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Molecular formula

C18H20NO2PS

3 compounds have this formula on CompoundList.

Molar mass
345.40g/mol
Monoisotopic mass
345.0952Da
Atoms
43
Elements
6
Rings plus double bonds
10

The formula C18H20NO2PS describes a molecule made of 18 carbon atoms, 20 hydrogen atoms, 1 nitrogen atom, 2 oxygen atoms, 1 phosphorus atom 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 × 1862.59%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 205.84%
    1.008 × 20 = 20.160 g/mol
  • N Nitrogen × 14.06%
    14.007 × 1 = 14.007 g/mol
  • O Oxygen × 29.26%
    15.999 × 2 = 31.998 g/mol
  • P Phosphorus × 18.97%
    30.974 × 1 = 30.974 g/mol
  • S Sulfur × 19.28%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C18H20NO2PS

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

Showing 1 to 3 of 3 compounds

exo-Phenyl kwon bicyclic phosphine catalyst chemical structure, C18H20NO2PS, CAS 1591861-38-9
exo-Phenyl kwon bicyclic phosphine catalyst
CAS 1591861-38-9C18H20NO2PS
exo-Phenyl kwon [2.2.1] bicyclic phosphine chemical structure, C18H20NO2PS, CAS 1621906-60-2
exo-Phenyl kwon [2.2.1] bicyclic phosphine
CAS 1621906-60-2C18H20NO2PS
S-[(Diphenylphosphanyl)methyl] (2S)-2-acetamidopropanethioate chemical structure, C18H20NO2PS, CAS 905992-17-8
S-[(Diphenylphosphanyl)methyl] (2S)-2-acetamidopropanethioate
CAS 905992-17-8C18H20NO2PS

Frequently asked questions

What is the molar mass of C18H20NO2PS?

The molar mass of C18H20NO2PS is 345.40 g/mol, calculated from standard atomic weights for 18 carbon atoms, 20 hydrogen atoms, 1 nitrogen atom, 2 oxygen atoms, 1 phosphorus atom and 1 sulfur atom. The monoisotopic mass is 345.0952 Da.

How many compounds have the formula C18H20NO2PS?

CompoundList lists 3 compounds with the molecular formula C18H20NO2PS, including exo-Phenyl kwon bicyclic phosphine catalyst, exo-Phenyl kwon [2.2.1] bicyclic phosphine, S-[(Diphenylphosphanyl)methyl] (2S)-2-acetamidopropanethioate. 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 C18H20NO2PS?

C18H20NO2PS has a degree of unsaturation of 10. 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.