Impureza: Benzyl 4-Fluorophenyl Ketone (CAS 347-84-2) | também conhecida como 1-(4-fluorofenil)-2-feniletan-1-ona ou 4-fluorodeoxibenzoin | aparece como subproduto em reações de acilação e acoplagem; caracteriza-se por sinais de 19F NMR | 1H NMR e ressonância de carbono compatíveis com a função cetona e o anel aromático fluorado. Esta impureza pode comprometer especificações de pureza e estabilidade e requer quantificação por HPLC com detecção UV | com confirmação por GC-MS ou LC-MS. Recomenda-se validação analítica | estabelecimento de limites de aceitação e estratégias de purificação por cromatografia e recristalização para controle de qualidade.
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