Molecular formula
C18H14N4O3
80 compounds have this formula on CompoundList.
- Molar mass
- 334.33g/mol
- Monoisotopic mass
- 334.1066Da
- Atoms
- 39
- Elements
- 4
- Rings plus double bonds
- 14
The formula C18H14N4O3 describes a molecule made of 18 carbon atoms, 14 hydrogen atoms, 4 nitrogen atoms and 3 oxygen atoms. 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 × 1864.67%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 144.22%1.008 × 14 = 14.112 g/mol
- N Nitrogen × 416.76%14.007 × 4 = 56.028 g/mol
- O Oxygen × 314.36%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C18H14N4O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 80 of 80 compounds
![2-Methyl-N-[(E)-(4-nitrophenyl)methylideneamino]quinoline-4-carboxamide chemical structure, C18H14N4O3, CAS 57505-76-7](/s/RJPFFSPMWKRWNB-YBFXNURJSA-N.svg)
2-Methyl-N-[(E)-(4-nitrophenyl)methylideneamino]quinoline-4-carboxamide
CAS 57505-76-7C18H14N4O3
5-(3-Methoxyphenyl)-3-(5-methyl-1,2,4-oxadiazol-3-yl)-2-oxo-1,2-dihydro-1,6-naphthyridine
CAS 219846-31-8C18H14N4O3
![Methyl 4-[(1-methyl-[1,2,4]triazolo[4,3-a]quinoxalin-4-yl)oxy]benzoate chemical structure, C18H14N4O3, CAS 433691-06-6](/s/ZEMBNEBOOLKFAL-UHFFFAOYSA-N.svg)
Methyl 4-[(1-methyl-[1,2,4]triazolo[4,3-a]quinoxalin-4-yl)oxy]benzoate
CAS 433691-06-6C18H14N4O3
![2-[3-(3-Pyridin-3-yl-1,2,4-oxadiazol-5-yl)propyl]isoindole-1,3-dione chemical structure, C18H14N4O3, CAS 701248-01-3](/s/STJIPXMKTBSYHG-UHFFFAOYSA-N.svg)
2-[3-(3-Pyridin-3-yl-1,2,4-oxadiazol-5-yl)propyl]isoindole-1,3-dione
CAS 701248-01-3C18H14N4O3
![4-Nitro-N-[4-(pyridin-4-ylamino)phenyl]benzamide chemical structure, C18H14N4O3, CAS 23552-71-8](/s/LXRNPLQXTWJKIP-UHFFFAOYSA-N.svg)
4-Nitro-N-[4-(pyridin-4-ylamino)phenyl]benzamide
CAS 23552-71-8C18H14N4O3
2-(1,3-Benzoxazol-2-ylamino)-5-benzyl-4-hydroxy-1H-pyrimidin-6-one
CAS 374085-97-9C18H14N4O3
Salicylazoiminopyridine (>85%)
CAS 66030-25-9C18H14N4O3
Ethyl 5-amino-6-cyano-4-oxo-3-phenyl-3,4-dihydrophthalazine-1-carboxylate
CAS 123542-49-4C18H14N4O3
![3-[2-(3-Phenyl-1,2,4-oxadiazol-5-yl)ethyl]-1,2,3,4-tetrahydroquinazoline-2,4-dione chemical structure, C18H14N4O3, CAS 892287-03-5](/s/FWVYXFAPNWDHSW-UHFFFAOYSA-N.svg)
3-[2-(3-Phenyl-1,2,4-oxadiazol-5-yl)ethyl]-1,2,3,4-tetrahydroquinazoline-2,4-dione
CAS 892287-03-5C18H14N4O3
![N-(3-(1H-Pyrazol-3-yl)phenyl)-2-(2-oxobenzo[d]oxazol-3(2H)-yl)acetamide chemical structure, C18H14N4O3, CAS 1206995-26-7](/s/PLXFSBUTGOTTNE-UHFFFAOYSA-N.svg)
