C21H27NO3 Index of chemical compounds with the same molecular formula From Wikipedia, the free encyclopedia The molecular formula C21H27NO3 may refer to: Propafenone 25O-NBcP 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 C21H29NO3 C20H25NO3 C21H27NO3 C22H29NO3 C21H25NO3 C21H27NO2 C21H27NO4 C21H26O3 C21H28N2O3 Close Related Articles