Molecular formula
C8H5N3O
112 compounds have this formula on CompoundList.
- Molar mass
- 159.15g/mol
- Monoisotopic mass
- 159.0433Da
- Atoms
- 17
- Elements
- 4
- Rings plus double bonds
- 8
The formula C8H5N3O describes a molecule made of 8 carbon atoms, 5 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 × 860.38%12.011 × 8 = 96.088 g/mol
- H Hydrogen × 53.17%1.008 × 5 = 5.040 g/mol
- N Nitrogen × 326.40%14.007 × 3 = 42.021 g/mol
- O Oxygen × 110.05%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C8H5N3O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 112 compounds
![2-Hydroxy-1H-pyrrolo[3,2-b]pyridine-3-carbonitrile chemical structure, C8H5N3O, CAS 32501-04-5](/s/METOCGOPVSIXJX-UHFFFAOYSA-N.svg)
2-Hydroxy-1H-pyrrolo[3,2-b]pyridine-3-carbonitrile
CAS 32501-04-5C8H5N3O
2-Oxo-2,3-dihydro-1H-benzimidazole-5-carbonitrile
CAS 221289-88-9C8H5N3O
2-Amino-1,3-benzoxazole-5-carbonitrile
CAS 1654728-13-8C8H5N3O
![Pyrido[2,3-b]pyrazine-8-carbaldehyde chemical structure, C8H5N3O, CAS 933716-73-5](/s/YEGOMKCYWLUVKT-UHFFFAOYSA-N.svg)
Pyrido[2,3-b]pyrazine-8-carbaldehyde
CAS 933716-73-5C8H5N3O
![2-Oxo-1H,2H,3H-pyrrolo[2,3-c]pyridine-4-carbonitrile chemical structure, C8H5N3O, CAS 1190320-26-3](/s/DPWJZAMAZSWBMR-UHFFFAOYSA-N.svg)
2-Oxo-1H,2H,3H-pyrrolo[2,3-c]pyridine-4-carbonitrile
CAS 1190320-26-3C8H5N3O
2-Amino-1,3-benzoxazole-6-carbonitrile
CAS 1806379-17-8C8H5N3O
![5-Hydroxypyrazolo[1,5-a]pyridine-3-carbonitrile chemical structure, C8H5N3O, CAS 2091406-32-3](/s/FRUMSDLVLZWMTL-UHFFFAOYSA-N.svg)
5-Hydroxypyrazolo[1,5-a]pyridine-3-carbonitrile
CAS 2091406-32-3C8H5N3O
3-Diazooxindole
CAS 3265-29-0C8H5N3O
![Pyrido[2,3-b]pyrazine-3-carbaldehyde chemical structure, C8H5N3O, CAS 874279-17-1](/s/AVOYWCNKRKUPFG-UHFFFAOYSA-N.svg)
Pyrido[2,3-b]pyrazine-3-carbaldehyde
CAS 874279-17-1C8H5N3O
![2-Oxo-1H,2H,3H-pyrrolo[2,3-b]pyridine-4-carbonitrile chemical structure, C8H5N3O, CAS 1190313-69-9](/s/ZRXDQYMPBJRMIO-UHFFFAOYSA-N.svg)
2-Oxo-1H,2H,3H-pyrrolo[2,3-b]pyridine-4-carbonitrile
CAS 1190313-69-9C8H5N3O
3-Amino-1,2-benzisoxazole-6-carbonitrile
CAS 229623-53-4C8H5N3O
![2-Oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-5-carbonitrile chemical structure, C8H5N3O, CAS 1190321-76-6](/s/JYTNXNRPQFUGOF-UHFFFAOYSA-N.svg)
2-Oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-5-carbonitrile
CAS 1190321-76-6C8H5N3O
