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Molecular formula

C21H15N5O

24 compounds have this formula on CompoundList.

Molar mass
353.38g/mol
Monoisotopic mass
353.1277Da
Atoms
42
Elements
4
Rings plus double bonds
17

The formula C21H15N5O describes a molecule made of 21 carbon atoms, 15 hydrogen atoms, 5 nitrogen atoms and 1 oxygen 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 × 2171.38%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 154.28%
    1.008 × 15 = 15.120 g/mol
  • N Nitrogen × 519.82%
    14.007 × 5 = 70.035 g/mol
  • O Oxygen × 14.53%
    15.999 × 1 = 15.999 g/mol
Look up another formula

Compounds with the formula C21H15N5O

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

Showing 1 to 24 of 24 compounds

5-[(2-Pyridinylmethyl)amino]-8H-phthalazino[1,2-b]quinazolin-8-one chemical structure, C21H15N5O, CAS 496025-24-2
5-[(2-Pyridinylmethyl)amino]-8H-phthalazino[1,2-b]quinazolin-8-one
CAS 496025-24-2C21H15N5O
N-(4-(1H-Imidazo(4,5-B)phenazin-2-yl)phenyl)acetamide chemical structure, C21H15N5O, CAS 114992-02-8
N-(4-(1H-Imidazo(4,5-B)phenazin-2-yl)phenyl)acetamide
CAS 114992-02-8C21H15N5O
N-[6-(1H-Indol-4-yl)-1H-indazol-4-yl]-2-pyridinecarboxamide chemical structure, C21H15N5O, CAS 1199244-53-5
N-[6-(1H-Indol-4-yl)-1H-indazol-4-yl]-2-pyridinecarboxamide
CAS 1199244-53-5C21H15N5O
5-(6-Phenyl-[1,2,4]triazolo[4,3-b]pyridazin-3-ylmethyl)-2H-isoquinolin-1-one chemical structure, C21H15N5O, CAS 1350612-75-7
5-(6-Phenyl-[1,2,4]triazolo[4,3-b]pyridazin-3-ylmethyl)-2H-isoquinolin-1-one
CAS 1350612-75-7C21H15N5O
2-[8-[4-(1-Methylpyrazol-4-yl)phenyl]-1,6-naphthyridin-2-yl]-1,3-oxazole chemical structure, C21H15N5O, CAS 1860885-75-1
2-[8-[4-(1-Methylpyrazol-4-yl)phenyl]-1,6-naphthyridin-2-yl]-1,3-oxazole
CAS 1860885-75-1C21H15N5O
6-(4-Methoxyphenyl)-3-pyridin-4-yl-[1,2,4]triazolo[3,4-a]phthalazine chemical structure, C21H15N5O, CAS 727675-43-6
6-(4-Methoxyphenyl)-3-pyridin-4-yl-[1,2,4]triazolo[3,4-a]phthalazine
CAS 727675-43-6C21H15N5O
2-(4-Pyridinyl)-N'-(3-pyridinylmethylene)-4-quinolinecarbohydrazide chemical structure, C21H15N5O, CAS 402851-43-8
2-(4-Pyridinyl)-N'-(3-pyridinylmethylene)-4-quinolinecarbohydrazide
CAS 402851-43-8C21H15N5O
2-(4-Pyridinyl)-N'-(4-pyridinylmethylene)-4-quinolinecarbohydrazide chemical structure, C21H15N5O, CAS 402852-72-6
2-(4-Pyridinyl)-N'-(4-pyridinylmethylene)-4-quinolinecarbohydrazide
CAS 402852-72-6C21H15N5O
3-(4-((1H-Indazol-5-yl)amino)quinazolin-2-yl)phenol chemical structure, C21H15N5O, CAS 2988752-04-9
3-(4-((1H-Indazol-5-yl)amino)quinazolin-2-yl)phenol
CAS 2988752-04-9C21H15N5O
Phenyl 4-[2-(1H-pyrrol-1-yl)[1,2,4]triazolo[1,5-a]pyrimidin-7-yl]phenyl ether chemical structure, C21H15N5O, CAS 303146-08-9
Phenyl 4-[2-(1H-pyrrol-1-yl)[1,2,4]triazolo[1,5-a]pyrimidin-7-yl]phenyl ether
CAS 303146-08-9C21H15N5O
8-(3-Pyridinylmethoxy)-2-(1,2,4-triazolo[4,3-a]pyridin-3-yl)quinoline chemical structure, C21H15N5O, CAS 1209779-23-6
8-(3-Pyridinylmethoxy)-2-(1,2,4-triazolo[4,3-a]pyridin-3-yl)quinoline
CAS 1209779-23-6C21H15N5O
8-(4-Pyridinylmethoxy)-2-(1,2,4-triazolo[4,3-a]pyridin-3-yl)quinoline chemical structure, C21H15N5O, CAS 1209779-24-7
8-(4-Pyridinylmethoxy)-2-(1,2,4-triazolo[4,3-a]pyridin-3-yl)quinoline
CAS 1209779-24-7C21H15N5O
N-(9H-Fluoren-2-yl)-2-phenyl-2H-tetrazole-5-carboxamide chemical structure, C21H15N5O, CAS 1396877-86-3
