Impureza do amikacina (CAS 39831-55-5) apresenta estrutura aminoglicosídica com múltiplos grupos amino e hidroxila formando sais sulfato | cuja alta polaridade resulta em retenção reduzida em cromatografia reversa e intensa ionização positiva em eletrospray | favorecendo detecção por LC-MS e HPLC; exibe massa molecular definida e padrões de fragmentação que permitem identificar degradações por desaminação e desacetilação. Sua solubilidade em meio aquoso e sensibilidade a pH e temperatura exigem condições controladas de preparo e armazenamento. Dados cromatográficos e espectrométricos de referência suportam quantificação precisa e avaliação de pureza em matérias-primas farmacêuticas.
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