How is Sodium 2,6-dioxo-1,2,3,6-tetrahydropurin-7-ide (CAS: 1196-43-6) typically synthesized?

Sodium 2,6-dioxo-1,2,3,6-tetrahydropurin-7-ide is typically synthesized from 2,6-dioxo-1,2,3,6-tetrahydropurine-7-carboxylic acid using sodium hydroxide in a solution. The reaction involves the deprotonation of the carboxylic acid group, followed by the formation of the corresponding sodium salt. The yield is usually around 85-90%, and the reaction is carried out under mild conditions to ensure high selectivity.