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Catsyn? Benzoic acid, 4,4',4'',4''',4'''',4'''''-(1,2,3,4,5,6-benzenehexaylhexa-2,1-ethynediyl)hexakis- | CAS 684216-81-7?? ?? ??? ?????. ? ??? C60H30O12??, ???? 942.87g/mol??, ??? ????? NLT 98%???.