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Molecular formula

C18H19N5O

213 compounds have this formula on CompoundList.

Molar mass
321.38g/mol
Monoisotopic mass
321.1590Da
Atoms
43
Elements
4
Rings plus double bonds
12

The formula C18H19N5O describes a molecule made of 18 carbon atoms, 19 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 × 1867.27%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 195.96%
    1.008 × 19 = 19.152 g/mol
  • N Nitrogen × 521.79%
    14.007 × 5 = 70.035 g/mol
  • O Oxygen × 14.98%
    15.999 × 1 = 15.999 g/mol
Look up another formula

Compounds with the formula C18H19N5O

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

Showing 201 to 213 of 213 compounds

(S)-5-(Amino(1-(bicyclo[1.1.1]pentan-1-yl)-1H-1,2,3-triazol-4-yl)methyl)-2-methylisoquinolin-1(2H)-one chemical structure, C18H19N5O, CAS 2714373-26-7
(S)-5-(Amino(1-(bicyclo[1.1.1]pentan-1-yl)-1H-1,2,3-triazol-4-yl)methyl)-2-methylisoquinolin-1(2H)-one
CAS 2714373-26-7C18H19N5O
2-[4-(5-Cyclopropyl-1,3,4-oxadiazol-2-yl)piperidin-1-yl]quinoxaline chemical structure, C18H19N5O, CAS 2741940-26-9
2-[4-(5-Cyclopropyl-1,3,4-oxadiazol-2-yl)piperidin-1-yl]quinoxaline
CAS 2741940-26-9C18H19N5O
1,3,5-Trimethyl-4-{6H,7H,8H,9H-pyrido[2,3-b]1,6-naphthyridine-7-carbonyl}-1H-pyrazole chemical structure, C18H19N5O, CAS 2742027-85-4
1,3,5-Trimethyl-4-{6H,7H,8H,9H-pyrido[2,3-b]1,6-naphthyridine-7-carbonyl}-1H-pyrazole
CAS 2742027-85-4C18H19N5O
2-{3-[(Pyrazin-2-yloxy)methyl]piperidin-1-yl}quinoxaline chemical structure, C18H19N5O, CAS 2770636-02-5
2-{3-[(Pyrazin-2-yloxy)methyl]piperidin-1-yl}quinoxaline
CAS 2770636-02-5C18H19N5O
4-{3-[(Pyrazin-2-yloxy)methyl]piperidin-1-yl}quinazoline chemical structure, C18H19N5O, CAS 2770580-95-3
4-{3-[(Pyrazin-2-yloxy)methyl]piperidin-1-yl}quinazoline
CAS 2770580-95-3C18H19N5O
1-[3-(1-Methyl-1H-pyrazol-4-yl)-6H,7H,8H,9H-pyrido[2,3-b]1,6-naphthyridin-7-yl]propan-1-one chemical structure, C18H19N5O, CAS 2770612-03-6
1-[3-(1-Methyl-1H-pyrazol-4-yl)-6H,7H,8H,9H-pyrido[2,3-b]1,6-naphthyridin-7-yl]propan-1-one
CAS 2770612-03-6C18H19N5O
6-(2,3-Dihydro-1H-indol-1-yl)-9-[(oxolan-2-yl)methyl]-9H-purine chemical structure, C18H19N5O, CAS 2770603-08-0
6-(2,3-Dihydro-1H-indol-1-yl)-9-[(oxolan-2-yl)methyl]-9H-purine
CAS 2770603-08-0C18H19N5O
3-[(1-{2-Cyclopropylpyrazolo[1,5-a]pyrazin-4-yl}azetidin-3-yl)methoxy]pyridine chemical structure, C18H19N5O, CAS 2770612-94-5
3-[(1-{2-Cyclopropylpyrazolo[1,5-a]pyrazin-4-yl}azetidin-3-yl)methoxy]pyridine
CAS 2770612-94-5C18H19N5O
rel-(6aR,9aS)-5,6a,7,8,9,9a-Hexahydro-5-methyl-2-(phenylmethyl)cyclopent[4,5]imidazo[2,1-b]purin-4(1H)-one chemical structure, C18H19N5O, CAS 167298-71-7
rel-(6aR,9aS)-5,6a,7,8,9,9a-Hexahydro-5-methyl-2-(phenylmethyl)cyclopent[4,5]imidazo[2,1-b]purin-4(1H)-one
CAS 167298-71-7C18H19N5O
4-Methyl-5-(2-((3-phenylpropyl)amino)pyridin-4-yl)-4H-1,2,4-triazole-3-carbaldehyde chemical structure, C18H19N5O, CAS 865815-17-4
4-Methyl-5-(2-((3-phenylpropyl)amino)pyridin-4-yl)-4H-1,2,4-triazole-3-carbaldehyde
CAS 865815-17-4C18H19N5O
N-Cyclopropyl-N-(1-{furo[3,2-c]pyridin-4-yl}pyrrolidin-3-yl)pyrimidin-4-amine chemical structure, C18H19N5O, CAS 3030818-51-7
N-Cyclopropyl-N-(1-{furo[3,2-c]pyridin-4-yl}pyrrolidin-3-yl)pyrimidin-4-amine
CAS 3030818-51-7C18H19N5O
4-[(1-{2-Methylpyrido[3,4-d]pyrimidin-4-yl}pyrrolidin-3-yl)methoxy]pyridine chemical structure, C18H19N5O, CAS 3054597-95-1
4-[(1-{2-Methylpyrido[3,4-d]pyrimidin-4-yl}pyrrolidin-3-yl)methoxy]pyridine
CAS 3054597-95-1C18H19N5O
1-Methyl-N-[1-(4-methylquinolin-2-yl)azetidin-3-yl]-1H-pyrazole-3-carboxamide chemical structure, C18H19N5O, CAS 3054559-58-6
1-Methyl-N-[1-(4-methylquinolin-2-yl)azetidin-3-yl]-1H-pyrazole-3-carboxamide
CAS 3054559-58-6C18H19N5O

Frequently asked questions

What is the molar mass of C18H19N5O?

The molar mass of C18H19N5O is 321.38 g/mol, calculated from standard atomic weights for 18 carbon atoms, 19 hydrogen atoms, 5 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 321.1590 Da.

How many compounds have the formula C18H19N5O?

CompoundList lists 213 compounds with the molecular formula C18H19N5O, including (S)-5-(Amino(1-(bicyclo[1.1.1]pentan-1-yl)-1H-1,2,3-triazol-4-yl)methyl)-2-methylisoquinolin-1(2H)-one, 2-[4-(5-Cyclopropyl-1,3,4-oxadiazol-2-yl)piperidin-1-yl]quinoxaline, 1,3,5-Trimethyl-4-{6H,7H,8H,9H-pyrido[2,3-b]1,6-naphthyridine-7-carbonyl}-1H-pyrazole. 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 C18H19N5O?

C18H19N5O has a degree of unsaturation of 12. 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.