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Molecular formula

C21H17FO3S

2 compounds have this formula on CompoundList.

Molar mass
368.42g/mol
Monoisotopic mass
368.0882Da
Atoms
43
Elements
5
Rings plus double bonds
13

The formula C21H17FO3S describes a molecule made of 21 carbon atoms, 17 hydrogen atoms, 1 fluorine atom, 3 oxygen atoms and 1 sulfur 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 × 2168.46%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 174.65%
    1.008 × 17 = 17.136 g/mol
  • F Fluorine × 15.16%
    18.998 × 1 = 18.998 g/mol
  • O Oxygen × 313.03%
    15.999 × 3 = 47.997 g/mol
  • S Sulfur × 18.70%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C21H17FO3S

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

Showing 1 to 2 of 2 compounds

1-[1,1'-Biphenyl]-4-yl-3-[(4-fluorophenyl)sulfonyl]-1-propanone chemical structure, C21H17FO3S, CAS 868256-21-7
1-[1,1'-Biphenyl]-4-yl-3-[(4-fluorophenyl)sulfonyl]-1-propanone
CAS 868256-21-7C21H17FO3S
1-(4-Fluorophenyl)-3-phenyl-3-(phenylsulfonyl)propan-1-one chemical structure, C21H17FO3S, CAS 327077-93-0
1-(4-Fluorophenyl)-3-phenyl-3-(phenylsulfonyl)propan-1-one
CAS 327077-93-0C21H17FO3S

Frequently asked questions

What is the molar mass of C21H17FO3S?

The molar mass of C21H17FO3S is 368.42 g/mol, calculated from standard atomic weights for 21 carbon atoms, 17 hydrogen atoms, 1 fluorine atom, 3 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 368.0882 Da.

How many compounds have the formula C21H17FO3S?

CompoundList lists 2 compounds with the molecular formula C21H17FO3S, including 1-[1,1'-Biphenyl]-4-yl-3-[(4-fluorophenyl)sulfonyl]-1-propanone, 1-(4-Fluorophenyl)-3-phenyl-3-(phenylsulfonyl)propan-1-one. 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 C21H17FO3S?

C21H17FO3S has a degree of unsaturation of 13. 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.