1 5OF 2-(4-oxidanylidene-3~{H}-phthalazin-1-yl)ethanoic acid 1.000 2 81X 4-(aminomethyl)phthalazin-1(2h)-one 0.750 3 NVU 2-(1,2-benzoxazol-3-yl)ethanoic acid 0.750 4 F04 2-ethyl-4-methyl-phthalazin-1-one 0.706 5 NLA Naphthalen-1-yl-acetic acid 0.706