Nitrosamines can be formed through various chemical processes, including the reaction between nitrites and secondary amines in certain conditions. It is a N-Nitroso of secondary amine present in Terbutaline. Nitrosamines are part of a broader class of compounds known as N-nitroso compounds. Buy high quality 15N-Nitroso Terbutaline from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of 15N-Nitroso Terbutaline.