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Catsyn? Sodium 3-(pyridin-2-YL)-1,2,4-triazine-5,6-diyl]bis(benzene-4,4'-sulphonate) | CAS 69898-45-9?? ?? ??? ?????. ? ??? C20H13N4NaO6S2??, ???? 492.46g/mol??, ??? ????? NLT 98%???.