2 3 dimethylpentane chiral July 8, 2019 16 32 64 128 2 3 dimethylpentane chiral centres 2 3-dimethylpentane chiral or achiral 2 3-dimethylpentane structure 2 3-dimethylpentan 2 3-dimethylpentane 2 3 dimethyl 2 3-dimethylpentane isomers