4-Amino-2-chloro-5-methylpyrimidine-15N2,13C is a labelled analogue of 4-Amino-2-chloro-5-methylpyrimidine (A603470), which contains up to 20% 4-Chloro-5-methyl-4-pyrimidinamine. 4-Amino-2-chloro-5-methylpyrimidine-15N2,13C is also an intermediate in synthesizing 5-Methyl Cytosine-13C,15N2 Hydrochloride (M294702), which is a labelled derivative of Dibarbituric acid.