1-Propargyl-5-bromopyrimidin-2-one 2(1H)-Pyrimidinone, 5-bromo-1-(2-propynyl)- 5-24-02-00068 (Beilstein Handbook Reference) 5-Bromo-1-(2-propynyl)-2(1H)-pyrimidinone 63331-28-2 BRN 0639923 NY 3163