1772-03-8 2-Amino-2-deoxy-D-galactose hydrochloride 5808-21-9 AI3-51895 D-Galactosamine hydrochloride D-Galactose, 2-amino-2-deoxy-, hydrochloride EINECS 217-198-1 Galactosamine hydrochloride Galactose, 2-amino-2-deoxy-, hydrochloride, D-