Molecular formula
C8H9N3O
678 compounds have this formula on CompoundList.
- Molar mass
- 163.18g/mol
- Monoisotopic mass
- 171.1248Da
- Atoms
- 21
- Elements
- 4
- Rings plus double bonds
- 6
The formula C8H9N3O describes a molecule made of 8 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 × 858.88%12.011 × 8 = 96.088 g/mol
- H Hydrogen × 95.56%1.008 × 9 = 9.072 g/mol
- N Nitrogen × 325.75%14.007 × 3 = 42.021 g/mol
- O Oxygen × 19.80%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C8H9N3O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 301 to 400 of 678 compounds
2-Amino-5,8-dihydroquinazolin-7(6H)-one
CAS 944902-42-5C8H9N3O
![5,6,7,8-Tetrahydropyrido[4,3-D]pyrimidine-4-carbaldehyde chemical structure, C8H9N3O, CAS 944901-80-8](/s/SYYXCXHHEUUGLW-UHFFFAOYSA-N.svg)
5,6,7,8-Tetrahydropyrido[4,3-D]pyrimidine-4-carbaldehyde
CAS 944901-80-8C8H9N3O
![2-(5H-Pyrrolo[2,3-b]pyrazin-6-yl)ethanol chemical structure, C8H9N3O, CAS 1260891-83-5](/s/GASARHOUUKHLGN-UHFFFAOYSA-N.svg)
2-(5H-Pyrrolo[2,3-b]pyrazin-6-yl)ethanol
CAS 1260891-83-5C8H9N3O
![5,6-Dimethyl-2,5-dihydro-4H-pyrazolo[4,3-c]pyridin-4-one chemical structure, C8H9N3O, CAS 1324074-52-3](/s/FGNYASFWIGYHEE-UHFFFAOYSA-N.svg)
5,6-Dimethyl-2,5-dihydro-4H-pyrazolo[4,3-c]pyridin-4-one
CAS 1324074-52-3C8H9N3O
3-(Hydrazinylidenemethyl)benzamide
CAS 61883-17-8C8H9N3O
![5,5-Dimethyl-5H,6H,7H-pyrrolo[2,3-d]pyrimidin-6-one chemical structure, C8H9N3O, CAS 1638761-01-9](/s/CRMSVJAOZAUGPA-UHFFFAOYSA-N.svg)
5,5-Dimethyl-5H,6H,7H-pyrrolo[2,3-d]pyrimidin-6-one
CAS 1638761-01-9C8H9N3O
![5-Methoxy-3-methyl-1H-pyrazolo[3,4-b]pyridine chemical structure, C8H9N3O, CAS 1256835-50-3](/s/IYUDRZDGGRGHAH-UHFFFAOYSA-N.svg)
5-Methoxy-3-methyl-1H-pyrazolo[3,4-b]pyridine
CAS 1256835-50-3C8H9N3O
![1-Methyl-3,4-dihydropyrido[2,3-b]pyrazin-2(1H)-one chemical structure, C8H9N3O, CAS 67074-79-7](/s/GQCQESSEDKNHPS-UHFFFAOYSA-N.svg)
1-Methyl-3,4-dihydropyrido[2,3-b]pyrazin-2(1H)-one
CAS 67074-79-7C8H9N3O
![4-Methyl-5,6-dihydropyrido[2,3-d]pyrimidin-7(1H)-one chemical structure, C8H9N3O, CAS 1779946-51-8](/s/INBUGKZZUJBWEW-UHFFFAOYSA-N.svg)
4-Methyl-5,6-dihydropyrido[2,3-d]pyrimidin-7(1H)-one
CAS 1779946-51-8C8H9N3O
3-Methoxy-5,6-dimethyl-4-pyridazinecarbonitrile
CAS 524-41-4C8H9N3O
5-Isopropoxypyrazine-2-carbonitrile
CAS 1343579-00-9C8H9N3O
4-Ethoxy-2-methylpyrimidine-5-carbonitrile
