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Catsyn? Benzaldehyde, 4,4'-[(2,5-dimethoxy-1,4-phenylene)DI-2,1-ethynediyl]bis- | CAS 1190963-83-7?? ?? ??? ?????. ? ??? C26H18O4??, ???? 394.42g/mol??, ??? ????? NLT 98%???.