16-Dehydro Pregnenolone Acetate Oxime (DHPG Oxime Acetate) | CAS 2174-2-13 | é uma impureza estruturalmente relacionada ao pregnenolona acetato com função oxima que pode surgir por oximação incompleta | reações laterais durante acetilação ou desidratação nas etapas de síntese. Técnica e analiticamente | exige caracterização por HPLC-UV e LC-MS para quantificação e por RMN e infravermelho para confirmação estrutural | uma vez que o grupo oxima altera polaridade e padrão de fragmentação. O controle inclui métodos de purificação cromatográfica | critérios de limite em especificação e monitorização em estudos de estabilidade para prevenir impacto na qualidade do lote.
Referências
Shingate, Bapurao B., et al. “Stereoselective Syntheses of 20-Epi Cholanic Acid Derivatives from 16-Dehydropregnenolone Acetate.â€Â Tetrahedron, vol. 63, no. 25, June 2007, pp. 5622–35, https://doi.org/10.1016/j.tet.2007.04.014.
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