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Catsyn? 5-Butyl-1,3-difluoro-2-[2-[4-(4-propylphenyl)phenyl]ethynyl]benzene | CAS 221526-79-0?? ?? ??? ?????. ? ??? C27H26F2??, ???? 388.49g/mol??, ??? ????? NLT 98%???.