Molecular formula
C18H16N4O2
246 compounds have this formula on CompoundList.
- Molar mass
- 320.35g/mol
- Monoisotopic mass
- 320.1273Da
- Atoms
- 40
- Elements
- 4
- Rings plus double bonds
- 13
The formula C18H16N4O2 describes a molecule made of 18 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms and 2 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 × 1867.49%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 165.03%1.008 × 16 = 16.128 g/mol
- N Nitrogen × 417.49%14.007 × 4 = 56.028 g/mol
- O Oxygen × 29.99%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C18H16N4O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 246 compounds
![N-(1-Ethyl-7-methyl-3-pyrazolo[3,4-b]quinolinyl)-2-furancarboxamide chemical structure, C18H16N4O2, CAS 713129-77-2](/s/OPWCPOLKIVKSBG-UHFFFAOYSA-N.svg)
N-(1-Ethyl-7-methyl-3-pyrazolo[3,4-b]quinolinyl)-2-furancarboxamide
CAS 713129-77-2C18H16N4O2
4-Dimethylaminophenylazophenyl-4'-maleimide
CAS 87963-80-2C18H16N4O2
Methyl 4-methyl-3-((4-(pyridin-3-yl)pyrimidin-2-yl)amino)benzoate
CAS 917392-54-2C18H16N4O2
(E)-2-(1H-Benzoimidazol-2-yl)-3-(5-morpholin-4-yl-furan-2-yl)-acrylonitrile
CAS 1164534-93-3C18H16N4O2
Methyl 4-(((4-(pyridin-3-yl)pyrimidin-2-yl)amino)methyl)benzoate
CAS 849235-67-2C18H16N4O2
N,N-Dimethyl-4-(4-nitrophenylazo)-1-naphthylamine
CAS 10336-21-7C18H16N4O2
![N-(4-Methylphenyl)-4-oxo-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-2-carboxamide chemical structure, C18H16N4O2, CAS 956184-41-1](/s/FKHABTCSCRGVTR-UHFFFAOYSA-N.svg)
N-(4-Methylphenyl)-4-oxo-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-2-carboxamide
CAS 956184-41-1C18H16N4O2
![N-[(3Z)-3-[(2-Ethyl-5-methyl-1H-imidazol-4-yl)methylidene]-2-oxo-1H-indol-5-yl]prop-2-ynamide chemical structure, C18H16N4O2, CAS 1311143-71-1](/s/ORKOHXAJFGRZCL-LCYFTJDESA-N.svg)
N-[(3Z)-3-[(2-Ethyl-5-methyl-1H-imidazol-4-yl)methylidene]-2-oxo-1H-indol-5-yl]prop-2-ynamide
CAS 1311143-71-1C18H16N4O2
2-(2-(1H-Indol-3-ylmethylene)hydrazino)-N-(2-methylphenyl)-2-oxoacetamide
CAS 571164-72-2C18H16N4O2
(E)-N'-(2-Hydroxybenzylidene)-4-methyl-3-phenyl-1H-pyrazole-5-carbohydrazide
CAS 306758-89-4C18H16N4O2
![2-(Furan-2-yl)-1-((tetrahydrofuran-2-yl)methyl)-1H-imidazo[4,5-b]quinoxaline chemical structure, C18H16N4O2, CAS 844649-28-1](/s/CJYOGHXSGNXVLB-UHFFFAOYSA-N.svg)
2-(Furan-2-yl)-1-((tetrahydrofuran-2-yl)methyl)-1H-imidazo[4,5-b]quinoxaline
CAS 844649-28-1C18H16N4O2
![N-(1-Ethyl-6-methylpyrazolo[3,4-b]quinolin-3-yl)furan-2-carboxamide chemical structure, C18H16N4O2, CAS 714939-97-6](/s/GOGXFESCXKLYCF-UHFFFAOYSA-N.svg)
