化学名9H-Pyrido[3,4-b]indole-3-carboxylicacid,methylester***名称KumujianB异名（中)1-甲酯基-β-咔啉异名（英)1-Carbomethoxy-β-carboline,Methylβ-carboline-1-carbxylate分子量226.23理化性质白色针状结晶(0.05毫米130°升华),熔点166°。***针状结晶(***),熔点168～169°。UVλEtoHmaxnm(logε):215.5(4.62),246(4.25),259(4.24),276(4.30),303(4.01),372(3.72);IRλKBrmaxμ:3.03(〉NH),5.94(-C=O);MSm/e:226(M+),196(M-CH2O),194(M-CH3OH),168(M-CO2CH3),140,128,114,88,84,83,75,69,63,60,55,44,43,28,18;NMR(CDCl3)δ:4.12(3H,s,-CO2CH3),7.22～8.20(4H,m,C5,6,7,8-H),8.10(1H,d,***-H),8.59(1H,d,C3-H),9.94(1H,br.s,〉NH)。)