2-Mercaptoetanol (CAS: 60-24-2) | também conhecido como 2-sulfanylethanol ou mercaptoetanol | apresenta-se como impureza crítica em sínteses e formulações devido à sua alta reatividade sulfidrílica e odor pungente. Mesmo em traços pode reduzir rendimento | contaminar catalisadores | alterar ensaios redox e provocar corrosão de componentes metálicos. A tendência à oxidação formando disulfeto exige controle de armazenamento e manuseio. A detecção e quantificação são tipicamente realizadas por GC-MS | HPLC com derivatização ou titulação redox | e limites devem ser estabelecidos conforme risco toxicológico e exigências regulatórias. Estratégias de remoção incluem destilação a vácuo | colunas de troca redox e tratamento com agentes desulfidantes.
Referências
Asfari, M., et al. “Establishment of 2-Mercaptoethanol-Dependent Differentiated Insulin-Secreting Cell Lines.†Endocrinology, vol. 130, no. 1, Jan. 1992, pp. 167–78, https://doi.org/10.1210/endo.130.1.1370150.
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