Azido impuriteis compounds have an azide functional group, which is linear, polyatomic anion consisting of three nitrogen atoms with the formula N3. Its structure can be represented as −N=N+=N−. Organic azides are organic compounds having the azido functional group attached to the organic compound (R) which is represented as RN3. This R may be alky,

N-nitroso compounds, also called Nitrosamines, are a class of indirect-acting mutagens, as their metabolic degradation leads to the formation of the DNA-alkylating diazonium ion.