pargyline pargyline pargyline (brand name eutonyl) is an irreversible selective monoamine oxidase (mao)-b inhibitor drug (ic50 for mao-a is 0.01152 μmol/l and for mao-b is 0.00820 μmol/l) it was brought to market in the us and the uk by abbott in 1963 as an antihypertensive drug branded "eutonyl". it was one of several mao inhibitors introduced in the 1960s including nialamide, isocarboxazid, phenelzine, and tranylcypromine.: 146 : 60 by 2007 the drug was discontinued and as of 2014 there were no generic versions available in the us. in addition to its actions as an maoi, pargyline has been found to bind with high affinity to the i2 imidazoline receptor (an allosteric site on the mao enzyme). pargylineclinical datamedlineplusa682088atc codec02kc01 (who) c02ll01 (who)identifiers iupac name n-benzyl-n-methylprop-2-yn-1-amine cas number555-57-7 ypubchem cid4688iuphar/bps7262drugbankdb01626 nchemspider4526 yunii9mv14s8g3echemblchembl673 ycomptox dashboard (epa)dtxsid3023423 echa infocard100.008.275 chemical and physical dataformulac11h13nmolar mass159.232 g·mol−13d model (jsmol)interactive image smiles c#ccn(c)cc1ccccc1 inchi inchi=1s/c11h13n/c1-3-9-12(2)10-11-7-5-4-6-8-11/h1,4-8h,9-10h2,2h3 ykey:dpwpwrlqfgfjfi-uhfffaoysa-n y ny (what is this?) (verify)