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From Biology-Online Dictionary | Biology-Online Dictionary
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(Science: chemical) N'-(1-phthalazinyl)-hydrazinecarboxylic acid ethyl ester. An antihypertensive agent with both central and peripheral action; it has some central nervous system depressant effects.

Pharmacological action: antihypertensive agents.

Chemical name: Hydrazinecarboxylic acid, 2-(1-phthalazinyl)-, ethyl ester, monohydrochloride