@谱 H 44 CH, C=0+H CH, CHNH, CO,, NH,C=0, (CH3)2N CH3 0 45 CHOH, CH, CH2 OH, CH20CH3, C-OH, CH3CH-0+h 46 NO 47 CH2 SH, CH3S 48 CH3S+ h 9 CH,CI