You searched for a fragment C12H13N4O3 in MassBank data.
- Page KO009277p → C12H13N4O3: C5H7N4 C4H6N4
- Page KOX00881p → C12H13N4O3: C12H13N4O2*
- Page KOX00881p → C12H13N4O3: C12H13N4O* C11H13N4** C10H11N4*** C8H9N4*** C8H9N2O***
- Page KOX00881p → C12H13N4O3: C5H7N4
- Page KOX00881p → C12H13N4O3: C4H7N4
- Page KOX00881p → C12H13N4O3: C4H6N4 C4H5N2***