CompoundList
Molecular formula

C18H21KO5S

1 compound has this formula on CompoundList.

Molar mass
388.52g/mol
Monoisotopic mass
388.0747Da
Atoms
46
Elements
5

The formula C18H21KO5S describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 1 potassium atom, 5 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 × 1855.65%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 215.45%
    1.008 × 21 = 21.168 g/mol
  • K Potassium × 110.06%
    39.098 × 1 = 39.098 g/mol
  • O Oxygen × 520.59%
    15.999 × 5 = 79.995 g/mol
  • S Sulfur × 18.25%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C18H21KO5S

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

Showing 1 to 1 of 1 compounds

Frequently asked questions

What is the molar mass of C18H21KO5S?

The molar mass of C18H21KO5S is 388.52 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 1 potassium atom, 5 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 388.0747 Da.

How many compounds have the formula C18H21KO5S?

CompoundList lists 1 compound with the molecular formula C18H21KO5S, including Potassium estrone sulfate. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.