Molecular formula
C11H9N3O
313 compounds have this formula on CompoundList.
- Molar mass
- 199.21g/mol
- Monoisotopic mass
- 199.0746Da
- Atoms
- 24
- Elements
- 4
- Rings plus double bonds
- 9
The formula C11H9N3O describes a molecule made of 11 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 × 1166.32%12.011 × 11 = 132.121 g/mol
- H Hydrogen × 94.55%1.008 × 9 = 9.072 g/mol
- N Nitrogen × 321.09%14.007 × 3 = 42.021 g/mol
- O Oxygen × 18.03%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C11H9N3O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 313 compounds
![2-Methyl-4H,5H-pyrazolo[1,5-a]quinazolin-5-one chemical structure, C11H9N3O, CAS 25468-50-2](/s/RFGCWJZOFBNOEK-UHFFFAOYSA-N.svg)
2-Methyl-4H,5H-pyrazolo[1,5-a]quinazolin-5-one
CAS 25468-50-2C11H9N3O
![2-[3-Cyano-4,5,5-trimethylfuran-2(5H)-ylidene]malononitrile chemical structure, C11H9N3O, CAS 171082-32-9](/s/FLMBQNOAWLPZPJ-UHFFFAOYSA-N.svg)
2-[3-Cyano-4,5,5-trimethylfuran-2(5H)-ylidene]malononitrile
CAS 171082-32-9C11H9N3O
Di-2-pyridinylmethanone oxime
CAS 1562-95-4C11H9N3O
2-(Furan-2-yl)-1H-1,3-benzodiazol-5-amine
CAS 37128-74-8C11H9N3O
![2-Methylpyrimido[1,2-a]benzimidazol-4(1H)-one chemical structure, C11H9N3O, CAS 50290-51-2](/s/GGBPUPFQFFGKLR-UHFFFAOYSA-N.svg)
2-Methylpyrimido[1,2-a]benzimidazol-4(1H)-one
CAS 50290-51-2C11H9N3O
N-(3-Pyridyl)nicotinamide
CAS 13160-06-0C11H9N3O
N-(4-Pyridyl)isonicotinamide
CAS 64479-78-3C11H9N3O
5-(Methylamino)-2-phenyl-1,3-oxazole-4-carbonitrile
CAS 53828-02-7C11H9N3O
N-2-Pyridinyl-3-pyridinecarboxamide
CAS 13160-07-1C11H9N3O
2-(1,3-Dihydro-2H-benzimidazol-2-ylidene)-3-oxobutanenitrile
CAS 301312-88-9C11H9N3O
2-Amino-5-oxo-1-phenyl-4,5-dihydro-1H-pyrrole-3-carbonitrile
CAS 124476-77-3C11H9N3O
2-(3-(2-Methylphenyl)-1,2,4-oxadiazol-5-yl)acetonitrile
CAS 851208-00-9C11H9N3O
![7-(Furan-2-yl)-2-methylpyrazolo[1,5-a]pyrimidine chemical structure, C11H9N3O, CAS 186956-76-3](/s/SFAFADYVDKLELO-UHFFFAOYSA-N.svg)
7-(Furan-2-yl)-2-methylpyrazolo[1,5-a]pyrimidine
CAS 186956-76-3C11H9N3O
3-(4-Oxoquinazolin-3(4H)-yl)propanenitrile
CAS 7455-91-6C11H9N3O
2-(3-(4-Methylphenyl)-1,2,4-oxadiazol-5-yl)acetonitrile
CAS 58599-00-1C11H9N3O
2-(Furan-2-yl)imidazo(1,2-a)pyridin-3-amine
CAS 392663-69-3C11H9N3O
![8-Methyl-3H,4H,5H-pyridazino[4,5-b]indol-4-one chemical structure, C11H9N3O, CAS 79652-37-2](/s/VBWJMUHVGCOFHX-UHFFFAOYSA-N.svg)
8-Methyl-3H,4H,5H-pyridazino[4,5-b]indol-4-one
CAS 79652-37-2C11H9N3O
5-Amino-2-benzyl-1,3-oxazole-4-carbonitrile
CAS 887748-74-5C11H9N3O
![2-(5-Methyl-4-isoxazolyl)imidazo[1,2-a]pyridine chemical structure, C11H9N3O, CAS 478245-86-2](/s/WJWBBLLJYULSCU-UHFFFAOYSA-N.svg)
2-(5-Methyl-4-isoxazolyl)imidazo[1,2-a]pyridine
CAS 478245-86-2C11H9N3O
![2-(1H-Benzo[d]imidazol-2(3H)-ylidene)-3-oxobutanenitrile chemical structure, C11H9N3O, CAS 301344-08-1](/s/SZBFQHSARXPZMF-BQYQJAHWSA-N.svg)
2-(1H-Benzo[d]imidazol-2(3H)-ylidene)-3-oxobutanenitrile
CAS 301344-08-1C11H9N3O