CAS 874495-29-1C8H9N3O
![4-(Aminomethyl)-1,3-dihydro-2H-pyrrolo[3,2-C]pyridin-2-one chemical structure, C8H9N3O, CAS 1260671-84-8](/s/ZNYYBRVELRKRGZ-UHFFFAOYSA-N.svg)
4-(Aminomethyl)-1,3-dihydro-2H-pyrrolo[3,2-C]pyridin-2-one
CAS 1260671-84-8C8H9N3O
![2-Methyl-7,8-dihydropyrido[4,3-D]pyrimidin-5(6H)-one chemical structure, C8H9N3O, CAS 1393534-28-5](/s/DYBPIKUOTANKHX-UHFFFAOYSA-N.svg)
2-Methyl-7,8-dihydropyrido[4,3-D]pyrimidin-5(6H)-one
CAS 1393534-28-5C8H9N3O
(3-(Furan-2-yl)-1H-pyrazol-4-yl)methanamine
CAS 1520528-23-7C8H9N3O
(3-(Furan-3-yl)-1H-pyrazol-4-yl)methanamine
CAS 1519231-17-4C8H9N3O
![5-[(2-Hydroxyethyl)amino]pyridine-2-carbonitrile chemical structure, C8H9N3O, CAS 1552024-23-3](/s/FYEOXLWTSLKHFZ-UHFFFAOYSA-N.svg)
5-[(2-Hydroxyethyl)amino]pyridine-2-carbonitrile
CAS 1552024-23-3C8H9N3O
![3-[(2-Hydroxyethyl)amino]-2-pyridinecarbonitrile chemical structure, C8H9N3O, CAS 1539799-48-8](/s/YBKXLXCWPAWSOT-UHFFFAOYSA-N.svg)
3-[(2-Hydroxyethyl)amino]-2-pyridinecarbonitrile
CAS 1539799-48-8C8H9N3O
3-(2-Aminoethoxy)-4-pyridinecarbonitrile
CAS 1503212-95-0C8H9N3O
3-Amino-2-methoxy-6-methylisonicotinonitrile
CAS 1367949-34-5C8H9N3O
N-(Cyanomethyl)-1-methyl-1H-pyrrole-3-carboxamide
CAS 1368710-38-6C8H9N3O
2,7-Dimethylimidazo(1,2-a)pyrazin-3(7H)-one
CAS 27955-60-8C8H9N3O
2-Methyl-3-(1-methyl-1H-imidazol-4-yl)-3-oxopropanenitrile
CAS 1414579-62-6C8H9N3O
2-Amino-2-(6-methoxypyridin-3-yl)acetonitrile
CAS 157928-62-6C8H9N3O
- 4-Amino-6-ethoxypicolinonitrile1936018-95-9C8H9N3O
- 2,6-Dimethyl-2H-pyrazolo[4,3-b]pyridine-5(4H)-one1214997-84-8C8H9N3O
- 5-Amino-1,3-dihydro-1-methyl-2H-pyrrolo[2,3-b]pyridin-2-one1824341-92-5C8H9N3O
- 5-Methoxy-3-methyl-1H-pyrazolo[3,4-c]pyridine1956324-85-8C8H9N3O
- 1-(Imidazo[1,2-b]pyridazin-3-yl)ethanol1956321-72-4C8H9N3O
- 2-(3-Cyclopropyl-5-hydroxy-1H-pyrazol-1-yl)acetonitrile2092474-54-7C8H9N3O
- 3,3-Diaminoindolin-2-one860440-58-0C8H9N3O
- (1-Methyl-1H-pyrazolo[4,3-B]pyridin-6-yl)methanol1824147-05-8C8H9N3O
- 1-{2H,4H,5H,6H-Pyrrolo[3,4-c]pyrazol-5-yl}prop-2-en-1-one1933576-99-8C8H9N3O
- 3,5-Dimethyl-4-(1H-pyrazol-4-yl)-1,2-oxazole1928788-69-5C8H9N3O
- 2-Ethyl-5-(1H-pyrrol-2-yl)-1,3,4-oxadiazole186809-79-0C8H9N3O
- 2-Ethylpyrazolo[1,5-a]pyrimidin-5-ol1564777-35-0C8H9N3O
- 7-Ethylpyrazolo[1,5-a]pyrimidin-5-ol167372-31-8C8H9N3O
- 4-(1H-Imidazol-4-yl)-3,5-dimethyl-1,2-oxazole2224269-57-0C8H9N3O
