(+-)-(2,6-Dichloro-4-(4,5-dihydro-3,5-dioxo-as-triazin-2(3H)-yl)phenyl)(p-fluorophenyl)acetonitrile 103337-74-2 DRG-0137 LETRAZURIL Letrazuril [INN] Letrazurilo [INN-Spanish] Letrazurilum [INN-Latin]