4-Methoxy-2-(1H-pyrazol-1-yl)benzonitrile
CAS 1200536-22-6C11H9N3O
4-(5-Methyl-2-oxo-2,3-dihydro-1H-imidazol-1-yl)benzonitrile
CAS 1197629-00-7C11H9N3O
3-(5-Methyl-2-oxo-2,3-dihydro-1H-imidazol-1-yl)benzonitrile
CAS 1197714-21-8C11H9N3O
4-Pyridylnicotinamide
CAS 64479-79-4C11H9N3O
- 3-(2-Oxo-1(2H)-quinoxalinyl)propanenitrile27219-40-5C11H9N3O
- N-(Pyridin-3-yl)pyridine-4-carboxamide39642-69-8C11H9N3O
- 7-Methyl-1,2-dihydropyrazolo[3,4-f]quinolin-9-one144588-48-7C11H9N3O
- 5-Methyl[1,2,4]triazolo[4,3-a]quinolin-1(2H)-one41493-62-3C11H9N3O
- 4H-Pyridazino(4,5-b)indol-4-one, 3,5-dihydro-5-methyl-73918-69-1C11H9N3O
- 2-(2-Aminopyrimidin-5-yl)benzaldehyde914349-52-3C11H9N3O
- N-(Pyridin-2-yl)isonicotinamide59898-94-1C11H9N3O
- 4-Methyl-2H-[1,2,4]triazino[4,5-a]indol-1-one37574-74-6C11H9N3O
- N-(Pyridin-3-yl)picolinamide184870-10-8C11H9N3O
- 9-Hydroxy-3-methylimidazo(4,5-f)quinoline90279-19-9C11H9N3O
- Benzamide, N-2-pyrimidinyl-13053-89-9C11H9N3O
- N-Nitroso-N-phenyl-2-pyridinamine6631-38-5C11H9N3O
- 2-(5-Methyl-1,3,4-oxadiazol-2-yl)-1H-indole37574-80-4C11H9N3O
- (1-Acetyl-1H-benzimidazol-2-yl)acetonitrile88482-10-4C11H9N3O
- N-(Pyridin-4-yl)pyridine-2-carboxamide1089198-59-3C11H9N3O
- N-(Pyrimidin-5-Yl)benzamide103854-65-5C11H9N3O
- 3-(5-Methyl-1,3,4-oxadiazol-2-yl)-1H-indole82380-65-2C11H9N3O
- (2-Amino-4-pyrimidinyl)(phenyl)methanone400085-91-8C11H9N3O
- 2-(Pyrimidin-2-ylamino)benzaldehyde904895-61-0C11H9N3O
- 2-(3-Methyl-1,2,4-oxadiazol-5-yl)-1H-indole1239735-68-2C11H9N3O
- 6-[2-(Pyridin-2-yl)hydrazinylidene]cyclohexa-2,4-dien-1-one10335-29-2C11H9N3O
- 8-Methyl-3,5-dihydro-4H-pyrimido[5,4-b]indol-4-one296264-35-2C11H9N3O
- 2-(1-Amino-2-phenoxyethylidene)malononitrile118645-79-7C11H9N3O
- 1-Methyl-1H-[1,2]diazepino[4,5,6-cd]indol-6(5H)-one65923-22-0C11H9N3O
- 2-((Furan-2-ylmethyl)amino)nicotinonitrile945347-58-0C11H9N3O
- 1-Methylimidazo[1,5-a]quinoxalin-4(5H)-one134485-89-5C11H9N3O
- Pyrazinecarboxanilide34067-83-9C11H9N3O
- 2-Anilinopyrimidine-5-carbaldehyde1080028-75-6C11H9N3O
- 2-(2,3-Dihydro-1H-1,3-benzodiazol-2-ylidene)-3-oxobutanenitrileC11H9N3O
- 4-Methoxy-5H-pyrimido[5,4-b]indole98792-05-3C11H9N3O
- 1-Acetyl-6-methyl-1H-indazole-3-carbonitrile1788043-95-7C11H9N3O
- 4-[2-(Pyridin-4-yl)hydrazinylidene]cyclohexa-2,5-dien-1-one20815-66-1C11H9N3O
- 2-Amino-3H-indeno[2,1-D]pyrimidin-4(9H)-one1126602-49-0C11H9N3O
- N-(Pyrazin-2-yl)benzamide87814-40-2C11H9N3O
- 3-Methyl-2-hydroxy-3H-imidazo[4,5-F]quinoline144486-08-8C11H9N3O
- 2-Anilinopyrimidine-4-carbaldehyde797793-40-9C11H9N3O
- 4-Isocyanato-5-methyl-1-phenyl-1H-pyrazole799283-97-9C11H9N3O
- (3-Amino-pyrazin-2-yl)-phenyl-methanone56414-03-0C11H9N3O
- 2-Methyl-1H-pyrazolo[5,1-b]quinazolin-9-one74336-55-3C11H9N3O
- 2-Phenylpyrimidine-5-carboxamide122773-96-0C11H9N3O
- 3-(1-Benzofuran-2-yl)-1H-pyrazol-5-amine1107061-06-2C11H9N3O
- 2-(8-Methyl-4-oxo-3,4-dihydroquinazolin-2-yl)acetonitrile477879-84-8C11H9N3O
- 4-Ethoxyquinazoline-6-carbonitrile1818847-80-1C11H9N3O
