二氢尿嘧啶，Dihydrouracil [DiHU]；Powder, ≥98%

Dihydrouracil (DiHU) is a minor base found in transfer ribonucleic acid (tRNA). It is similar to uracil with the only exception that the C₅-C₆ bond is saturated. It crystallized in the monoclinic system with space group P2₁/_C. Its crystalline structure has been analyzed.[1] Its generation from L-cysteine and uracil via photochemical addition has been described.[2]

 

Dihydrouracil has been used as a standard for ureido group in the colorimentric assay of transfer ribonucleic acid (tRNA).[3]