2s )- 2 amino 3 methylbutanoic acid July 8, 2019 16 32 64 128 2s 3s )- 2 amino 3 methylpentanoic acid 2s 3r )- 2 amino 3 methylpentanoic acid 2 methyl 2 butanol 2 амино 3 метилбутановая кислота
