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Molecular formula

C21H21N3O15S4

2 compounds have this formula on CompoundList.

Molar mass
683.64g/mol
Monoisotopic mass
682.9856Da
Atoms
64
Elements
5
Rings plus double bonds
13

The formula C21H21N3O15S4 describes a molecule made of 21 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms, 15 oxygen atoms and 4 sulfur atoms. 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 × 2136.90%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 213.10%
    1.008 × 21 = 21.168 g/mol
  • N Nitrogen × 36.15%
    14.007 × 3 = 42.021 g/mol
  • O Oxygen × 1535.10%
    15.999 × 15 = 239.985 g/mol
  • S Sulfur × 418.76%
    32.06 × 4 = 128.240 g/mol
Look up another formula

Compounds with the formula C21H21N3O15S4

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

Showing 1 to 2 of 2 compounds

5-(Acetylamino)-4-hydroxy-3-(2-(2-methoxy-5-((2-(sulfooxy)ethyl)sulfonyl)phenyl)diazenyl)-2,7-naphthalenedisulfonic acid chemical structure, C21H21N3O15S4, CAS 10116-15-1
5-(Acetylamino)-4-hydroxy-3-(2-(2-methoxy-5-((2-(sulfooxy)ethyl)sulfonyl)phenyl)diazenyl)-2,7-naphthalenedisulfonic acid
CAS 10116-15-1C21H21N3O15S4
5-(Acetylamino)-4-hydroxy-3-((4-methoxy-3-((2-(sulphooxy)ethyl)sulphonyl)phenyl)azo)naphthalene-2,7-disulphonic acid chemical structure, C21H21N3O15S4, CAS 23622-54-0
5-(Acetylamino)-4-hydroxy-3-((4-methoxy-3-((2-(sulphooxy)ethyl)sulphonyl)phenyl)azo)naphthalene-2,7-disulphonic acid
CAS 23622-54-0C21H21N3O15S4

Frequently asked questions

What is the molar mass of C21H21N3O15S4?

The molar mass of C21H21N3O15S4 is 683.64 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms, 15 oxygen atoms and 4 sulfur atoms. The monoisotopic mass is 682.9856 Da.

How many compounds have the formula C21H21N3O15S4?

CompoundList lists 2 compounds with the molecular formula C21H21N3O15S4, including 5-(Acetylamino)-4-hydroxy-3-(2-(2-methoxy-5-((2-(sulfooxy)ethyl)sulfonyl)phenyl)diazenyl)-2,7-naphthalenedisulfonic acid, 5-(Acetylamino)-4-hydroxy-3-((4-methoxy-3-((2-(sulphooxy)ethyl)sulphonyl)phenyl)azo)naphthalene-2,7-disulphonic acid. 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 C21H21N3O15S4?

C21H21N3O15S4 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.