Assign Priorities O、2OH C H3C H CI natural alanine CH expands to c CH(CH3) O C-CH CHOH CH(CH3)2 H CHoH Chapter 5Chapter 5 8 Assign Priorities C C O OH H3C NH2 H natural alanine 1 2 3 4 Cl Cl H H * 1 2 3 4 1 2 3 4 => C C O H C H CH2 CH2OH CH(CH3) 2 * C C C CH2OH CH(CH3 ) 2 H O O C C H CH2 C * expands to