. "Hydroxybenzotriazole" . "HOBt reagent" . . "N-Hydroxybenzotriazole" . "HOBt" . "1-hydroxy-benzotriazole" . . "hydroxybenzotriazole" . . . "1H-1,2,3-Benzotriazol-1-ol" . . . "Hydroxybenzotriazole" . . "HOBt" . . .