Molecular formula
C12H9N3O
331 compounds have this formula on CompoundList.
- Molar mass
- 211.22g/mol
- Monoisotopic mass
- 214.0934Da
- Atoms
- 25
- Elements
- 4
- Rings plus double bonds
- 10
The formula C12H9N3O describes a molecule made of 12 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 × 1268.24%12.011 × 12 = 144.132 g/mol
- H Hydrogen × 94.29%1.008 × 9 = 9.072 g/mol
- N Nitrogen × 319.89%14.007 × 3 = 42.021 g/mol
- O Oxygen × 17.57%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C12H9N3O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 331 compounds
Milrinone
CAS 78415-72-2C12H9N3O
![4-(Oxazolo[4,5-b]pyridin-2-yl)aniline chemical structure, C12H9N3O, CAS 95331-56-9](/s/IQYADSABMIDDAV-UHFFFAOYSA-N.svg)
4-(Oxazolo[4,5-b]pyridin-2-yl)aniline
CAS 95331-56-9C12H9N3O
2-Amino-3-hydroxyphenazine
CAS 4569-77-1C12H9N3O
5,11-Dihydro-6H-pyrido(2,3-b)(1,4)benzodiazepin-6-one
CAS 885-70-1C12H9N3O
![2-[4-(2-Pyrimidinyloxy)phenyl]acetonitrile chemical structure, C12H9N3O, CAS 339105-55-4](/s/VGLKSOKLHZULPY-UHFFFAOYSA-N.svg)
2-[4-(2-Pyrimidinyloxy)phenyl]acetonitrile
CAS 339105-55-4C12H9N3O
3-(1H-Imidazol-5-ylmethylene)-1,3-dihydro-2H-indol-2-one
CAS 372164-79-9C12H9N3O
Centazolone
CAS 65793-50-2C12H9N3O
5-(1H-Benzoimidazol-2-yl)-1H-pyridin-2-one
CAS 54627-94-0C12H9N3O
3-(1H-1,3-Benzimidazol-2-yl)-2(1H)-pyridinone
CAS 842149-97-7C12H9N3O
5H-Pyrido(2,3-b)(1,5)benzodiazepin-5-one, 6,11-dihydro-
CAS 10189-78-3C12H9N3O
2-Cyano-3-(1H-indol-3-yl)acrylamide
CAS 6940-85-8C12H9N3O
![3-(Oxazolo[4,5-b]pyridin-2-yl)aniline chemical structure, C12H9N3O, CAS 52333-90-1](/s/HKWQPWPKROMXCJ-UHFFFAOYSA-N.svg)
3-(Oxazolo[4,5-b]pyridin-2-yl)aniline
CAS 52333-90-1C12H9N3O
![6-Phenylfuro[2,3-d]pyrimidin-4-amine chemical structure, C12H9N3O, CAS 18031-97-5](/s/KLUPXPVKDBPOMJ-UHFFFAOYSA-N.svg)
6-Phenylfuro[2,3-d]pyrimidin-4-amine
CAS 18031-97-5C12H9N3O
![3-Phenyl-1H-imidazo[4,5-b]pyridin-2(3H)-one chemical structure, C12H9N3O, CAS 41010-50-8](/s/LPMPUKCRDPBSSH-UHFFFAOYSA-N.svg)
3-Phenyl-1H-imidazo[4,5-b]pyridin-2(3H)-one
CAS 41010-50-8C12H9N3O
2-Pyridin-2-yl-benzooxazol-5-ylamine
CAS 61431-37-6C12H9N3O
Alpha-cyano-3-indoleacrylamide
C12H9N3O
5-(Naphthalen-2-yl)-1,3,4-oxadiazol-2-amine
CAS 198893-71-9C12H9N3O
1-(Pyridin-2-yl)-2,3-dihydro-1H-1,3-benzodiazol-2-one
CAS 89659-86-9C12H9N3O
![2-Phenyl-7H-pyrrolo[2,3-d]pyrimidin-4-ol chemical structure, C12H9N3O, CAS 91493-94-6](/s/FBCXXFFNKMCXBW-UHFFFAOYSA-N.svg)
2-Phenyl-7H-pyrrolo[2,3-d]pyrimidin-4-ol
CAS 91493-94-6C12H9N3O
![5,10-Dihydro-4H-[1,2,5]oxadiazolo[3,4-a]carbazole chemical structure, C12H9N3O, CAS 256348-46-6](/s/CEKVZGMPIHSBOK-UHFFFAOYSA-N.svg)
5,10-Dihydro-4H-[1,2,5]oxadiazolo[3,4-a]carbazole
CAS 256348-46-6C12H9N3O
1H-Imidazole, 1-(1H-indol-3-ylcarbonyl)-
