1 U19 5-imino-4-(2-trifluoromethyl-phenylazo)-5h-pyrazol-3-ylamine 1.000 2 F18 4-[(E)-(3,5-diamino-1h-pyrazol-4-yl)diazenyl]phenol 0.750 3 U13 4-(4-fluoro-phenylazo)-5-imino-5h-pyrazol-3-ylamine 0.750