1-Hydroxy-1H-benzotriazole hydrate (1:?)123333-53-9100 % similar 1-Hydroxybenzotriazole hydrate80029-43-2100 % similar Hydroxybenzotriazole2592-95-288 % similar 1-Methylbenzotriazole13351-73-048 % similar 1-Aminobenzotriazole1614-12-648 % similar 3,4-Dihydro-3-hydroxy-4-oxo-1,2,3-benzotriazine28230-32-247 % similar 1-Hydroxy-7-azabenzotriazole39968-33-745 % similar 1H-Benzotriazole-1-propanoic acid654-15-939 % similar 1-Methylbenzimidazole1632-83-335 % similar Bop reagent56602-33-633 % similar Pybop128625-52-532 % similar Benzo(C)cinnoline230-17-131 % similar