1. Pathways for N-nitroso compound formation: secondary amines and beyond;López-Rodríguez;Org Process Res Dev,2020
2. EMA 2021. CHAMPIX (varenicline) - lots to be recalled due to presence of impurity N-nitroso-varenicline. https://www.ema.europa.eu/en/documents/dhpc/direct-healthcare-professional-communication-dhpc-champix-varenicline-lots-be-recalled-due-presence_en.pdf. Accessed November 23, 2022.
3. FDA 2021. Pfizer expands voluntary nationwide recall to include all lots of CHANTIX® (Varenicline) tablets due to N-nitroso varenicline content. https://www.fda.gov/safety/recalls-market-withdrawals-safety-alerts/pfizer-expands-voluntary-nationwide-recall-include-all-lots-chantixr-varenicline-tablets-due-n. Accessed November 23, 2022.
4. Health Canada 2022. Pfizer recalls Inderal-LA (propranolol hydrochloride) capsules due to a nitrosamine impurity. https://recalls-rappels.canada.ca/en/alert-recall/pfizer-recalls-inderal-propranolol-hydrochloride-capsules-due-nitrosamine-impurity. Accessed November 23, 2022.
5. FDA 2022. Sandoz, Inc. Issues nationwide recall of 13 lots of orphenadrine citrate 100 mg extended release tablets due to presence of a nitrosamine impurity. https://www.fda.gov/safety/recalls-market-withdrawals-safety-alerts/sandoz-inc-issues-nationwide-recall-13-lots-orphenadrine-citrate-100-mg-extended-release-tablets-due. Accessed November 23, 2022.