CAS 99445-26-8C12H9N3O
1-(Pyridin-3-yl)-2,3-dihydro-1H-1,3-benzodiazol-2-one
CAS 161922-05-0C12H9N3O
5-(Naphthalen-1-yl)-1,3,4-oxadiazol-2-amine
CAS 1016494-31-7C12H9N3O
N-(4-(2,2-Dicyanoethenyl)phenyl)acetamide
CAS 26088-79-9C12H9N3O
- 2-(Pyridin-2-yl)-1,3-benzoxazol-6-amine61382-10-3C12H9N3O
- 2-(2-Aminophenoxy)-3-pyridinecarbonitrile926261-53-2C12H9N3O
- 4-((6-Aminopyridin-3-yl)oxy)benzonitrile672945-88-9C12H9N3O
- 2-(4-Aminophenoxy)pyridine-3-carbonitrile901924-07-0C12H9N3O
- 6-(3-Aminophenoxy)pyridine-3-carbonitrile1099689-56-1C12H9N3O
- 4-(2-Furyl)-2-(1H-pyrrol-1-yl)pyrimidine685109-18-6C12H9N3O
- 5-Isocyano-2-methyl-[3,4'-bipyridin]-6(1H)-one1145672-19-0C12H9N3O
- 2-Phenyl-1H-imidazo[4,5-b]pyridin-1-ol339009-94-8C12H9N3O
- 2-(6-Hydroxypyridazin-3-yl)-2-phenylacetonitrile338753-08-5C12H9N3O
- 5-(Quinolin-6-yl)-1,2-oxazol-3-amine1482213-28-4C12H9N3O
- 1-(Pyridin-4-yl)-2,3-dihydro-1H-1,3-benzodiazol-2-one110763-56-9C12H9N3O
- 2-(2H-Benzotriazole-2-yl)phenol10096-91-0C12H9N3O
- N-(2,2-Dicyanovinyl)-acetanilide115096-72-5C12H9N3O
- 5-(Quinolin-2-yl)-1,3-oxazol-2-amine846055-69-4C12H9N3O
- 4-Anilino-2-oxo-1H-pyridine-3-carbonitrile103607-70-1C12H9N3O
- 2(1H)-Pyridinone, 6-(1H-benzimidazol-2-yl)-74356-83-5C12H9N3O
- 3-Pyridinol, 2-(1H-benzimidazol-2-yl)-5004-83-1C12H9N3O
- (3E)-3-(1H-Imidazol-5-ylmethylidene)-1H-indol-2-one372164-71-1C12H9N3O
- Caerulomycinonitrile14761-58-1C12H9N3O
- 2-Pyridin-4-yl-benzooxazol-5-ylamine349609-85-4C12H9N3O
- 9H-Pyrido[3,4-b]indole-3-carboxamide88932-13-2C12H9N3O
- 2-Pyridin-3-yl-benzooxazol-5-ylamine61382-21-6C12H9N3O
- 4-(Benzotriazol-1-yl)phenol39104-19-3C12H9N3O
- 4-[(5-Formylimidazol-1-yl)methyl]benzonitrile183500-37-0C12H9N3O
- 9H-Pyrido[3,4-b]indole-1-carboxamide38940-60-2C12H9N3O
- 2-Phenylpyrazolo[1,5-a]pyrimidin-7-ol90019-56-0C12H9N3O
- 5-Phenylpyrazolo[1,5-A]pyrimidin-7-ol874764-64-4C12H9N3O
- 3-Aminobenzo[f]quinazolin-1-ol7066-25-3C12H9N3O
- 3-Phenyl-5-(1H-pyrazol-3-yl)isoxazole264225-67-4C12H9N3O
- 4-(1-Benzofuran-2-yl)pyrimidin-2-amine1205744-92-8C12H9N3O
- 3-Phenyl-4H-pyrazolo[1,5-a]pyrimidin-7-one77506-26-4C12H9N3O
- 3(2H)-Pyridazinone, 6-(1H-indol-1-yl)-109890-29-1C12H9N3O
- o-1H-Imidazo(4,5-c)pyridin-2-ylphenol24192-88-9C12H9N3O
- 2-Amino-11H-pyrido(2,1-b)quinazolin-11-one86797-87-7C12H9N3O
- 1-Phenyl-1H-pyrazolo[3,4-b]pyridin-3-ol28739-53-9C12H9N3O
- (E)-2-Cyano-3-(1H-indol-4-yl)acrylamide1245571-99-6C12H9N3O
- 1H-Benzimidazol-2-Yl(1H-Pyrrol-2-Yl)methanone1395786-85-2C12H9N3O
- 2-Phenylimidazo[1,2-c]pyrimidin-5(1H)-one54535-54-5C12H9N3O
- 8-Amino-1-phenazineol62842-50-6C12H9N3O
- 4-Nitrosoazobenzene38241-22-4C12H9N3O
- 2-(2-Aminophenyl)oxazolo[5,4-b]pyridine52334-22-2C12H9N3O
- N-9H-Pyrido[3,4-b]indol-3-yl-formamide95935-50-5C12H9N3O
