119396-03-1 4,4'-(Dithiodimethylene)bispyrimidine dihydrochloride Bis(4-methylpyrimidine)disulphide dihydrochloride Pyrimidine, 4,4'-(dithiobis(methylene))bis-, dihydrochloride Pyrimidine, 4,4'-(dithiodimethylene)bis-, dihydrochloride