N-(1-Ethyl-6-methylpyrazolo[3,4-b]quinolin-3-yl)furan-2-carboxamide
CAS 714939-97-6C18H16N4O2
![8-Methoxy-5-methyl-3-(pyridin-2-ylmethyl)pyrimido[5,4-b]indol-4-one chemical structure, C18H16N4O2, CAS 899412-96-5](/s/MTGYWVUHAULUDJ-UHFFFAOYSA-N.svg)
8-Methoxy-5-methyl-3-(pyridin-2-ylmethyl)pyrimido[5,4-b]indol-4-one
CAS 899412-96-5C18H16N4O2
![[(E)-(8-Phenylmethoxyquinolin-2-yl)methylideneamino]urea chemical structure, C18H16N4O2, CAS 536718-26-0](/s/GULRWVMNHIEFJS-RGVLZGJSSA-N.svg)
[(E)-(8-Phenylmethoxyquinolin-2-yl)methylideneamino]urea
CAS 536718-26-0C18H16N4O2
N'-(3-Allyl-2-hydroxybenzylidene)-1H-benzimidazole-6-carbohydrazide
CAS 488100-26-1C18H16N4O2
2,3,6,7-Tetrahydro-1,3-dimethyl-8-(1-naphthalenylmethyl)-1H-purine-2,6-dione
CAS 5429-48-1C18H16N4O2
![4-{(E)-[2-(4-Methyl-6-phenylpyrimidin-2-yl)hydrazinylidene]methyl}benzene-1,3-diol chemical structure, C18H16N4O2, CAS 330981-07-2](/s/MQOAVYBHCVMRBC-YBFXNURJSA-N.svg)
4-{(E)-[2-(4-Methyl-6-phenylpyrimidin-2-yl)hydrazinylidene]methyl}benzene-1,3-diol
CAS 330981-07-2C18H16N4O2
(E)-2-(4-(2-(2-Hydroxybenzylidene)hydrazinyl)-6-methylpyrimidin-2-yl)phenol
CAS 1391922-11-4C18H16N4O2
2-(4-Nitrophenyl)-4-(pyrrolidin-1-yl)quinazoline
CAS 432518-68-8C18H16N4O2
![(E)-N'-((2-Hydroxynaphthalen-1-yl)methylene)-1,4,5,6-tetrahydrocyclopenta[c]pyrazole-3-carbohydrazide chemical structure, C18H16N4O2, CAS 5322-40-7](/s/DXALFAYOYMDQMC-VXLYETTFSA-N.svg)
(E)-N'-((2-Hydroxynaphthalen-1-yl)methylene)-1,4,5,6-tetrahydrocyclopenta[c]pyrazole-3-carbohydrazide
CAS 5322-40-7C18H16N4O2
![1,3,10-Trimethyl-5-phenylpyrimido[4',5':3,4]pyrrolo[1,2-b]pyridazine-2,4(1H,3H)-dione chemical structure, C18H16N4O2, CAS 693798-60-6](/s/SYIJPTOFGFQAKR-UHFFFAOYSA-N.svg)
1,3,10-Trimethyl-5-phenylpyrimido[4',5':3,4]pyrrolo[1,2-b]pyridazine-2,4(1H,3H)-dione
CAS 693798-60-6C18H16N4O2
![5-(4-Ethylphenyl)-1-phenyl-1,6a-dihydropyrrolo[3,4-d][1,2,3]triazole-4,6(3aH,5H)-dione chemical structure, C18H16N4O2, CAS 1172761-54-4](/s/KYSYCUKZVAXRIT-UHFFFAOYSA-N.svg)
5-(4-Ethylphenyl)-1-phenyl-1,6a-dihydropyrrolo[3,4-d][1,2,3]triazole-4,6(3aH,5H)-dione
CAS 1172761-54-4C18H16N4O2
![5,5-Dimethyl-3-(2-nitrophenyl)-6H-[1,2,4]triazolo[3,4-a]isoquinoline chemical structure, C18H16N4O2, CAS 147567-58-6](/s/UFRKHATYXVKTCI-UHFFFAOYSA-N.svg)
5,5-Dimethyl-3-(2-nitrophenyl)-6H-[1,2,4]triazolo[3,4-a]isoquinoline
CAS 147567-58-6C18H16N4O2
![N-(4-{[2-(4-Cyanobenzylidene)hydrazino]carbonyl}phenyl)propanamide chemical structure, C18H16N4O2, CAS 6043-56-7](/s/FWEAJWYURUCLCU-UDWIEESQSA-N.svg)
N-(4-{[2-(4-Cyanobenzylidene)hydrazino]carbonyl}phenyl)propanamide
CAS 6043-56-7C18H16N4O2
- 4-(2-Methylquinazoline-4-yl)-7-methoxy-3,4-dihydroquinoxaline-2(1H)-one1415262-07-5C18H16N4O2
- 4-(4-Methylphenyl)-2-{[(pyridin-4-yl)methyl]amino}pyrimidine-5-carboxylic acid1775500-92-9C18H16N4O2
- 2-[(3-Methylphenoxy)methyl]-5-[(3-pyridinylmethyl)amino]-1,3-oxazole-4-carbonitrile606945-60-2C18H16N4O2
- 1-(2-Hydroxyethyl)-5-(naphthalen-1-ylmethyl)pyrazolo[3,4-d]pyrimidin-4-one899971-57-4C18H16N4O2
- 1-(3,4-Dimethylphenyl)-5-phenyl-3a,6a-dihydropyrrolo[3,4-d][1,2,3]triazole-4,6(1H,5H)-dione1189653-22-2C18H16N4O2
- 5-Amino-4-(1H-1,3-benzodiazol-2-yl)-1-(4-methoxyphenyl)-2,3-dihydro-1H-pyrrol-3-one459137-96-3C18H16N4O2
- 7-(Furan-2-yl)-2-[2-(4-methoxyphenyl)ethyl][1,2,4]triazolo[1,5-a]pyrimidine1435987-96-4C18H16N4O2
- 5-(3-Hydroxypropylamino)quinazolino[2,3-a]phthalazin-8-one352544-57-1C18H16N4O2
- N'-(3-(2-Methoxyphenyl)-2-propenylidene)-1H-benzimidazole-6-carbohydrazide488709-39-3C18H16N4O2
- 2-(2-Quinolinylazo)-5-dimethylaminobenzoic acid366798-25-6C18H16N4O2
- 5-(3,4-Dimethylphenyl)-1-phenyl-1,6a-dihydropyrrolo[3,4-d][1,2,3]triazole-4,6(3aH,5H)-dione1189423-74-2C18H16N4O2
- 5-Amino-4-(1H-1,3-benzodiazol-2-yl)-1-(2-methoxyphenyl)-2,3-dihydro-1H-pyrrol-3-one459138-16-0C18H16N4O2
- 1-Benzyl-6-oxo-N-(pyridin-2-ylmethyl)-1,6-dihydropyridazine-3-carboxamide1049501-37-2C18H16N4O2
- 1-(4-Methylphenyl)-4-[3-(pyridin-4-yl)-1,2,4-oxadiazol-5-yl]pyrrolidin-2-one946276-57-9C18H16N4O2
- 1-(4-Methylphenyl)-4-[3-(pyridin-3-yl)-1,2,4-oxadiazol-5-yl]pyrrolidin-2-one946307-14-8C18H16N4O2
- 4H-Imidazo(4,5-c)(1,8)naphthyridin-4-one, 3,5-dihydro-3-(3-hydroxypropyl)-5-phenyl-139482-52-3C18H16N4O2
- N-(3-Methylpyridin-2-yl)-2-(6-oxo-4-phenyl-1,6-dihydropyrimidin-1-yl)acetamide1058225-97-0C18H16N4O2
- N-(2,3-Dihydro-1H-inden-2-yl)-2-(4-oxo-1,2,3-benzotriazin-3(4H)-yl)acetamide1144427-75-7C18H16N4O2
- 1-(3-(1-Methyl-6-oxo-1,6-dihydropyridazin-3-yl)phenyl)-3-phenylurea1021082-18-7C18H16N4O2
- 3-Nitro-2-[4-(3-pyridin-2-ylprop-2-ynylidene)piperidin-1-yl]pyridine1107616-88-5C18H16N4O2
- 4H-Imidazo(4,5-c)(1,8)naphthyridin-4-one, 3,5-dihydro-3-((4-nitrophenyl)methyl)-5-phenyl-, hydrate (2:1)139482-53-4C18H16N4O2
- N-[3-(2-Methyl-4-oxopyrido[2,3-d]pyrimidin-3-yl)phenyl]cyclopropanecarboxamide921522-48-7C18H16N4O2
- N1-(2-methylquinolin-4-yl)-N2-(pyridin-3-ylmethyl)oxalamide941963-34-4C18H16N4O2
- 2-(6-Oxo-4-phenyl-1,6-dihydropyrimidin-1-yl)-N-[(pyridin-2-yl)methyl]acetamide1060198-45-9C18H16N4O2
- N-(6-Methylpyridin-2-yl)-2-(6-oxo-4-phenyl-1,6-dihydropyrimidin-1-yl)acetamide1058484-55-1C18H16N4O2
- 2-[4-(4-Methylphenyl)-6-oxo-1,6-dihydropyrimidin-1-yl]-N-(pyridin-3-yl)acetamide1058485-48-5C18H16N4O2
