Nemeryuk, Michal P. et al. published their research in Collection of Czechoslovak Chemical Communications in 1986 | CAS: 69785-94-0

5-Aminopyrimidin-4(3H)-one (cas: 69785-94-0) belongs to pyrimidine derivatives. The pyrimidine ring system has wide occurrence in nature as substituted and ring fused compounds and derivatives. 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.Computed Properties of C4H5N3O

Transformations of substituted 5-aminopyrimidines under conditions of diazotization was written by Nemeryuk, Michal P.;Sedov, Andrej L.;Safonova, Tamara S.;Cerny, Antonin;Krepelka, Jiri. And the article was included in Collection of Czechoslovak Chemical Communications in 1986.Computed Properties of C4H5N3O This article mentions the following:

Diazotization of aminopyrimidines I (R = H; R1 = SMe, SCH2Ph, OMe, H, OH; R2 = OMe, Cl, OH, etc.) gave triazoles II (R3 = CO2Me, COSMe, COSCH2Ph, CONH2, etc.). Under similar conditions diaminopyrimidines I [R = NH2, R1 = SCH2C6H4R4-4 (R4 = NO2, CO2Et, CONHCHMe2, H), R2 = Me] gave pyrimidotriazine N-oxides III. In the experiment, the researchers used many compounds, for example, 5-Aminopyrimidin-4(3H)-one (cas: 69785-94-0Computed Properties of C4H5N3O).

5-Aminopyrimidin-4(3H)-one (cas: 69785-94-0) belongs to pyrimidine derivatives. The pyrimidine ring system has wide occurrence in nature as substituted and ring fused compounds and derivatives. 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.Computed Properties of C4H5N3O

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia