Dizabo, Pierre et al. published their research in Journal of Labelled Compounds in 1971 | CAS: 1193-74-4

4,5-Dimethylpyrimidin-2-amine (cas: 1193-74-4) belongs to pyrimidine derivatives. Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine. For example, the neurotoxin tetrodotoxin is a pyrimidine derivative. It is found in a number of species including the Japanese puffer fish, the blue-ringed octopus, and the orange-bellied newt. Tetrodotoxin prevents the transmission of nerve signals and can result in paralysis and death.Electric Literature of C6H9N3

Detection of active groups in alkylpyrimidines. Study of the mobility of hydrogen by hydrogen-deuterium isotope exchange. I. Qualitative kinetics was written by Dizabo, Pierre;Monier, Jean C.;Pompon, Alain. And the article was included in Journal of Labelled Compounds in 1971.Electric Literature of C6H9N3 This article mentions the following:

Me groups bound to heterocyclic rings exchange H for D. This exchange is studied for alkyl or aminoalkylpyrimidines in acid. The qual. results obtained as a function of acidity, substituent location, and temperature confirm the reaction mechanism proposed by Brown except in the case of 2-amino-4,6-dimethylpyrimidine. In the experiment, the researchers used many compounds, for example, 4,5-Dimethylpyrimidin-2-amine (cas: 1193-74-4Electric Literature of C6H9N3).

4,5-Dimethylpyrimidin-2-amine (cas: 1193-74-4) belongs to pyrimidine derivatives. Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine. For example, the neurotoxin tetrodotoxin is a pyrimidine derivative. It is found in a number of species including the Japanese puffer fish, the blue-ringed octopus, and the orange-bellied newt. Tetrodotoxin prevents the transmission of nerve signals and can result in paralysis and death.Electric Literature of C6H9N3

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia