N-Nitroso duloxetine methods from SwissMedic and Taiwan FDA

SwissMedic OMCL has published a method for the determination of N-nitroso duloxetine in duloxetine preparations using LCMS/MS

https://www.edqm.eu/documents/52006/1925123/Method+for+the+determination+of+N-nitroso-duloxetine+in+duloxetine+preparations.pdf/31453bd0-feba-31c1-3fec-2f0263a49fe1?t=1709204208774

Taiwan FDA published a method in July

https://www.fda.gov.tw/tc/includes/GetFile.ashx?mid=189&id=47049&t=s