A dopaminergic neurotoxic compound which produces irreversible clinical, chemical, and pathological alterations that mimic those found in Parkinson disease.

Synonyms: 9P21XSP91P, 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine, Pyridine, 1,2,3,6-tetrahydro-1-methyl-4-phenyl-, MPTP, N-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine