N-Nitroso Fluoxetine is a nitrosamine impurity that may be found in fluoxetine-based medications, such as Prozac, which is commonly used to treat depression, anxiety disorders, and obsessive-compulsive disorder (OCD). Nitrosamines are classified as probable human carcinogens, which has raised concerns over their presence in pharmaceuticals. https://chemicea.com/product/n-nitroso-fluoxetine