![2-Oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carbonitrile chemical structure, C8H5N3O, CAS 1190317-09-9](/s/IIXUXTXVHOVQCP-UHFFFAOYSA-N.svg)
2-Oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carbonitrile
CAS 1190317-09-9C8H5N3O
![2-Oxo-2,3-dihydro-1H-pyrrolo[3,2-b]pyridine-5-carbonitrile chemical structure, C8H5N3O, CAS 1167056-59-8](/s/JRUDEYDNMPKRTB-UHFFFAOYSA-N.svg)
2-Oxo-2,3-dihydro-1H-pyrrolo[3,2-b]pyridine-5-carbonitrile
CAS 1167056-59-8C8H5N3O
3,4-Pyridinedicarbonitrile, 1,2-dihydro-6-methyl-2-oxo-
CAS 100960-56-3C8H5N3O
![Pyrido[2,3-b]pyrazine-6-carbaldehyde chemical structure, C8H5N3O, CAS 874279-16-0](/s/FQVPEJDAEZBQRA-UHFFFAOYSA-N.svg)
Pyrido[2,3-b]pyrazine-6-carbaldehyde
CAS 874279-16-0C8H5N3O
3-(2-Propynyloxy)-2-pyrazinecarbonitrile
CAS 717848-19-6C8H5N3O
![6-Hydroxy-1H-pyrrolo[2,3-b]pyridine-4-carbonitrile chemical structure, C8H5N3O, CAS 1167056-72-5](/s/LQNBYALTBFDRAD-UHFFFAOYSA-N.svg)
6-Hydroxy-1H-pyrrolo[2,3-b]pyridine-4-carbonitrile
CAS 1167056-72-5C8H5N3O
![7-Hydroxyimidazo[1,2-a]pyridine-8-carbonitrile chemical structure, C8H5N3O, CAS 1152617-29-2](/s/IYWGIOYFNFSMHU-UHFFFAOYSA-N.svg)
7-Hydroxyimidazo[1,2-a]pyridine-8-carbonitrile
CAS 1152617-29-2C8H5N3O
2-Methyl-6-oxo-1,6-dihydropyridine-3,4-dicarbonitrile
CAS 400081-34-7C8H5N3O
4-Amino-5-hydroxybenzene-1,2-dicarbonitrile
CAS 893763-28-5C8H5N3O
![1H-Pyrazolo[3,4-e]benzoxazole chemical structure, C8H5N3O, CAS 217526-14-2](/s/KILWPWKXLHERSW-UHFFFAOYSA-N.svg)
1H-Pyrazolo[3,4-e]benzoxazole
CAS 217526-14-2C8H5N3O
![2-Oxo-2,3-dihydro-1H-pyrrolo[3,2-b]pyridine-6-carbonitrile chemical structure, C8H5N3O, CAS 1190322-82-7](/s/IAQJCKMVCXPHJA-UHFFFAOYSA-N.svg)
2-Oxo-2,3-dihydro-1H-pyrrolo[3,2-b]pyridine-6-carbonitrile
CAS 1190322-82-7C8H5N3O
![2-Oxo-1,2-dihydropyrazolo[1,5-a]pyridine-6-carbonitrile chemical structure, C8H5N3O, CAS 2734860-78-5](/s/QIBJBDAIJWIWKO-UHFFFAOYSA-N.svg)
2-Oxo-1,2-dihydropyrazolo[1,5-a]pyridine-6-carbonitrile
CAS 2734860-78-5C8H5N3O
- 3-(Furan-2-yl)-1H-pyrazole-4-carbonitrile1008428-33-8C8H5N3O
- 5-(Pyridin-4-yl)-3H-pyrazol-3-one78584-36-8C8H5N3O
- 4-Aminofuro[3,2-c]pyridine-2-carbonitrile215454-29-8C8H5N3O
- 2H-Oxazolo[4,5-g]indazole21274-68-0C8H5N3O
- 6H-Imidazo[4,5-g][1,3]benzoxazole14183-21-2C8H5N3O
- Isoxazolo[5,4-B]pyridine-3-acetonitrile58035-53-3C8H5N3O
- 3-Aminobenzo[d]isoxazole-5-carbonitrile201157-76-8C8H5N3O
