C6H9N3O2 Index of chemical compounds with the same molecular formula From Wikipedia, the free encyclopedia The molecular formula C6H9N3O2 (molar mass: 155.15 g/mol, exact mass: 155.0695 u) may refer to: Cupferron Histidine (His or H) This set index page lists chemical structure articles associated with the same molecular formula.If an internal link led you here, you may wish to change the link to point directly to the intended article. More information Related molecular formulas ... Related molecular formulas C6H11N3O2 C5H7N3O2 C6H9N3O2 C7H11N3O2 C6H7N3O2 C6H9N3O C6H9N3O3 C6H8N2O2 C6H10N4O2 Close Related Articles