·局麻药 南美洲古柯 Erythroxylum coca Lam 可卡因 Cocaine 普鲁卡因 Procaine (1905) H2N CH3 Lidocaine NH (1943 Synthesis; CH3 1949 on market) CH3 CH3 南美洲古柯 Erythroxylum coca Lam • 局麻药 可卡因 Cocaine 普鲁卡因 Procaine （1905） N O O O O H H2N O O N NH O N CH3 CH3 CH3 CH3 Lidocaine （1943 Synthesis; 1949 on market)