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4,4′-二氟二苯甲酮, 99%
4,4′-二氟二苯甲酮, TraceCERT®, certified reference material, 19F-qNMR Standard, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
4,4′-二氟二苯甲酮, Pharmaceutical Secondary Standard; Certified Reference Material