CompoundList
Sign in
Molecular formula

C21H16N4

23 compounds have this formula on CompoundList.

Molar mass
324.39g/mol
Monoisotopic mass
324.1375Da
Atoms
41
Elements
3
Rings plus double bonds
16

The formula C21H16N4 describes a molecule made of 21 carbon atoms, 16 hydrogen atoms and 4 nitrogen 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 × 2177.76%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 164.97%
    1.008 × 16 = 16.128 g/mol
  • N Nitrogen × 417.27%
    14.007 × 4 = 56.028 g/mol
Look up another formula

Compounds with the formula C21H16N4

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

Showing 1 to 23 of 23 compounds

4-Phenylamino-2,3-dihydro-1H-4a,9-diaza-cyclopenta[b]fluorene-10-carbonitrile chemical structure, C21H16N4, CAS 305331-92-4
4-Phenylamino-2,3-dihydro-1H-4a,9-diaza-cyclopenta[b]fluorene-10-carbonitrile
CAS 305331-92-4C21H16N4
4-Methyl-1-phenyl-2,3-dihydro-1H-pyrrolo[3',2':5,6]pyrido[1,2-a]benzimidazole-5-carbonitrile chemical structure, C21H16N4, CAS 496970-39-9
4-Methyl-1-phenyl-2,3-dihydro-1H-pyrrolo[3',2':5,6]pyrido[1,2-a]benzimidazole-5-carbonitrile
CAS 496970-39-9C21H16N4
5-Benzyl-6-methyl-4-phenylpyrrolo[3,2-d]pyrimidine-7-carbonitrile chemical structure, C21H16N4, CAS 360062-32-4
5-Benzyl-6-methyl-4-phenylpyrrolo[3,2-d]pyrimidine-7-carbonitrile
CAS 360062-32-4C21H16N4
4-(2-Naphthalen-2-ylethylamino)quinazoline-6-carbonitrile chemical structure, C21H16N4, CAS 1366002-73-4
4-(2-Naphthalen-2-ylethylamino)quinazoline-6-carbonitrile
CAS 1366002-73-4C21H16N4
4-((1~2~,2~2~:2~6~,3~2~-Terpyridin)-2~4~-yl)aniline chemical structure, C21H16N4, CAS 178265-65-1
4-((1~2~,2~2~:2~6~,3~2~-Terpyridin)-2~4~-yl)aniline
CAS 178265-65-1C21H16N4
Pyridine, 2,2',2'',2'''-methanetetrayltetrakis- chemical structure, C21H16N4, CAS 562104-55-6
Pyridine, 2,2',2'',2'''-methanetetrayltetrakis-
CAS 562104-55-6C21H16N4
Tetra(pyridin-4-yl)methane chemical structure, C21H16N4, CAS 946527-61-3
Tetra(pyridin-4-yl)methane
CAS 946527-61-3C21H16N4
4-(4,6-Diphenyl-1,3,5-triazin-2-yl)aniline chemical structure, C21H16N4, CAS 174152-47-7
4-(4,6-Diphenyl-1,3,5-triazin-2-yl)aniline
CAS 174152-47-7C21H16N4
N,4,6-triphenyl-1,3,5-triazin-2-amine chemical structure, C21H16N4, CAS 30369-20-1
N,4,6-triphenyl-1,3,5-triazin-2-amine
CAS 30369-20-1C21H16N4
4H-Imidazol-5-amine, N,2-diphenyl-4-(phenylimino)- chemical structure, C21H16N4, CAS 59800-96-3
4H-Imidazol-5-amine, N,2-diphenyl-4-(phenylimino)-
CAS 59800-96-3C21H16N4
N-[(E)-[Phenyl(pyridin-2-yl)methylidene]amino]quinolin-2-amine chemical structure, C21H16N4, CAS 35896-24-3
N-[(E)-[Phenyl(pyridin-2-yl)methylidene]amino]quinolin-2-amine
CAS 35896-24-3C21H16N4
2-Methyl-3-(4-phenylbenzyl)-3H-imidazo[4,5-b]pyridine-5-carbonitrile chemical structure, C21H16N4, CAS 219762-43-3
