1,2,3,4-Tetrahydro-4,6-dihydroxy-1-isoquinolinecarboxylic acid 1-Isoquinolinecarboxylic acid, 1,2,3,4-tetrahydro-4,6-dihydroxy- 23842-54-8 5-22-05-00387 (Beilstein Handbook Reference) BRN 0406027