O ácido 6-((5-Fluoro-4-(4-fluoro-1-isopropyl-2-methyl-1H-benzo[d]imidazol-6-yl)pyrimidin-2-yl)amino)nicotínico é uma impureza heteroaromática do tipo ácido carboxílico associada a um núcleo benzimidazol-pirimidina fluorinado. Com fórmula molecular C21H18F2N6O2 e massa molecular de 424.411 g/mol, é compatível com um intermediário sintético avançado ou subproduto de प्रक्रिया decorrente de acoplamento incompleto, substituição regioisomérica ou reações hidrolíticas durante a montagem do fragmento de aminonicotínico. A elucidação estrutural normalmente requer LC-MS de alta resolução, mapeamento de fragmentos por LC-MS/MS e confirmação ortogonal por RMN, com suporte de detecção por UV com arranjo de diodos. Seu controle é considerado no contexto da ICH Q3A e, quando aplicável, da ICH M7.
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