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Catsyn? Ethyl 2-[(3,5-dibromo-4-hydroxyphenyl)(3,5-dibromo-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]benzoate | CAS 1176-74-5?? ?? ??? ?????. ? ??? C22H14Br4O4??, ???? 661.96g/mol??, ??? ????? NLT 98%???.