3-Pyridinol, 5,5'-(dithiodimethylene)bis(4-chloromethyl-2-methyl-, dihydrochloride 4-Chlorpyridoxin-5-disulfid dihydrochlorid [German] 5,5'-Dithiodimethylenebis(4-chloromethyl-2-methyl-3-pyridinol) dihydrochloride 73840-49-0