Formyl 1,3-dimethyl-5,6-diaminouracil

Formyl 1,3-dimethyl-5,6-diaminouracil is a substituted pyrimidine derivative containing a 1,3-dimethylated uracil core with 5,6-diamino functionalities. The formyl group at the 4-position introduces an aldehyde moiety, while the uracil skeleton retains carbonyl groups at positions 2 and 6. This compound is a synthetic byproduct generated during the alkylation of 5,6-diaminouracil precursors in the presence of formaldehyde. It functions as an HPLC reference standard for quantifying impurities in formylated uracil-based pharmaceuticals.