(2-oxopropyl)(triphenyl)phosphonium bromide InChI=1/C21H20OP.BrH/c1-18(22)17-23(19-11-5-2-6-12-19,20-13-7-3-8-14-20)21-15-9-4-10-16-21;/h2-16H,17H2,1H3;1H/q+1;/p- phosphonium, (2-oxopropyl)triphenyl-, bromide