- 4-[(2-Methyl-1H-imidazol-1-yl)methyl]-1,3-oxazole2309586-77-2C8H9N3O
- 6-Methoxy-2-methylimidazo[1,2-a]pyrazine2411635-07-7C8H9N3O
- 5-Ethyl-4H,5H-pyrazolo[1,5-a]pyrazin-4-one2326938-46-7C8H9N3O
- 4-Methoxypyrazolo[1,5-a]pyridin-3-amine2573214-00-1C8H9N3O
- 1-(Bicyclo[1.1.1]pentan-1-yl)-1H-1,2,3-triazole-4-carbaldehyde2714373-46-1C8H9N3O
- 2-Amino-7,8-dihydro-1,6-naphthyridin-5(6H)-one2244061-21-8C8H9N3O
- (5-(1H-Imidazol-5-yl)furan-2-yl)methanamine252054-00-5C8H9N3O
- 2-(Methoxymethyl)imidazo[1,2-A]pyrimidine639855-54-2C8H9N3O
- 1-(3-Azidophenyl)ethan-1-ol577968-57-1C8H9N3O
- 1-Azido-2-(methoxymethyl)benzene1247377-50-9C8H9N3O
- 2-(2-Azidophenyl)ethan-1-ol31590-12-2C8H9N3O
- (2R)-2-Azido-2-phenylethan-1-ol126923-26-0C8H9N3O
- 2,6-Dimethylimidazo[1,2-c]pyrimidin-5(6H)-one57491-47-1C8H9N3O
- Pyrido[3,4-d]pyrimidin-8(5H)-one, 6,7-dihydro-2-methyl-62205-99-6C8H9N3O
- 6-Ethylimidazo[1,5-c]pyrimidin-5(6H)-one488761-24-6C8H9N3O
- 2-Methoxy-3-methyl-3H-imidazo[4,5-c]pyridine61078-18-0C8H9N3O
- 4,6-Dimethylimidazo[1,5-a]pyrimidin-2(1H)-one88875-28-9C8H9N3O
- 1,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(1H)-one35149-49-6C8H9N3O
- 2-Amino-4-ethoxy-3-pyridinecarbonitrile98645-48-8C8H9N3O
- 1,3-Dihydro-1,6-dimethyl-2H-imidazo[4,5-b]pyridin-2-one155789-87-0C8H9N3O
- (1-Methyl-1H-benzo[d][1,2,3]triazol-4-yl)methanol120321-71-3C8H9N3O
- 3-[(1S)-1-Azidoethyl]phenol139306-11-9C8H9N3O
- 4-(Pyrimidin-2-yl)pyrrolidin-2-one1823005-83-9C8H9N3O
- 5-Methoxy-2-methyl-1H-imidazo[4,5-b]pyridine954218-52-1C8H9N3O
- 2,3-Diamino-5-methoxybenzonitrile201412-13-7C8H9N3O
- 2-Pyridinecarbonitrile, 6-(dimethylamino)-3-hydroxy-727737-28-2C8H9N3O
- 5-(Furan-2-yl)-1-methyl-1H-pyrazol-4-amine1177355-47-3C8H9N3O
- 3-Methyl-5-(2-methyl-3-furanyl)-1H-1,2,4-triazole1094563-95-7C8H9N3O
- 2H-Benzimidazol-2-one, 6-amino-1,3-dihydro-4-methyl-75370-60-4C8H9N3O
- 2-Pyridinecarbonitrile, 3-(2-aminoethoxy)-760161-21-5C8H9N3O
- 5-Amino-3-methyl-1H-pyrrolo[2,3-c]pyridin-7-ol502958-39-6C8H9N3O
- O-[(1H-1,3-Benzodiazol-5-yl)methyl]hydroxylamine1002751-08-7C8H9N3O
- 2-Hydrazono-2-phenylacetamide52546-90-4C8H9N3O
- 3-Hydrazinyl-2H-benzo[b][1,4]oxazine1239777-33-3C8H9N3O
- 7-Methoxy-1H-pyrrolo[2,3-c]pyridin-3-amine1190314-34-1C8H9N3O
- 5-Methoxy-1H-pyrrolo[2,3-b]pyridin-4-amine1190321-67-5C8H9N3O
- 6-[(2-Hydroxyethyl)amino]-2-pyridinecarbonitrile909563-19-5C8H9N3O