- Imidazo(1,2-a)quinoxaline, 7-methoxy-39744-68-8C11H9N3O
- 5H-Chromeno[4,3-d]pyrimidin-2-amine109466-23-1C11H9N3O
- 3-(4,5-Dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzonitrile53563-10-3C11H9N3O
- 5-(3-Isocyanatophenyl)-1-methyl-1H-pyrazole941716-86-5C11H9N3O
- 3-(3-Isocyanatophenyl)-1-methyl-1H-pyrazole912569-60-9C11H9N3O
- 5-(3-Methyl-1,2,4-oxadiazol-5-yl)-1H-indole1283108-48-4C11H9N3O
- 3H-1,2,4-Triazol-3-one, 1,2-dihydro-5-phenyl-2-(2-propynyl)-64892-25-7C11H9N3O
- N-Phenylpyrimidine-4-carboxamide99973-06-5C11H9N3O
- 5-Hydroxy-3-methyl-1-phenyl-1H-pyrazole-4-carbonitrile139347-67-4C11H9N3O
- 2-[(4-Methoxyphenylamino)methylene]malononitrile21025-61-6C11H9N3O
- 4-Methoxy-2-(1H-pyrrol-1-yl)nicotinonitrile338412-19-4C11H9N3O
- 2-Pyrazin-2-yl-1-pyridin-2-ylethanone62846-81-5C11H9N3O
- 2-Hydroxy-4-imidazol-1-ylmethyl-benzonitrile210037-57-3C11H9N3O
- 3-(4-Isocyanatophenyl)-1-methyl-1H-pyrazole921938-54-7C11H9N3O
- 1-(4-Methoxyphenyl)-1H-pyrazole-4-carbonitrile118718-59-5C11H9N3O
- 1-(3-Cyanophenyl)-3-(prop-2-yn-1-yl)urea1249604-40-7C11H9N3O
- 2-(5-Cyano-1H-indol-1-yl)acetamide1878282-68-8C11H9N3O
- 4-Methyl[1,4]diazepino[3,2,1-hi]indazol-2(1H)-one112698-24-5C11H9N3O
- (6-Aminopyridazin-3-yl)(phenyl)methanone146233-35-4C11H9N3O
- 6-(3-Methyl-1,2,4-oxadiazol-5-yl)-1H-indole1283108-47-3C11H9N3O
- 5-(2H-1,2,3-Triazol-2-yl)indan-1-one1334784-80-3C11H9N3O
- (2-Amino-3-pyridyl)-(2-pyridyl)methanone1339680-93-1C11H9N3O
- 4-[4-(Aminomethyl)-1,3-oxazol-2-yl]benzonitrile1500937-19-8C11H9N3O
- 5-(Pyridin-4-yl)-2,3-diazabicyclo[4.2.0]octa-1,5-dien-4-one1447607-59-1C11H9N3O
- 3-(1-Methyl-1H-benzo[d]imidazol-5-yl)-3-oxopropanenitrile1616099-40-1C11H9N3O
- 1-Methyl-3H-pyridazino[4,5-b]indol-4(5H)-one90016-87-8C11H9N3O
- 4-[2-(Pyridin-2-yl)hydrazinylidene]cyclohexa-2,5-dien-1-one7687-22-1C11H9N3O
- (2Z)-Amino(2-methyl-3-oxo-2,3-dihydro-1H-isoindol-1-ylidene)acetonitrile809230-43-1C11H9N3O
- [2,3'-Bipyridine]-5-carboxamide164074-61-7C11H9N3O
- 2-Methoxy-6-(pyrazol-1-yl)-benzonitrile134104-43-1C11H9N3O
- 3-(Furan-3-yl)-1H-pyrrolo[2,3-b]pyridin-5-amine923583-51-1C11H9N3O
- 2-(5-Hydroxy-3-phenyl-1H-pyrazol-1-yl)acetonitrile2092231-20-2C11H9N3O
- 1-Cyclopropyl-2-oxo-2,3-dihydro-1H-benzimidazole-5-carbonitrile918152-18-8C11H9N3O
Frequently asked questions
What is the molar mass of C11H9N3O?
The molar mass of C11H9N3O is 199.21 g/mol, calculated from standard atomic weights for 11 carbon atoms, 9 hydrogen atoms, 3 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 199.0746 Da.
How many compounds have the formula C11H9N3O?
CompoundList lists 313 compounds with the molecular formula C11H9N3O, including 2-Methyl-4H,5H-pyrazolo[1,5-a]quinazolin-5-one, 2-[3-Cyano-4,5,5-trimethylfuran-2(5H)-ylidene]malononitrile, Di-2-pyridinylmethanone oxime. 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 C11H9N3O?
C11H9N3O has a degree of unsaturation of 9. 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.