Definition:** A synthetic organic thiophosphate compound and organophosphate acetylcholinesterase inhibitor that is the methyl homolog of parathion and is used as a pesticide. It is characterized as a colorless to white or tan crystalline solid that is odorless or has a pungent garlic-like odor, and exposure occurs by inhalation, ingestion, or contact.

**Synonyms:** - METHYL PARATHION - PARATHION-METHYL