Molecular formula
C13H9N3O
112 compounds have this formula on CompoundList.
- Molar mass
- 223.23g/mol
- Monoisotopic mass
- 223.0746Da
- Atoms
- 26
- Elements
- 4
- Rings plus double bonds
- 11
The formula C13H9N3O describes a molecule made of 13 carbon atoms, 9 hydrogen atoms, 3 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 × 1369.95%12.011 × 13 = 156.143 g/mol
- H Hydrogen × 94.06%1.008 × 9 = 9.072 g/mol
- N Nitrogen × 318.82%14.007 × 3 = 42.021 g/mol
- O Oxygen × 17.17%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C13H9N3O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 112 compounds
Phenazine-1-carboxamide
CAS 550-89-0C13H9N3O
2-(Pyridin-4-yl)quinazolin-4-ol
CAS 6484-23-7C13H9N3O
1-Benzoyl-1H-benzotriazole
CAS 4231-62-3C13H9N3O
1,5-Dihydro-3-methyl-1-oxopyrido(1,2-a)benzimidazole-4-carbonitrile
CAS 60792-57-6C13H9N3O
2-(3-Pyridyl)quinazolin-4-one
CAS 50362-93-1C13H9N3O
Diazene, 1-(4-isocyanatophenyl)-2-phenyl-
CAS 321951-62-6C13H9N3O
4-(5-Phenyl-1,3,4-oxadiazol-2-yl)pyridine
CAS 56353-00-5C13H9N3O
4-Hydroxy-2-(2-pyridyl)quinazoline
CAS 28594-60-7C13H9N3O
N-(2-Cyanophenyl)pyridine-2-carboxamide
CAS 304650-02-0C13H9N3O
3-(5-Phenyl-1,3,4-oxadiazol-2-yl)pyridine
CAS 21398-08-3C13H9N3O
4-(5-Phenyl-1,2,4-oxadiazol-3-yl)pyridine
CAS 22926-71-2C13H9N3O
5-Phenyl-3-pyridin-3-yl-1,2,4-oxadiazole
CAS 330656-02-5C13H9N3O
Benzamide, 4-cyano-N-4-pyridinyl-
CAS 113204-29-8C13H9N3O
3-Phenyl-1,2,3-benzotriazin-4(3H)-one
CAS 19263-30-0C13H9N3O
![3-Nitroso-2-phenylimidazo[1,2-a]pyridine chemical structure, C13H9N3O, CAS 3672-37-5](/s/HYFJUZQWWMWFQT-UHFFFAOYSA-N.svg)
3-Nitroso-2-phenylimidazo[1,2-a]pyridine
CAS 3672-37-5C13H9N3O
3-(3-Phenyl-1,2,4-oxadiazol-5-yl)pyridine
CAS 37760-49-9C13H9N3O
2-(5-Phenyl-1,2,4-oxadiazol-3-yl)pyridine
CAS 13389-61-2C13H9N3O
4-(3-Phenyl-1,2,4-oxadiazol-5-yl)pyridine
CAS 4969-62-4C13H9N3O
4-(2-Furyl)-2-(2-pyridinyl)pyrimidine
CAS 135925-75-6C13H9N3O
4-(2-Furyl)-2-(4-pyridinyl)pyrimidine
CAS 866131-62-6C13H9N3O
N-(3-Cyanophenyl)isonicotinamide
CAS 218156-94-6C13H9N3O
4-(4-Cyanophenylazo)phenol
CAS 26029-68-5C13H9N3O
![Pyrido[2,3-b]pyrazin-3(4H)-one, 2-phenyl- chemical structure, C13H9N3O, CAS 142141-45-5](/s/ADPJOVVHLHNXJW-UHFFFAOYSA-N.svg)
Pyrido[2,3-b]pyrazin-3(4H)-one, 2-phenyl-
CAS 142141-45-5C13H9N3O
4-Cyano-N-(pyridin-3-yl)benzamide
CAS 1016869-45-6C13H9N3O
- 2-Pyridin-2-ylphthalazin-1-one307324-42-1C13H9N3O
- N-(3-Cyanophenyl)pyridine-2-carboxamide795284-35-4C13H9N3O
- 2-Phenyl-5-pyridin-2-yl-1,3,4-oxadiazole25433-30-1C13H9N3O
- 2-Phenylpyrido[2,3-d]pyrimidin-4(3H)-one16081-87-1C13H9N3O
