Answer: dopas

AnswerCrossword Clue
dopasDOPA, a drug to treat Parkinson's disease
dopasa phenolic amino acid C9H11NO4 occurring naturally (as in broad beans) or prepared synthetically (as from tyrosine) compare l-dopa
dopasamino acid, C9H11NO4, formed from tyrosine in the liver during melanin and epinephrine biosynthesis: the L-dopa isomer is converted in the brain to dopamine