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Catsyn? 4,4',4'',4'''-(Pyrene-1,3,6,8-tetrayltetrakis(ethyne-2,1-diyl))tetrabenzaldehyde | CAS 2438216-59-0?? ?? ??? ?????. ? ??? C52H26O4??, ???? 714.76g/mol??, ??? ????? NLT 98%???.