2,3,5,6-Tetrachloro-4-pyridinol sodium salt 2322-38-5 4-Pyridinol, 2,3,5,6-tetrachloro-, sodium salt 5000-22-6 89283-05-6 EINECS 225-664-0 Sodium 2,3,5,6-tetrachloropyridin-4-olate