(5-Amino-2-hydroxymethylphenyl)-boronic acid hydrochloride, dehydrate5-Amino-2-(hydroxymethyl)benzeneboronic acid hydrochloride dehydrate6-Amino-1-hydroxy-2,1-benzoxaborolane hydrochloride5-Amino-2-(hydroxymethyl)benzeneboronic acid cyclic monoester hydrochloride5-Amino-2-(hydroxymethyl)benzeneboronic acid hemiester hydrochloride5-氨基-2-(羟甲基)苯硼酸半酯盐酸盐6-AMINO-1-HYDROXY-2,1-BENZOXABOROLANE HYDROCHLORIDE