- 2H-Imidazo[4,5-G]benzoxazole42341-37-7C8H5N3O
- 2H-Pyrazolo[3,4-g]benzoxazole42318-51-4C8H5N3O
- 3H-[1,2,5]Oxadiazolo[3,4-g]indole374112-75-1C8H5N3O
- 5-Cyano-1H-pyrrolo[2,3-b]pyridine 7-oxide1935462-65-9C8H5N3O
- 1-Hydroxy-1H-benzo[d]imidazole-2-carbonitrile40159-90-8C8H5N3O
- 3-(Cyanoamino)phenyl cyanate62272-57-5C8H5N3O
- 5-Hydroxy-1H-indazole-4-carbonitrile478840-31-2C8H5N3O
- 2H-Imidazo[4,5-f][1,3]benzoxazole267-85-6C8H5N3O
- 2H-Imidazo[4,5-E]benzoxazole933789-60-7C8H5N3O
- Pyrido[2,3-b]pyrazine-7-carboxaldehyde874279-15-9C8H5N3O
- 2H-Pyrazolo[3,4-g]-1,2-benzisoxazole60209-92-9C8H5N3O
- 3,4-Pyridinedicarbonitrile, 1,2-dihydro-1-methyl-2-oxo-501934-83-4C8H5N3O
- 3-Azido-1-benzofuran62095-87-8C8H5N3O
- Benzoxazolyl-cyanamide79463-81-3C8H5N3O
- 3-Aminobenzo[c]isoxazole-5-carbonitrile94144-41-9C8H5N3O
- 3-Hydroxy-4-cyano (1H)indazole1000342-91-5C8H5N3O
- 2H-Isoxazolo[5,4-b]pyrrolo[3,4-d]pyridine407624-71-9C8H5N3O
- 1H-Isoxazolo[3,4-d]pyrrolo[2,3-b]pyridine282736-61-2C8H5N3O
- 2H-Isoxazolo[5,4-B]pyrrolo[2,3-E]pyridine952702-87-3C8H5N3O
- 1H-[1,2,5]Oxadiazolo[3,4-f]isoindole65122-53-4C8H5N3O
- 2H-Benzofuro[2,3-d]triazole33080-67-0C8H5N3O
- 8H-[1,2]Oxazolo[4,3-g]indazole740840-15-7C8H5N3O
- 1H-[1,2]Oxazolo[3,4-E]indazole84030-70-6C8H5N3O
- 6H-Imidazo[4,5-e][2,1]benzoxazole84732-07-0C8H5N3O
- 1H-Isoxazolo[5,4-g]indazole173894-82-1C8H5N3O
- 4-Hydroxypyrrolo[1,2-b]pyridazine-3-carbonitrile1263419-99-3C8H5N3O
- 5-Hydroxy-1H-pyrrolo[2,3-b]pyridine-3-carbonitrile1016241-62-5C8H5N3O
- 2,6-Dicyano-4-methoxypyridine453566-13-7C8H5N3O
- 2H-Isoxazolo[4,5-g]indazole173894-83-2C8H5N3O
- 2-Nitrosoquinoxaline41443-29-2C8H5N3O
- 2-Oxo-2,3-dihydro-1H-benzo[d]imidazole-4-carbonitrile1388047-42-4C8H5N3O
- 6-Amino-1,3-benzoxazole-2-carbonitrile1542322-55-3C8H5N3O
- 3-Methoxypyridine-2,6-dicarbonitrile1795466-51-1C8H5N3O
- 3-(Furan-3-yl)-1H-pyrazole-4-carbonitrile2098120-15-9C8H5N3O
- 6-Aminobenzo[d]isoxazole-3-carbonitrile343868-60-0C8H5N3O
- 3-Aminobenzo[c]isoxazole-7-carbonitrile94144-42-0C8H5N3O
- 7H-Oxazolo[5,4-e]indazole21274-69-1C8H5N3O
- 2H-Furo[3,2-e]benzotriazole210-91-3C8H5N3O
- 2-Oxo-1H,2H,3H-pyrrolo[2,3-c]pyridine-5-carbonitrile1167056-62-3C8H5N3O
- 2-Hydroxyimidazo[1,2-a]pyridine-7-carbonitrile1020043-93-9C8H5N3O
- 2-Amino-1,3-benzoxazole-4-carbonitrile1806318-91-1C8H5N3O
- 2-Aminobenzo[d]oxazole-7-carbonitrile1803861-72-4C8H5N3O