- 2-(1H-Imidazol-1-yl)quinolin-8-ol648896-33-7C12H9N3O
- 5-Phenyl-1,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one871671-45-3C12H9N3O
- 4-(4-Aminophenoxy)pyridine-2-carbonitrile630125-69-8C12H9N3O
- 5-(Benzyloxy)pyrimidine-2-carbonitrile166672-22-6C12H9N3O
- 2-Amino-4-(3-furyl)quinazoline1264036-13-6C12H9N3O
- 2-Amino-4-(2-furyl)quinazoline1264036-54-5C12H9N3O
- N-(Pyridin-2-yl)benzo[d]oxazol-2-amine6458-60-2C12H9N3O
- 2-Phenylpyrazolo[1,5-a]pyrazin-4(5H)-one1255784-04-3C12H9N3O
- 6-(1-Pyrazolyl)-2-quinolone102791-46-8C12H9N3O
- 3-Oxazolo[4,5-c]pyridin-2-ylbenzenamine143361-82-4C12H9N3O
- (2Z)-2-Cyano-3-(1H-indol-3-yl)prop-2-enamide168463-95-4C12H9N3O
- 5-Formyl-2-(4-methyl-1H-imidazol-1-yl)benzonitrile1170735-10-0C12H9N3O
- 2-Phenylimidazo[1,2-a]pyrazin-3(7H)-one27955-58-4C12H9N3O
- 7-Phenyl-3H,4H,5H-pyrrolo[3,2-d]pyrimidin-4-one71435-39-7C12H9N3O
- 7-Phenylimidazo[1,2-a]pyrimidin-5(8H)-one39567-78-7C12H9N3O
- 2-Phenyl-2H-benzo[d][1,2,3]triazole 1-oxide51750-18-6C12H9N3O
- 3-Oxo-3-[4-(1H-pyrazol-1-yl)phenyl]propanenitrile1176541-33-5C12H9N3O
- 5-[4-(1H-Imidazol-1-yl)phenyl]isoxazole314268-36-5C12H9N3O
- 5-(1,3-Benzoxazol-2-yl)pyridin-3-amine925040-88-6C12H9N3O
- 2-[(5-Aminopyridin-2-yl)oxy]benzonitrile868697-72-7C12H9N3O
- 1-Azido-2-phenoxybenzene509078-21-1C12H9N3O
- 4-(Oxazolo[4,5-c]pyridin-2-yl)aniline143361-81-3C12H9N3O
- 5-[4-(1H-Pyrazol-1-yl)phenyl]-1,3-oxazole955976-36-0C12H9N3O
- 2H-Indeno(1,2-c)pyridazine-7-carbonitrile, 3,4,4a,5-tetrahydro-3-oxo-69099-76-9C12H9N3O
- 5H-Pyrido(4,3-b)indole, 1-methyl-3-nitroso-74317-46-7C12H9N3O
- 1,2-Benzisoxazol-3-amine, N-4-pyridinyl-155637-51-7C12H9N3O
- 1 suppliers4-Amino2-(2-furyl)quinazoline40172-85-8C12H9N3O
- 2-Methoxy-5-(4-pyridinyl)nicotinonitrile70959-61-4C12H9N3O
- (E)-2-Cyano-3-(1H-indol-5-yl)acrylamide1245572-02-4C12H9N3O
- 6,11-Dihydro-5H-dipyrido[2,3-b:4',3'-f]azepin-5-one933768-16-2C12H9N3O
- 3-([1,2,4]Triazolo[4,3-a]pyridin-3-yl)phenol1401319-10-5C12H9N3O
- 2-Phenylpyrazolo[1,5-a]pyrimidin-5-ol79039-17-1C12H9N3O
- Milrinone-d32749393-50-6C12H9N3O
- 3-Amino-1H-benzo[g]quinoxalin-2-one924867-36-7C12H9N3O
Frequently asked questions
What is the molar mass of C12H9N3O?
The molar mass of C12H9N3O is 211.22 g/mol, calculated from standard atomic weights for 12 carbon atoms, 9 hydrogen atoms, 3 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 214.0934 Da.
How many compounds have the formula C12H9N3O?
CompoundList lists 331 compounds with the molecular formula C12H9N3O, including Milrinone, 4-(Oxazolo[4,5-b]pyridin-2-yl)aniline, 2-Amino-3-hydroxyphenazine. 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 C12H9N3O?
C12H9N3O has a degree of unsaturation of 10. 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.