Ptasinska, Sylwia published the artcileBond- and site-selective loss of H atoms from nucleobases by very-low-energy electrons (< 3 eV), Formula: C5H6N2O2, the publication is Angewandte Chemie, International Edition (2005), 44(42), 6941-6943, database is CAplus and MEDLINE.
When excess charge is deposited on thymine and uracil by resonant attachment of low-energy electrons (0-3 eV), H atoms are cleaved exclusively from the N positions. This bond selectivity can be made site selective (N1 vs. N3 position) by properly tuning the electron energy. This conclusion was drawn from experiments with methylated thymine and uracil (see picture) in crossed beam experiments
Angewandte Chemie, International Edition published new progress about 608-34-4. 608-34-4 belongs to pyrimidines, auxiliary class Pyrimidine,Amide, name is 3-Methylpyrimidine-2,4(1H,3H)-dione, and the molecular formula is C5H6N2O2, Formula: C5H6N2O2.
Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia