N-Nitroso desloratadine-d4 is intended for use as an internal standard for the quantification of N-nitroso desloratadine by GC- or LC-MS. N-Nitroso desloratadine is a nitrosamine.1
1.Wang, Y., You, S., Ruan, M., et al.The use of potassium/sodium nitrite as a nitrosating agent in the electrooxidative N-nitrosation of secondary aminesEur. J. Org. Chem.223289-3293(2021)