N-(3-(1H-Pyrazol-3-yl)phenyl)-2-(2-oxobenzo[d]oxazol-3(2H)-yl)acetamide
CAS 1206995-26-7C18H14N4O3
3-Benzyl-3'-(4-methoxyphenyl)-5,5'-bi-1,2,4-oxadiazole
CAS 1775374-35-0C18H14N4O3
2-(4-Methyl-5-isoxazolylamine)-N-(4-methyl-5-isoxazolyl)-1,4-naphthoquinone-4-imine
CAS 81621-00-3C18H14N4O3
![N-[5-(2-Methoxyphenyl)-1,3,4-oxadiazol-2-yl]-1H-indole-3-carboxamide chemical structure, C18H14N4O3, CAS 1211720-74-9](/s/KPCLQGXIYIEOGC-UHFFFAOYSA-N.svg)
N-[5-(2-Methoxyphenyl)-1,3,4-oxadiazol-2-yl]-1H-indole-3-carboxamide
CAS 1211720-74-9C18H14N4O3
![1-[5-(3-Cyano-phenyl)-8-methoxy-[1,2,4]triazolo[1,5-a]pyridin-2-yl]-cyclopropanecarboxylic acid chemical structure, C18H14N4O3, CAS 1232333-83-3](/s/WUDHKQUCZMKQJW-UHFFFAOYSA-N.svg)
1-[5-(3-Cyano-phenyl)-8-methoxy-[1,2,4]triazolo[1,5-a]pyridin-2-yl]-cyclopropanecarboxylic acid
CAS 1232333-83-3C18H14N4O3
![5-Methyl-5-[4-(4-oxo-3,4-dihydroquinazolin-2-yl)phenyl]imidazolidine-2,4-dione chemical structure, C18H14N4O3, CAS 1311902-67-6](/s/SBPOIJPCJCMVPV-UHFFFAOYSA-N.svg)
5-Methyl-5-[4-(4-oxo-3,4-dihydroquinazolin-2-yl)phenyl]imidazolidine-2,4-dione
CAS 1311902-67-6C18H14N4O3
![2-(((9-Methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl)oxy)methyl)quinazolin-4(3H)-one chemical structure, C18H14N4O3, CAS 1171676-25-7](/s/GBBNWCXUNLNHEK-UHFFFAOYSA-N.svg)
2-(((9-Methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl)oxy)methyl)quinazolin-4(3H)-one
CAS 1171676-25-7C18H14N4O3
![N-[3-Methoxy-4-(5-oxazolyl)phenyl]-1H-indazole-3-carboxamide chemical structure, C18H14N4O3, CAS 500796-07-6](/s/WXNRUGTXFLGBNH-UHFFFAOYSA-N.svg)
N-[3-Methoxy-4-(5-oxazolyl)phenyl]-1H-indazole-3-carboxamide
CAS 500796-07-6C18H14N4O3
2-(4-Nitrophenyl)-5-(phenethylamino)oxazole-4-carbonitrile
CAS 613649-85-7C18H14N4O3
![3-{[3-(4-Methylphenyl)-1,2,4-oxadiazol-5-yl]methyl}quinazoline-2,4(1H,3H)-dione chemical structure, C18H14N4O3, CAS 1223889-81-3](/s/HVPKMDIMPJNMJI-UHFFFAOYSA-N.svg)
3-{[3-(4-Methylphenyl)-1,2,4-oxadiazol-5-yl]methyl}quinazoline-2,4(1H,3H)-dione
CAS 1223889-81-3C18H14N4O3
![10-(4-Methoxyphenyl)-3-methylbenzo[g]pteridine-2,4(3H,10H)-dione chemical structure, C18H14N4O3, CAS 95353-17-6](/s/JMAHHEIKTVKTEV-UHFFFAOYSA-N.svg)
10-(4-Methoxyphenyl)-3-methylbenzo[g]pteridine-2,4(3H,10H)-dione
CAS 95353-17-6C18H14N4O3
