5486-67-9 6-Methyl-2-(4-pyridyl)cinchoninic acid 6-Methyl-2-(4-pyridyl)cinchoninsaeure [German] CINCHONINIC ACID, 6-METHYL-2-(4-PYRIDYL)- Kyselin 6-metyl-2-(4-pyridyl)-cinchoninova [Czech]