5-Amino-2-(hydroxymethyl)benzeneboronic acid, dehydrate, N-BOC protected 98%6-Amino-1-hydroxy-2,1-benzoxaborolane, N-BOC protected6-(BOC-AMINO)-1-HYDROXY-2,1-BENZOXABOROLANE5-(Boc-amino)-2-(hydroxymethyl)benzeneboronic acid cyclic monoester6-(Boc-amino)-1-hydroxy-2,1-benzoxaborolane5-(Boc-amino)-2-(hydroxymethyl)benzeneboronic acid hemiester5-(Boc-氨基)-2-(羟基甲基)苯硼酸半酯