4-((3,4-Dimethoxy-2-(1-pyrrolidinylcarbonyl)benzylidene)amino)antipyrine 5-25-14-00116 (Beilstein Handbook Reference) 66913-52-8 ANTIPYRINE, 4-((3,4-DIMETHOXY-2-(1-PYRROLIDINYLCARBONYL)BENZYLIDENE)AMINO)- BRN 0729553