![Methyl 2-amino-1-(3-hydroxyphenyl)pyrrolo[3,2-b]quinoxaline-3-carboxylate chemical structure, C18H14N4O3, CAS 497229-11-5](/s/HVBFZOSVIUZKHK-UHFFFAOYSA-N.svg)
Methyl 2-amino-1-(3-hydroxyphenyl)pyrrolo[3,2-b]quinoxaline-3-carboxylate
CAS 497229-11-5C18H14N4O3
1-Methyl-1H-indazole-3-carboxylic Anhydride
CAS 1363173-34-5C18H14N4O3
![5-Amino-1-(benzo[d][1,3]dioxol-5-yl)-4-(1H-benzo[d]imidazol-2-yl)-1,2-dihydro-3H-pyrrol-3-one chemical structure, C18H14N4O3, CAS 791600-64-1](/s/KLNYTHCOBKMVOX-UHFFFAOYSA-N.svg)
5-Amino-1-(benzo[d][1,3]dioxol-5-yl)-4-(1H-benzo[d]imidazol-2-yl)-1,2-dihydro-3H-pyrrol-3-one
CAS 791600-64-1C18H14N4O3
![(E)-6-Hydroxy-4-oxo-N'-(pyridin-2-ylmethylene)-2,4-dihydro-1H-pyrrolo[3,2,1-ij]quinoline-5-carbohydrazide chemical structure, C18H14N4O3, CAS 384350-42-9](/s/KACKYXVMPCFLLF-KEBDBYFISA-N.svg)
(E)-6-Hydroxy-4-oxo-N'-(pyridin-2-ylmethylene)-2,4-dihydro-1H-pyrrolo[3,2,1-ij]quinoline-5-carbohydrazide
CAS 384350-42-9C18H14N4O3
- 2-(4-Methoxyphenyl)-6-phenyl-[1,2,4]triazolo[4,3-a]pyrazine-3,8(2H,7H)-dione2101221-97-8C18H14N4O3
- Ethyl 3-(4-anilino-5-cyano-6-oxo-1,6-dihydro-3-pyridinyl)-2-cyanoacrylate352554-00-8C18H14N4O3
- N-[3-(4-Methoxyphenyl)-1H-1,2,4-triazol-5-yl]-1-benzofuran-2-carboxamide929471-00-1C18H14N4O3
- 7-(3-Phenoxyphenyl)-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-5-carboxylic acid945201-98-9C18H14N4O3
- 2-Methyl-4-(3-oxo-2,4-dihydroquinoxaline-1-carbonyl)phthalazin-1-one727675-84-5C18H14N4O3
- 4-Methyl-7-[(1-phenyltetrazol-5-yl)methoxy]chromen-2-one728887-17-0C18H14N4O3
- Ethyl 4-[7-amino-8-cyano-5-oxo[1,6]naphthyridin-6(5H)-yl]benzenecarboxylate866008-72-2C18H14N4O3
- (E)-2-(4-Nitrophenyl)-N'-(quinolin-6-ylmethylene)acetohydrazide389076-61-3C18H14N4O3
- 2-(2-Hydroxy-4-oxoquinazolin-3(4H)-yl)-N-(1H-indol-5-yl)acetamide929826-08-4C18H14N4O3
- 3-(Furan-2-yl)-N-(6-methoxyquinolin-8-yl)-1H-pyrazole-5-carboxamide1305279-34-8C18H14N4O3
- 4-(5-Amino-6-(phenylcarbamoyl)pyrazin-2-yl)benzoic acid1232409-71-0C18H14N4O3
- N-(1-Benzyl-1H-pyrazol-4-yl)-5-(furan-2-yl)-1,2-oxazole-3-carboxamide1253408-23-9C18H14N4O3
- N-(1H-Benzo[d]imidazol-2-yl)-5-(4-methoxyphenyl)oxazole-2-carboxamide1795488-76-4C18H14N4O3
- 5-Methyl-N-(5-methyl-2-phenyloxazolo[5,4-b]pyridin-6-yl)isoxazole-3-carboxamide2034422-96-1C18H14N4O3
- 4(3H)-Quinazolinone, 3-((5-(4-hydroxyphenyl)-1,3,4-oxadiazol-2-yl)methyl)-2-methyl-106924-06-5C18H14N4O3