N-(9H-Fluoren-2-yl)-2-phenyl-2H-tetrazole-5-carboxamide
CAS 1396877-86-3C21H15N5O
7-Benzyl-2-phenylpyrido[3,4-e][1,2,4]triazolo[1,5-a]pyrimidin-6(7H)-one chemical structure, C21H15N5O, CAS 932209-04-6
7-Benzyl-2-phenylpyrido[3,4-e][1,2,4]triazolo[1,5-a]pyrimidin-6(7H)-one
CAS 932209-04-6C21H15N5O
2-Methyl-3,7-diphenylpyrazolo[5,1-c]pyrido[4,3-e][1,2,4]triazin-6(7H)-one chemical structure, C21H15N5O, CAS 1015595-60-4
2-Methyl-3,7-diphenylpyrazolo[5,1-c]pyrido[4,3-e][1,2,4]triazin-6(7H)-one
CAS 1015595-60-4C21H15N5O
N-(9H-Fluoren-2-yl)-6-(1H-pyrazol-1-yl)pyridazine-3-carboxamide chemical structure, C21H15N5O, CAS 1351618-50-2
N-(9H-Fluoren-2-yl)-6-(1H-pyrazol-1-yl)pyridazine-3-carboxamide
CAS 1351618-50-2C21H15N5O
2-Methyl-3-phenyl-7-(pyridin-2-yl)pyrazolo[1,5-a]pyrido[3,4-e]pyrimidin-6(7H)-one chemical structure, C21H15N5O, CAS 1081134-76-0
2-Methyl-3-phenyl-7-(pyridin-2-yl)pyrazolo[1,5-a]pyrido[3,4-e]pyrimidin-6(7H)-one
CAS 1081134-76-0C21H15N5O
2-Quinoxalinecarboxamide, N-[4-(2-phenyldiazenyl)phenyl]- chemical structure, C21H15N5O, CAS 1014210-02-6
2-Quinoxalinecarboxamide, N-[4-(2-phenyldiazenyl)phenyl]-
CAS 1014210-02-6C21H15N5O
3-[3-[3-(1H-Pyrazol-1-yl)phenyl]imidazo[1,2-b]pyridazin-7-yl]phenol chemical structure, C21H15N5O, CAS 1107654-67-0
3-[3-[3-(1H-Pyrazol-1-yl)phenyl]imidazo[1,2-b]pyridazin-7-yl]phenol
CAS 1107654-67-0C21H15N5O
5-[2-(5-Methyl-furan-2-yl)-[1,8]naphthyridin-4-yl]-[2,6]naphthyridin-1-ylamine chemical structure, C21H15N5O, CAS 1353968-57-6
5-[2-(5-Methyl-furan-2-yl)-[1,8]naphthyridin-4-yl]-[2,6]naphthyridin-1-ylamine
CAS 1353968-57-6C21H15N5O
6-(6-Acetyl-2-pyridinyl)-2-(6-methyl-2-pyridinyl)-2H-indazole-4-carbonitrile chemical structure, C21H15N5O, CAS 1864771-47-0
6-(6-Acetyl-2-pyridinyl)-2-(6-methyl-2-pyridinyl)-2H-indazole-4-carbonitrile
CAS 1864771-47-0C21H15N5O
6-(6-Acetyl-2-pyridinyl)-1-(6-methyl-2-pyridinyl)-1H-indazole-4-carbonitrile chemical structure, C21H15N5O, CAS 1864771-45-8
6-(6-Acetyl-2-pyridinyl)-1-(6-methyl-2-pyridinyl)-1H-indazole-4-carbonitrile
CAS 1864771-45-8C21H15N5O
3-(1-(Naphthalen-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-6-ylamino)phenol chemical structure, C21H15N5O, CAS 1044496-84-5
3-(1-(Naphthalen-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-6-ylamino)phenol
CAS 1044496-84-5C21H15N5O
4-(1-(Naphthalen-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-6-ylamino)phenol chemical structure, C21H15N5O, CAS 1044496-91-4
4-(1-(Naphthalen-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-6-ylamino)phenol
CAS 1044496-91-4C21H15N5O

Frequently asked questions

What is the molar mass of C21H15N5O?

The molar mass of C21H15N5O is 353.38 g/mol, calculated from standard atomic weights for 21 carbon atoms, 15 hydrogen atoms, 5 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 353.1277 Da.

How many compounds have the formula C21H15N5O?

CompoundList lists 24 compounds with the molecular formula C21H15N5O, including 5-[(2-Pyridinylmethyl)amino]-8H-phthalazino[1,2-b]quinazolin-8-one, N-(4-(1H-Imidazo(4,5-B)phenazin-2-yl)phenyl)acetamide, N-[6-(1H-Indol-4-yl)-1H-indazol-4-yl]-2-pyridinecarboxamide. 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 C21H15N5O?

C21H15N5O 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.