- 2-(Pyridine-4-carbonyl)-1H-1,3-benzodiazole85330-46-7C13H9N3O
- 2-Phenylimidazo[1,2-a]pyrimidine-3-carbaldehyde74944-29-9C13H9N3O
- 2-(4-Pyridinyl)-1,7-naphthyridin-5-ol552331-82-5C13H9N3O
- 5-(2-Cyano-4-hydroxyphenyl)-1-methyl-1H-pyrrole-2-carbonitrile2111835-00-6C13H9N3O
- 3-Pyridin-2-ylquinoxalin-2(1H)-one7755-93-3C13H9N3O
- N-(2-Cyanophenyl)pyridine-3-carboxamide461418-85-9C13H9N3O
- N-(3-Cyanophenyl)pyridine-3-carboxamide497057-94-0C13H9N3O
- 2-Phenylpyrido[1,2-a][1,3,5]triazin-4-one33957-35-6C13H9N3O
- N-(3-Cyanopyridin-2-yl)benzamide112084-93-2C13H9N3O
- 2-(1H-1,2,3-Benzotriazol-1-yl)benzaldehyde138479-57-9C13H9N3O
- N-(4-Cyanophenyl)picolinamide126222-22-8C13H9N3O
- 4-Azidobenzophenone36210-71-6C13H9N3O
- 5-Phenylpyrido[2,3-d]pyridazin-8(7H)-one87988-03-2C13H9N3O
- Agn-PC-0NI38V16714-27-5C13H9N3O
- Imidazo[1,2-a]pyrazin-3-yl(phenyl)methanone90734-76-2C13H9N3O
- 2-[(5-Methoxy-1H-indol-3-yl)methylene]malononitrile771574-78-8C13H9N3O
- 3-Phenylpyrazolo[1,5-a]pyrimidine-6-carbaldehyde1160264-05-0C13H9N3O
- 3-(2-Oxo-2-pyridin-4-yl-ethyl)isonicotinonitrile1071017-66-7C13H9N3O
- Phenylpyrazolo[1,5-a]pyrimidin-3-yl-methanone115955-49-2C13H9N3O
- Phenazine-2-carboxamide18644-21-8C13H9N3O
- 4-Pyridin-2-yl-1H-quinazolin-2-one34790-37-9C13H9N3O
- 2-(Pyridin-4-yl)-1H-benzimidazole-6-carbaldehyde308362-19-8C13H9N3O
- 3-(Pyridin-4-yl)-2,6-naphthyridin-1(2H)-one1246764-22-6C13H9N3O
- 6-(4-Pyridyl)-1H-1,8-naphthyridin-2-one61018-78-8C13H9N3O
- 1H-1,2,3-Benzotriazol-5-yl(phenyl)methanone107508-46-3C13H9N3O
- 1-Hydroxy-4-(2-pyridyl)phthalazine136610-31-6C13H9N3O
- 4-Imidazo[1,2-a]pyrimidin-2-ylbenzaldehyde118001-70-0C13H9N3O
- 3-(2-Pyridinyl)-4(3H)-quinazolinone91804-58-9C13H9N3O
- [3-(1-Benzofuran-2-yl)-1H-pyrazol-5-yl]acetonitrile134161-77-6C13H9N3O
- 2-Amino-4-(furan-2-yl)-6-methylbenzene-1,3-dicarbonitrile219616-98-5C13H9N3O
- 2-(Furan-2-yl)-5-(pyridin-4-yl)pyrazine259807-63-1C13H9N3O
- 3-Cyano-N-(pyridin-2-yl)benzamide1016857-70-7C13H9N3O
- 3-Cyano-N-(pyridin-3-yl)benzamide1016809-18-9C13H9N3O
- 8-(4-Pyridinyl)-1,5-naphthyridin-2-ol1092650-92-4C13H9N3O
- 6-(Pyridin-3-yl)imidazo[1,2-a]pyridine-3-carbaldehyde1304017-50-2C13H9N3O
- Pyrido[3,2-d]pyrimidin-4(3H)-one, 2-phenyl-3295-26-9C13H9N3O
- 2-[(2-Hydroxy-1-methyl-1H-indol-3-yl)methylidene]propanedinitrile2863676-83-7C13H9N3O
- 2-(Furan-2-yl)-5H-[1,2,4]triazolo[5,1-a]isoindole79036-21-8C13H9N3O
- 8-Phenylpyrido[3,4-d]pyridazin-5(6H)-one116776-21-7C13H9N3O
- 3-Nitroso-2-phenylpyrazolo[1,5-a]pyridine122001-19-8C13H9N3O
- 3-(1H-Imidazol-1-yl)-1-isoquinolinecarboxaldehyde1100987-20-9C13H9N3O
- Benzamide,N-(4-cyano-2-pyridinyl)-865815-47-0C13H9N3O
