Ultra-sensitive HPLC-ESI-MS/MS quantitation of N-nitroso-phenylephrine in phenylephrine-containing anticold products
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Phenylephrine is widely used in anticold medications and contains a secondary amine moiety capable of forming N-nitroso-phenylephrine (NNPE), a potentially carcinogenic nitrosamine impurity. Despite increasing attention to nitrosamine contamination in pharmace... ...