Valproic Acid EP Impurity A ( CAS NO.:109-52-4 ) chemically known as 1-Butanecarboxylic Acid is a process-related impurity of Divalproex sodium. Divalproex sodium is a coordination complex of the sodium valproate and valproic acid is an anticonvulsant and is used to treat several types of seizure disorders, tonic-clonic, and simple/complex partial seizures.
References
Reddy, S. Raghavender, et al. “Reliable GC Method for Related Substances in Divalproex Sodium Drug.” Journal of Chromatographic Science, vol. 55, no. 9, July 2017, pp. 891–98, https://doi.org/10.1093/chromsci/bmx057. ?
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