2-Methyl-3-(4-phenylbenzyl)-3H-imidazo[4,5-b]pyridine-5-carbonitrile
CAS 219762-43-3C21H16N4
1H-Imidazole, 4,5-diphenyl-2-(phenylazo)- chemical structure, C21H16N4, CAS 34938-51-7
1H-Imidazole, 4,5-diphenyl-2-(phenylazo)-
CAS 34938-51-7C21H16N4
4-(4-(2-Isoindolinyl)phenylazo)benzonitrile chemical structure, C21H16N4, CAS 184778-66-3
4-(4-(2-Isoindolinyl)phenylazo)benzonitrile
CAS 184778-66-3C21H16N4
2-(5,6-Diphenyl-1,2,4-triazin-3-yl)aniline chemical structure, C21H16N4, CAS 89213-58-1
2-(5,6-Diphenyl-1,2,4-triazin-3-yl)aniline
CAS 89213-58-1C21H16N4
1-(Diphenylmethylene)-2-(quinoxalin-6-yl)hydrazine chemical structure, C21H16N4, CAS 1020173-84-5
1-(Diphenylmethylene)-2-(quinoxalin-6-yl)hydrazine
CAS 1020173-84-5C21H16N4
1,5-Diphenyl-4-(phenylazo)-1H-pyrazole chemical structure, C21H16N4, CAS 40640-30-0
1,5-Diphenyl-4-(phenylazo)-1H-pyrazole
CAS 40640-30-0C21H16N4
Benzenamine, N-(1H-indol-3-ylmethylene)-4-(2-phenyldiazenyl)- chemical structure, C21H16N4, CAS 303768-95-8
Benzenamine, N-(1H-indol-3-ylmethylene)-4-(2-phenyldiazenyl)-
CAS 303768-95-8C21H16N4
2-[1-[2-(1-Naphthalenyl)ethyl]-1H-imidazol-4-yl]-4-pyridinecarbonitrile chemical structure, C21H16N4, CAS 1677674-48-4
2-[1-[2-(1-Naphthalenyl)ethyl]-1H-imidazol-4-yl]-4-pyridinecarbonitrile
CAS 1677674-48-4C21H16N4
2-Phenyl-3-[(1H-pyrrolo[2,3-b]pyridin-3-yl)methyl]-1H-pyrrolo[2,3-b]pyridine chemical structure, C21H16N4, CAS 23616-61-7
2-Phenyl-3-[(1H-pyrrolo[2,3-b]pyridin-3-yl)methyl]-1H-pyrrolo[2,3-b]pyridine
CAS 23616-61-7C21H16N4
2,5-Diphenyl-4-(2-phenylhydrazinylidene)-4H-imidazole chemical structure, C21H16N4, CAS 143721-19-1
2,5-Diphenyl-4-(2-phenylhydrazinylidene)-4H-imidazole
CAS 143721-19-1C21H16N4
2,4,6-Tri(pyridin-4-yl)aniline chemical structure, C21H16N4, CAS 2258656-65-2
2,4,6-Tri(pyridin-4-yl)aniline
CAS 2258656-65-2C21H16N4
3-(1H-Indol-3-ylmethyl)-1-pyridin-2-ylimidazo[1,5-a]pyridine chemical structure, C21H16N4, CAS 1610690-50-0
3-(1H-Indol-3-ylmethyl)-1-pyridin-2-ylimidazo[1,5-a]pyridine
CAS 1610690-50-0C21H16N4

Frequently asked questions

What is the molar mass of C21H16N4?

The molar mass of C21H16N4 is 324.39 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms and 4 nitrogen atoms. The monoisotopic mass is 324.1375 Da.

How many compounds have the formula C21H16N4?

CompoundList lists 23 compounds with the molecular formula C21H16N4, including 4-Phenylamino-2,3-dihydro-1H-4a,9-diaza-cyclopenta[b]fluorene-10-carbonitrile, 4-Methyl-1-phenyl-2,3-dihydro-1H-pyrrolo[3',2':5,6]pyrido[1,2-a]benzimidazole-5-carbonitrile, 5-Benzyl-6-methyl-4-phenylpyrrolo[3,2-d]pyrimidine-7-carbonitrile. 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 C21H16N4?

C21H16N4 has a degree of unsaturation of 16. 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.