. . . . . . "Pyrid-2-thione" . . . . "2-Mercaptopyridine" . . . "2-Pyridinethiol" . . "2-Pyridyl mercaptan" . "2-Pyridinethione" . "2-Thiopyridone" . "2-Mercaptopyridine" . "2-Thiopyridine" . . . . "Pyridine-2-thiol" . . .