1-(1',2',3',4',5'-Pentahydroxypentyl)-1,2,3,-tetrahydro-2-carboline-3-carboxylic acid 154204-09-8 Pentitol, 1-C-(3-carboxy-2,3,4,9-tetrahydro-1H-pyrido(3,4-b)indol-1-yl)- Tetrahydropentoxyline