- 7-Methoxy-1-methyl-1H-benzotriazole115798-83-9C8H9N3O
- 5-Methoxy-2-methylpyrazolo[1,5-a]pyrimidine189116-37-8C8H9N3O
- 2,5-Dimethyl-6H,7H-pyrazolo[1,5-a]pyrimidin-7-one1119448-98-4C8H9N3O
- 5-Isocyanato-N,N-dimethylpyridin-2-amine1384485-21-5C8H9N3O
- (6-Amino-1H-indazol-4-yl)methanol1169788-26-4C8H9N3O
- 2-(Methoxymethyl)-3H-imidazo[4,5-c]pyridine1339732-19-2C8H9N3O
- 5-(5-Methylfuran-2-yl)-1H-imidazol-2-amine1485020-57-2C8H9N3O
- 6-Methoxy-3-methyl-[1,2,4]triazolo[4,3-a]pyridine1892750-94-5C8H9N3O
- O-[(1H-Indazol-3-yl)methyl]hydroxylamine848397-53-5C8H9N3O
- Benzaldehyde-13C semicarbazone1331636-03-3C8H9N3O
- 2,6-Dimethyl[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one64702-38-1C8H9N3O
- 6-(Aminomethyl)-4-methoxypicolinonitrile1393570-16-5C8H9N3O
- 4-(Aminomethyl)-6-methoxypyridine-2-carbonitrile1393557-78-2C8H9N3O
- 6-(2-Aminoethyl)-4-hydroxypyridine-2-carbonitrile1393566-65-8C8H9N3O
- 4-(2-Aminoethyl)-6-hydroxypyridine-2-carbonitrile1393531-91-3C8H9N3O
- 6-Methoxy-1H-pyrrolo[2,3-b]pyridin-5-amine1260385-85-0C8H9N3O
- 5-Methyl-1,3-benzoxazole-2,4-diamine1820683-86-0C8H9N3O
- 5-Methyl-3-(1-methyl-1H-pyrazol-3-yl)isoxazole1824596-58-8C8H9N3O
- 2-(Aminomethyl)-1H-1,3-benzodiazol-5-ol1509529-67-2C8H9N3O
- Oxazolo[5,4-b]pyridine-2-ethanamine933685-33-7C8H9N3O
- 5-(Aminomethyl)-1,3-dihydro-2H-pyrrolo[2,3-b]pyridin-2-one1481120-46-0C8H9N3O
- N-({Imidazo[1,2-a]pyridin-2-yl}methyl)hydroxylamine1528460-62-9C8H9N3O
- N-({Pyrazolo[1,5-a]pyridin-3-yl}methyl)hydroxylamine1557119-83-1C8H9N3O
- N-({1H-pyrrolo[2,3-b]pyridin-3-yl}methyl)hydroxylamine1542232-93-8C8H9N3O
- 3-Amino-2-ethoxypyridine-4-carbonitrile1548619-70-0C8H9N3O
Frequently asked questions
What is the molar mass of C8H9N3O?
The molar mass of C8H9N3O is 163.18 g/mol, calculated from standard atomic weights for 8 carbon atoms, 9 hydrogen atoms, 3 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 171.1248 Da.
How many compounds have the formula C8H9N3O?
CompoundList lists 678 compounds with the molecular formula C8H9N3O, including 2-Amino-5,8-dihydroquinazolin-7(6H)-one, 5,6,7,8-Tetrahydropyrido[4,3-D]pyrimidine-4-carbaldehyde, 2-(5H-Pyrrolo[2,3-b]pyrazin-6-yl)ethanol. 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 C8H9N3O?
C8H9N3O has a degree of unsaturation of 6. 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.