2-((Hydroxy((6-(4-nitrophenoxy)-6-oxohexyl)oxy)phosphinyl)oxy)-N,N,N-trimethylethanaminium hydroxide, inner salt 4-Nitrophenyl-6-(O-phosphocholine)hydroxyhexanoate 73785-43-0 Epc-nph Ethanaminium, 2-((hydroxy((6-(4-nitrophenoxy)-6-oxohexyl)oxy)phosphinyl)oxy)-N,N,N-trimethyl-, hydroxide, inner salt p-Nitrophenyl-6-(O-phosphocholine)hydroxyhexanoate