- N-(3-(6-Methoxyimidazo[1,2-b]pyridazin-2-yl)phenyl)furan-2-carboxamide953149-13-8C18H14N4O3
- 5-(Furan-2-yl)-N-(furan-2-ylmethyl)-1-phenyl-1H-1,2,3-triazole-4-carboxamide950254-77-0C18H14N4O3
- 3-Ethyl-7-(3-phenyl-1,2,4-oxadiazol-5-yl)quinazoline-2,4(1H,3H)-dione1357972-93-0C18H14N4O3
- 4-(6-Amino-5-oxazolo[5,4-b]pyridin-2-yl-3-pyridyl)-2-methoxy-phenol1146951-35-0C18H14N4O3
- (3-(3-(Furan-2-yl)-1,2,4-oxadiazol-5-yl)azetidin-1-yl)(1H-indol-2-yl)methanone1428379-87-6C18H14N4O3
- N-(1H-Indazol-6-yl)-5-(4-methoxyphenyl)oxazole-2-carboxamide1795440-93-5C18H14N4O3
- 6-(2-(Benzo[d]isoxazol-3-yl)acetyl)-2-oxo-1,2,5,6,7,8-hexahydro-1,6-naphthyridine-3-carbonitrile2034306-86-8C18H14N4O3
- 6-(1,3-Dimethyl-1H-pyrazol-4-yl)-3-phenylisoxazolo[5,4-b]pyridine-4-carboxylic acid1171701-49-7C18H14N4O3
- 2-[[5-(4-Methoxyphenyl)-1,3,4-oxadiazol-2-yl]methyl]-1(2H)-phthalazinone1241428-32-9C18H14N4O3
- 2-(Benzo[d]isoxazol-3-yl)-N-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)acetamide1226448-96-9C18H14N4O3
- 2-(Benzo[d]isoxazol-3-yl)-N-(4-(3-methyl-1,2,4-oxadiazol-5-yl)phenyl)acetamide1226431-52-2C18H14N4O3
- 2-[3-(Furan-2-yl)-6-oxopyridazin-1(6H)-yl]-N-(1H-indol-5-yl)acetamide1401533-87-6C18H14N4O3
- 2-[3-(Furan-2-yl)-6-oxopyridazin-1(6H)-yl]-N-(1H-indol-4-yl)acetamide1401589-12-5C18H14N4O3
- 2-[3-(Furan-2-yl)-6-oxopyridazin-1(6H)-yl]-N-(1H-indol-6-yl)acetamide1401572-55-1C18H14N4O3
- 3-((1-(Benzofuran-2-carbonyl)pyrrolidin-3-yl)oxy)pyrazine-2-carbonitrile2034281-59-7C18H14N4O3
- N-(2-(4-Oxobenzo[d][1,2,3]triazin-3(4H)-yl)ethyl)benzofuran-2-carboxamide2034324-96-2C18H14N4O3
- N-(2-(7-Oxofuro[2,3-c]pyridin-6(7H)-yl)ethyl)quinoxaline-6-carboxamide2034414-52-1C18H14N4O3
- 2-(Benzo[d]isoxazol-3-yl)-N-((3-(furan-2-yl)pyrazin-2-yl)methyl)acetamide2034540-19-5C18H14N4O3
- N-((3-(Pyridin-3-yl)pyrazin-2-yl)methyl)benzo[d][1,3]dioxole-5-carboxamide2034317-54-7C18H14N4O3
- 2-[4-(1H-Benzotriazol-1-yl)-4-oxobutyl]-1H-isoindole-1,3(2H)-dione915874-37-2C18H14N4O3
- 2-(2-Hydroxyethyl)-8-(2-pyridyl)pyrido[4,3-b][1,6]naphthyridine-1,9(2H,8H)-dione1158594-66-1C18H14N4O3
- 2-(2-Hydroxyethyl)-8-(pyridin-4-yl)pyrido[4,3-b][1,6]naphthyridine-1,9(2H,8H)-dione1158195-99-3C18H14N4O3
- 3-(6-Oxo-3-phenylpyrazolo[1,5-a]pyrido[3,4-e]pyrimidin-7(6H)-yl)propanoic acid1211813-50-1C18H14N4O3
- 7-Ethoxy-N-(3-ethynylphenyl)-6-nitroquinazolin-4-amine1430203-53-4C18H14N4O3
