pKb,=6.0 N O pKb,=11.7O 士的宁
士的宁 N O N O pKb2 =11.7 pKb1 =6.0
OCH CH2 OCH3 CH3O N p Kp=787 CH3O 罂粟碱
N CH3 O CH3 O CH2 OCH3 OCH3 罂粟碱 pKb =7.87
CH CH3 N N N N CH pKb=1415 咖啡因
咖啡因 N N N N CH3 CH3 CH3 O O pKb =14.15
pKb=6.13 N—CH H HO O OH 吗啡 pKa=9.85
吗啡 HO O OH H N CH3 pKa =9.85pKb =6.13
N N N N CH3 CH3 O O 茶碱 H