C18H21NO Index of chemical compounds with the same molecular formula From Wikipedia, the free encyclopedia The molecular formula C18H21NO (molar mass: 267.36 g/mol, exact mass: 267.1623 u) may refer to: Azacyclonol MBBA (N-(4-Methoxybenzylidene)-4-butylaniline) Pipradrol 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 C18H23NO C17H19NO C18H21NO C19H23NO C18H19NO C18H21N C18H21NO2 C18H20O C18H22N2O Close Related Articles