7-hidroxiácido abscísico (7-Hydroxy Abscisic Acid | CAS 91897-25-5) es una impureza observada en preparaciones de ácido abscísico que resulta de reacciones de oxidación o hidroxilación en la posición 7 del núcleo molecular. Su presencia afecta el perfil de pureza y puede alterar propiedades fisicoquímicas y estabilidad del lote. Su caracterización analítica se realiza mediante técnicas como HPLC acoplada a espectrometría de masas LC-MS | espectroscopía NMR y análisis de impurezas relacionadas para establecer límites aceptables. El control riguroso de proceso y condiciones de almacenamiento minimiza su formación y facilita cumplimiento regulatorio en ensayos de calidad.
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