- 3-(2H-1,3-Benzodioxol-5-yl)-1-{[2,4'-bipyridine]-5-yl}urea2034560-57-9C18H14N4O3
- 4-Quinolinecarboxylic acid, 2-(4-(5-nitro-2-furyl)-1,3-butadienyl)-, hydrazide73987-36-7C18H14N4O3
- N-[4-(3-Nitrophenyl)-6-phenyl-2-pyrimidinyl]acetamide67005-22-5C18H14N4O3
- N-(3-Cyanophenyl)-6,7-dihydro-1H-[1,4]dioxino[2,3-f]benzimidazole-1-acetamide1176544-49-2C18H14N4O3
- Methyl 2-methyl-6-oxo-7-phenyl-6,7-dihydropyrazolo[1,5-a]pyrido[3,4-e]pyrimidine-3-carboxylate1324063-01-5C18H14N4O3
- N-(4-Methyl-2-(3-nitrophenyl)pyrimidin-5-yl)benzamide649746-02-1C18H14N4O3
- 5-Formyl-4-methyl-1-[2-(6-nitro-3-pyridinyl)ethyl]-1H-indole-2-carbonitrile1887181-10-3C18H14N4O3
- 4-{[7-(4-Pyridinylmethoxy)furo[2,3-d]pyridazin-4-yl]amino}phenol332012-79-0C18H14N4O3
- 2-Oxo-2-(2-((2-oxo-1,2-dihydroquinolin-3-yl)methylene)hydrazinyl)-N-phenylacetamide880065-94-1C18H14N4O3
- N-(6-Amino-2,4-dioxo-3-prop-2-ynyl-1H-pyrimidin-5-yl)naphthalene-2-carboxamide197075-92-6C18H14N4O3
- 3-{2-[3-(4-Nitrophenyl)-1,2,4-oxadiazol-5-yl]ethyl}-1H-indole82076-04-8C18H14N4O3
- 2,2'-[Oxybis(methylene)]bis(5-phenyl-1,3,4-oxadiazole)111950-90-4C18H14N4O3
- 2-(5-Methoxy-2-methyl-1H-indol-3-yl)-7-nitro-quinoxaline1380571-57-2C18H14N4O3
- 4-{(E)-[(Furan-2-yl)(2-phenylhydrazinylidene)methyl]diazenyl}benzoic acid116143-45-4C18H14N4O3
- (1-Phenylpyrazol-4-yl) 7-methoxyimidazo[1,2-a]pyridine-3-carboxylate2416231-42-8C18H14N4O3
- 2-Cyano-3-(furan-2-yl)-N-[3-(5-methyl-2-oxo-2,3-dihydro-1H-imidazol-1-yl)phenyl]prop-2-enamide1798404-47-3C18H14N4O3
- 5-Methyl-4-oxo-1-(6-pyrrol-1-yl-1H-benzimidazol-2-yl)pyridine-2-carboxylic acid1508282-87-8C18H14N4O3
Frequently asked questions
What is the molar mass of C18H14N4O3?
The molar mass of C18H14N4O3 is 334.33 g/mol, calculated from standard atomic weights for 18 carbon atoms, 14 hydrogen atoms, 4 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 334.1066 Da.
How many compounds have the formula C18H14N4O3?
CompoundList lists 80 compounds with the molecular formula C18H14N4O3, including 2-Methyl-N-[(E)-(4-nitrophenyl)methylideneamino]quinoline-4-carboxamide, 5-(3-Methoxyphenyl)-3-(5-methyl-1,2,4-oxadiazol-3-yl)-2-oxo-1,2-dihydro-1,6-naphthyridine, Methyl 4-[(1-methyl-[1,2,4]triazolo[4,3-a]quinoxalin-4-yl)oxy]benzoate. 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 C18H14N4O3?
C18H14N4O3 has a degree of unsaturation of 14. 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.