CH3-CH(CH3)-CH2-CH2-CH2-CH(OH)-CH3
CH3-CH2-CH(C=O)-CH2-CH(CH3)-CH2-CH3
CH3-CH2-CH2-COOH
Br-C6H4-NO2
CH3-CH2-NH2
C6H12O6
CH3-CH2-CH2-CH(NH2)-COOH
CH3-CH(CH3)-CH2-CH2-CH2-CH(OH)-CH3
CH3-CH2-CH(C=O)-CH2-CH(CH3)-CH2-CH3
CH3-CH2-CH2-COOH
Br-C6H4-NO2
CH3-CH2-NH2
C6H12O6
CH3-CH2-CH2-CH(NH2)-COOH