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Molecular formula

C21H13F2NO

3 compounds have this formula on CompoundList.

Molar mass
333.34g/mol
Monoisotopic mass
333.0965Da
Atoms
38
Elements
5
Rings plus double bonds
15

The formula C21H13F2NO describes a molecule made of 21 carbon atoms, 13 hydrogen atoms, 2 fluorine atoms, 1 nitrogen atom and 1 oxygen atom. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.

Elemental composition

  • C Carbon × 2175.67%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 133.93%
    1.008 × 13 = 13.104 g/mol
  • F Fluorine × 211.40%
    18.998 × 2 = 37.996 g/mol
  • N Nitrogen × 14.20%
    14.007 × 1 = 14.007 g/mol
  • O Oxygen × 14.80%
    15.999 × 1 = 15.999 g/mol
Look up another formula

Compounds with the formula C21H13F2NO

Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.

Showing 1 to 3 of 3 compounds

2-[4-(4-Fluorobenzoyl)phenyl]-2-(4-fluorophenyl)acetonitrile chemical structure, C21H13F2NO, CAS 339115-12-7
2-[4-(4-Fluorobenzoyl)phenyl]-2-(4-fluorophenyl)acetonitrile
CAS 339115-12-7C21H13F2NO
1,1-Bis(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carbonitrile chemical structure, C21H13F2NO, CAS 762266-09-1
1,1-Bis(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carbonitrile
CAS 762266-09-1C21H13F2NO
5,7-Bis(2-fluorophenyl)quinolin-8-ol chemical structure, C21H13F2NO, CAS 648896-58-6
5,7-Bis(2-fluorophenyl)quinolin-8-ol
CAS 648896-58-6C21H13F2NO

Frequently asked questions

What is the molar mass of C21H13F2NO?

The molar mass of C21H13F2NO is 333.34 g/mol, calculated from standard atomic weights for 21 carbon atoms, 13 hydrogen atoms, 2 fluorine atoms, 1 nitrogen atom and 1 oxygen atom. The monoisotopic mass is 333.0965 Da.

How many compounds have the formula C21H13F2NO?

CompoundList lists 3 compounds with the molecular formula C21H13F2NO, including 2-[4-(4-Fluorobenzoyl)phenyl]-2-(4-fluorophenyl)acetonitrile, 1,1-Bis(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carbonitrile, 5,7-Bis(2-fluorophenyl)quinolin-8-ol. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.

What is the degree of unsaturation of C21H13F2NO?

C21H13F2NO has a degree of unsaturation of 15. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.