7-isoquinolinecarboxylic acid ISOQUINOLINE-8-CARBALDEHYDE Isoquinoline-1-carboxylic acid Methyl 3-isoquinolinecarboxylate 6-Isoquinolinecarboxaldehyde (9CI) Isoquinoline-4-carbaldehyde 8-isoquinolinyl-boronic acid C-ISOQUINOLIN-4-YL-METHYLAMINE 7-Isoquinolinecarboxaldehyde (6CI,9CI) ISOQUINOLINE-5-CARBALDEHYDE