- 2-Phenylpyrazolo[1,5-a]pyrimidine-3-carbaldehyde1466131-14-5C13H9N3O
- 6-(Pyridin-4-yl)imidazo[1,2-a]pyridine-3-carbaldehyde1304017-51-3C13H9N3O
- 1,3-Dihydro-3-(2-pyrazinylmethylene)-2H-indol-2-one885954-15-4C13H9N3O
- 2-Phenyl[1,2,4]triazolo[1,5-a]pyridine-6-carboxaldehyde65966-17-8C13H9N3O
- 4-Phenylpyrido[2,3-d]pyrimidin-2(1H)-one28721-30-4C13H9N3O
- N-(3-Ethynylphenyl)pyrazine-2-carboxamide949841-56-9C13H9N3O
- 5-(5-Pyrimidinyl)-1H-indole-3-carbaldehyde893734-32-2C13H9N3O
- 3-Phenylpyrido[2,3-b]pyrazin-2(1H)-one439148-46-6C13H9N3O
- 2-(3-Pyridinyl)-1,8-naphthyridin-3-ol863786-17-8C13H9N3O
- 1-Oxo-2-(pyridin-3-yl)-1lambda~5~-quinoxaline922525-13-1C13H9N3O
- 5-(5-Quinolinyl)-2(1H)-pyrazinone1021918-54-6C13H9N3O
- 5-(2-Cyanophenyl)nicotinamide1346691-51-7C13H9N3O
- 5-(3-Cyanophenyl)nicotinamide1346691-56-2C13H9N3O
- 5-(4-Cyanophenyl)nicotinamide1346691-59-5C13H9N3O
- 8-(3-Pyridinyl)-1,5-naphthyridin-2(1H)-one1619897-91-4C13H9N3O
- 1-(3-{Furo[3,2-c]pyridin-4-yl}prop-2-yn-1-yl)-1H-pyrazole2098091-81-5C13H9N3O
- 1-(3-{Furo[3,2-c]pyridin-4-yl}prop-2-yn-1-yl)-1H-imidazole2098116-00-6C13H9N3O
- 6-(4-Pyridinyl)-8-quinazolinol1777863-92-9C13H9N3O
- Benzo[f]quinoxaline-5-carbonitrile, 2,3,4,6-tetrahydro-6-oxo-93297-38-2C13H9N3O
- 5-(Quinoxalin-2-yl)pyridin-3-ol2929854-45-3C13H9N3O
- 2-(Pyridin-4-yl)-1,7-naphthyridin-4-ol2489629-99-2C13H9N3O
- 2-(Pyridin-2-yl)cinnolin-2-ium-4-olate108697-54-7C13H9N3O
- 7-Phenylpyrido[2,3-d]pyrimidin-4(1H)-one108677-48-1C13H9N3O
- 2-{Pyrazolo[1,5-a]pyrimidin-3-yl}benzaldehyde2137680-65-8C13H9N3O
- 7-Oxo-5-phenyl-7lambda~5~-pyrido[2,3-d]pyridazine87987-98-2C13H9N3O
- 6-Oxo-5-phenyl-6lambda~5~-pyrido[2,3-d]pyridazine87988-00-9C13H9N3O
- 6-(Pyridin-4-yl)-1,7-naphthyridin-8(7H)-one922527-22-8C13H9N3O
- 2-Pyridin-2-yl-1H-1,8-naphthyridin-4-one1330533-05-5C13H9N3O
- N-(6-Cyanopyridin-2-yl)benzamide1260761-55-4C13H9N3O
- (1-Acetyl-1,2-dihydro-3H-indol-3-ylidene)propanedinitrile139994-93-7C13H9N3O
Frequently asked questions
What is the molar mass of C13H9N3O?
The molar mass of C13H9N3O is 223.23 g/mol, calculated from standard atomic weights for 13 carbon atoms, 9 hydrogen atoms, 3 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 223.0746 Da.
How many compounds have the formula C13H9N3O?
CompoundList lists 112 compounds with the molecular formula C13H9N3O, including Phenazine-1-carboxamide, 2-(Pyridin-4-yl)quinazolin-4-ol, 1-Benzoyl-1H-benzotriazole. 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 C13H9N3O?
C13H9N3O has a degree of unsaturation of 11. 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.