CompoundList
Molecular formula

C21H7I4NO5S

2 compounds have this formula on CompoundList.

Molar mass
892.95g/mol
Monoisotopic mass
892.6224Da
Atoms
39
Elements
6
Rings plus double bonds
17

The formula C21H7I4NO5S describes a molecule made of 21 carbon atoms, 7 hydrogen atoms, 4 iodine atoms, 1 nitrogen 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 × 2128.25%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 70.79%
    1.008 × 7 = 7.056 g/mol
  • I Iodine × 456.85%
    126.9 × 4 = 507.600 g/mol
  • N Nitrogen × 11.57%
    14.007 × 1 = 14.007 g/mol
  • O Oxygen × 58.96%
    15.999 × 5 = 79.995 g/mol
  • S Sulfur × 13.59%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C21H7I4NO5S

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 C21H7I4NO5S?

The molar mass of C21H7I4NO5S is 892.95 g/mol, calculated from standard atomic weights for 21 carbon atoms, 7 hydrogen atoms, 4 iodine atoms, 1 nitrogen atom, 5 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 892.6224 Da.

How many compounds have the formula C21H7I4NO5S?

CompoundList lists 2 compounds with the molecular formula C21H7I4NO5S, including Erythrosin B isothiocyanate, isomer II, Erythrosin-5-isothiocyanate. 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 C21H7I4NO5S?

C21H7I4NO5S has a degree of unsaturation of 17. 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.