CompoundList
Molecular formula

C18H18INS

2 compounds have this formula on CompoundList.

Molar mass
407.31g/mol
Monoisotopic mass
407.0205Da
Atoms
39
Elements
5
Rings plus double bonds
10

The formula C18H18INS describes a molecule made of 18 carbon atoms, 18 hydrogen atoms, 1 iodine atom, 1 nitrogen 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 × 1853.08%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 184.45%
    1.008 × 18 = 18.144 g/mol
  • I Iodine × 131.16%
    126.9 × 1 = 126.900 g/mol
  • N Nitrogen × 13.44%
    14.007 × 1 = 14.007 g/mol
  • S Sulfur × 17.87%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C18H18INS

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

Showing 1 to 2 of 2 compounds

Frequently asked questions

What is the molar mass of C18H18INS?

The molar mass of C18H18INS is 407.31 g/mol, calculated from standard atomic weights for 18 carbon atoms, 18 hydrogen atoms, 1 iodine atom, 1 nitrogen atom and 1 sulfur atom. The monoisotopic mass is 407.0205 Da.

How many compounds have the formula C18H18INS?

CompoundList lists 2 compounds with the molecular formula C18H18INS, including 3-Ethyl-2-methyl-4,5-diphenyl-1,3-thiazol-3-ium iodide, 3-Ethyl-2-(2-phenylprop-1-en-1-yl)-1,3-benzothiazol-3-ium iodide. 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 C18H18INS?

C18H18INS 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.