- 6-Isocyanato-1H-benzimidazole1227095-69-3C8H5N3O
- Oxazolo[5,4-b]pyridine-2-acetonitrile158141-38-9C8H5N3O
- 3-Isocyanatopyrazolo[1,5-a]pyridine2411973-58-3C8H5N3O
- 3-Isocyanato-1H-pyrrolo[2,3-b]pyridine2649011-65-2C8H5N3O
- 5-(3-Hydroxyprop-1-yn-1-yl)pyrimidine-2-carbonitrile2098048-98-5C8H5N3O
- 3-(3-Hydroxyprop-1-yn-1-yl)pyrazine-2-carbonitrile2097988-74-2C8H5N3O
- 2-Hydroxypyrrolo[1,2-B]pyridazine-7-carbonitrile1812188-65-0C8H5N3O
- 2-Oxo-1H,2H,3H-pyrrolo[2,3-c]pyridine-7-carbonitrile1190309-94-4C8H5N3O
- Pyrido[3,4-d]pyrimidine-4-carbaldehyde1352893-25-4C8H5N3O
- 3-HydroxyPyrazolo[1,5-a]pyridine-6-carbonitrile2795140-41-7C8H5N3O
- 2-Hydroxyimidazo[1,2-a]pyridine-3-carbonitrile869472-61-7C8H5N3O
- 2-Methyl-3-hydroxy-4,5-bis(cyano)pyridine3307-90-2C8H5N3O
- 2-Aminofuro[3,2-b]pyridine-3-carbonitrile69539-66-8C8H5N3O
- 2-(Amino(furan-2-yl)methylene)malononitrile67945-78-2C8H5N3O
- 2,4-Pyridinedicarbonitrile, 6-(hydroxymethyl)-448908-08-5C8H5N3O
- 5-Oxa-2a,6,7-triazaacenaphthylene749902-49-6C8H5N3O
- 11-Oxa-3,5,8-triazatricyclo[7.3.0.02,6]dodeca-1(12),2(6),3,7,9-pentaene853377-60-3C8H5N3O
- 7H-Pyrrolo[3,4-e]-2,1,3-benzoxadiazole872678-77-8C8H5N3O
- 1H-Imidazo[4,5-f][2,1]benzoxazole353800-05-2C8H5N3O
- 2-Oxo-2,3-dihydro-1H-pyrrolo[3,2-b]pyridine-7-carbonitrile1190313-77-9C8H5N3O
- 6-Cyano-5-aza-2-oxindole1260384-16-4C8H5N3O
- 7-Isocyanato-1H-indazole2649023-31-2C8H5N3O
- 2-Methoxypyridine-3,5-dicarbonitrile172208-07-0C8H5N3O
- 3-Aminobenzo[d]isoxazole-4-carbonitrile657348-76-0C8H5N3O
- 3-Oxo-1,2-dihydroindazole-6-carbonitrile1428940-27-5C8H5N3O
- 4-Aminobenzo[d]oxazole-2-carbonitrile1804412-01-8C8H5N3O
- Pyrazolo[1,5-a]pyridine-3-carbonitrile, 4-hydroxy-2091440-05-8C8H5N3O
Frequently asked questions
What is the molar mass of C8H5N3O?
The molar mass of C8H5N3O is 159.15 g/mol, calculated from standard atomic weights for 8 carbon atoms, 5 hydrogen atoms, 3 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 159.0433 Da.
How many compounds have the formula C8H5N3O?
CompoundList lists 112 compounds with the molecular formula C8H5N3O, including 2-Hydroxy-1H-pyrrolo[3,2-b]pyridine-3-carbonitrile, 2-Oxo-2,3-dihydro-1H-benzimidazole-5-carbonitrile, 2-Amino-1,3-benzoxazole-5-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 C8H5N3O?
C8H5N3O has a degree of unsaturation of 8. 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.