1-Propionyl-2,2,4,6-tetramethyl piperazine 2,2,4,6-Tetramethyl-1-propionyl piperazine 4177-42-8 5-23-03-00341 (Beilstein Handbook Reference) BRN 0511913 Piperazine, 1-propionyl-2,2,4,6-tetramethyl-