2 amino 4 methylpentanoic acid July 8, 2019 16 32 64 128 2 amino 4 methylpentanoic acid structure 2 amino 4 methylhexanoic acid 2s )- 2 amino 4 methylpentanoic acid S )- 2 amino 4 methylpentanoic acid 2 amino 4 methylpentane
