A Impureza 38 da cefazolina (Cefazolin Impurity 38) é um produto degradado identificado durante estudos de estabilidade e síntese do ingrediente farmacêutico ativo. Caracteriza-se por massa molecular e fragmentação específicas detectadas por LC-MS e confirmadas por RMN | com tempo de retenção reproduzível em cromatografia reversa. Sua presença pode afetar pureza e perfil de impurezas polares | implicando necessidade de limites analíticos e investigação de vias de degradação. O controle inclui monitoramento por HPLC | validação de métodos | ensaios de estresse e otimização de etapas de purificação para reduzir formação durante síntese e armazenamento | assegurando conformidade com especificações e segurança do produto final.
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