1-(2-Furyl)-1,2,3,4-tetrahydro-9H-pyrido(3,4-b)indole-3-carboxylic acid 1-Furyl-beta-carboline-3-carboxylic acid 1H-Pyrido(3,4-b)indole-3-carboxylic acid, 1-(2-furanyl)-2,3,4,9-tetrahydro-, (1R-cis)- 91308-65-5 FCCA