1,4-Bis(4-amino-6-methylpyrimidinyl-2-thio)butane 2,2'-(1,4-Butanediylbis(thio))bis(6-methyl-4-pyrimidinamine) 4-Pyrimidinamine, 2,2'-(1,4-butanediylbis(thio))bis(6-methyl- 92629-40-8 BRN 4202490