Methyl(3R)-3-(tert-butyldimethylsilyloxy)-5-oxo-6-triphenylphosphoranylidene hexanoate (CAS 147118-35-2) é uma impureza organofosforada com configuração 3R que aparece em rotas sintéticas envolvendo ylídios fosfóricos. Caracteriza-se por grupo tert-butyldimethylsilyl que aumenta lipofilicidade e vulnerabilidade à hidrólise | e por carbonila conjugada com fosforilidene que altera padrão de fragmentação. A separação analítica requer HPLC reverso otimizado | 1H e 13C NMR fornecem sinais característicos e LC-MS permite monitorar produtos de degradação. Dados de estabilidade térmica e solubilidade em solventes orgânicos são essenciais para controle de qualidade e estratégias de purificação.
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