Atorvastatin EP Impurity J, también denominada Atorvastatin 3-Deoxy-Hept-2-Enoic Acid, 2,3-Anhydro Atorvastatin o Dehydro Atorvastatin Acid, es un producto de degradación o subproducto de proceso definido del andamiaje de atorvastatina, no un simple estereoisómero. El CAS 1105067-93-3 corresponde a la especie base libre neutra con fórmula C33H33FN2O4 y peso molecular 540.64 g/mol. Su estructura indica deshidratación y migración del doble enlace en la cadena lateral de ácido heptenoico, coherente con una eliminación durante la síntesis o bajo estrés térmico, ácido u oxidativo. Su asignación estructural y cuantificación suelen requerir LC-MS/MS, espectrometría de masas de alta resolución y RMN.
Referencias
Atorvastatin By Lindsey A McIver, Momin S Siddique Container: Nih.gov Publisher: StatPearls Publishing Year: 2021 URL: https://www.ncbi.nlm.nih.gov/books/NBK430779/
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