Sectionl. M-R Agonists choline esters:均含有季铵基团,(MR,NR) acetylcholine(ach): unstable, low selectivity methacholine(醋甲胆碱) carbachol(卡巴胆碱) bethanechol chloride(氯贝胆碱) alkaloidS:(M-R) carpine muscarine arecoline(槟榔碱)Section1. M-R Agonists choline esters: 均含有季铵基团, (M-R, N-R) acetylcholine (Ach)：unstable, low selectivity methacholine (醋甲胆碱) carbachol (卡巴胆碱) bethanechol chloride (氯贝胆碱) alkaloids: (M-R) pilocarpine muscarine arecoline (槟榔碱)