L-Homofenilalanina (CAS 943-73-7) | também conhecida como (S)-2-Amino-4-fenilbutírico | é uma impureza quiral relevante em sínteses peptídicas e de aminoácidos | cuja presença pode afetar pureza enantiomérica e propriedades físico-químicas do produto final. Caracteriza-se por solubilidade moderada em solventes orgânicos polares | ponto de fusão bem definido e espectros IR | RMN e LC-MS distintivos que permitem diferenciação de impurezas relacionadas. O controlo analítico recomendável inclui cromatografia líquida de alta eficiência com coluna quiral | LC-MS para confirmação e RMN para caracterização estrutural. Estratégias de mitigação comuns abrangem purificação por cristalização controlada e resolução enantiomérica para atender especificações de qualidade.
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