- 3-[2-(1-Hydroxymethyl-cyclopropyl)-8-methoxy-[1,2,4]triazolo[1,5-a]pyridin-5-yl]-benzonitrile1232333-03-7C18H16N4O2
- 4-Methyl-3-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)-1,3-dihydrobenzimidazol-5-yl]-4,5-dihydro-1H-pyridazin-6-one108381-22-2C18H16N4O2
- Haaapbmi41137-96-6C18H16N4O2
- Ethyl 3-(4-(pyridin-3-yl)pyrimidin-2-ylamino)benzoate112696-09-0C18H16N4O2
- 3-Amino-6-(4-methoxyphenyl)-N-phenylpyrazine-2-carboxamide756521-87-6C18H16N4O2
- 2-(6-Oxo-4-phenylpyrimidin-1(6H)-yl)-N-(pyridin-3-ylmethyl)acetamide1058225-79-8C18H16N4O2
- LTbetaR-IN-12189366-77-4C18H16N4O2
- N-(3-Methylphenyl)-4-oxo-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-2-carboxamide956747-22-1C18H16N4O2
- Methyl 2-methyl-4-pyridin-3-yl-1,4-dihydropyrimido[1,2-a]benzimidazole-3-carboxylate879027-76-6C18H16N4O2
- Methyl 2-methyl-4-pyridin-4-yl-1,4-dihydropyrimido[1,2-a]benzimidazole-3-carboxylate879027-81-3C18H16N4O2
- (E)-N'-(3-Hydroxybenzylidene)-4-methyl-3-phenyl-1H-pyrazole-5-carbohydrazide1284269-35-7C18H16N4O2
- (E)-3-Cyclopropyl-N'-((2-hydroxynaphthalen-1-yl)methylene)-1H-pyrazole-5-carbohydrazide1285532-64-0C18H16N4O2
- Mkk7-cov-92283355-59-7C18H16N4O2
- Benzamide, N-benzoyl-N-(4,5-dimethyl-1H-1,2,3-triazol-1-yl)-19226-35-8C18H16N4O2
- 3-[2-(3,4-Dihydro-1H-isoquinolin-2-yl)-2-oxoethyl]-1,2,3-benzotriazin-4-one440332-11-6C18H16N4O2
- (E)-N'-Benzylidene-3-(4-methoxyphenyl)-1H-pyrazole-5-carbohydrazide305355-26-4C18H16N4O2
- (Z)-2-Imino-N'-(2-methylbenzoyl)-2H-chromene-3-carbohydrazonamide941010-13-5C18H16N4O2
- N4-phenyl-N5-(p-tolyl)-1H-imidazole-4,5-dicarboxamide312755-07-0C18H16N4O2
- 2-(6-Oxo-3-phenylpyridazin-1(6H)-yl)-N-(pyridin-3-ylmethyl)acetamide898189-76-9C18H16N4O2
- (E)-N'-(2-Methoxybenzylidene)-3-phenyl-1H-pyrazole-5-carbohydrazide305354-15-8C18H16N4O2
- N-[(E)-(4-Methoxyphenyl)methylideneamino]-3-phenyl-1H-pyrazole-5-carboxamide357398-03-9C18H16N4O2
- 1-[3-(Furan-2-yl)-5-(quinoxalin-6-yl)-4,5-dihydro-1H-pyrazol-1-yl]propan-1-one941905-52-8C18H16N4O2
- 6-Methyl-N-(4-methylpyridin-2-yl)-4-oxo-1-phenyl-1,4-dihydropyridazine-3-carboxamide1325460-47-6C18H16N4O2
- 6-Methyl-N-(6-methylpyridin-2-yl)-4-oxo-1-phenyl-1,4-dihydropyridazine-3-carboxamide1118815-76-1C18H16N4O2
- 3(2H)-Pyridazinone, 4,5-dihydro-2-(1H-benzimidazol-2-yl)-6-(4-methoxyphenyl)-112445-66-6C18H16N4O2
- 2-(4-Nitrophenyl)-4-propylimidazo[1,2-a]benzimidazole371219-22-6C18H16N4O2
- Benzoic acid, anhydride with N-(4,5-dimethyl-1H-1,2,3-triazol-1-yl)benzenecarboximidic acid19226-31-4C18H16N4O2
- 1-(3-Methylbenzyl)-5-phenyl-3a,6a-dihydropyrrolo[3,4-d][1,2,3]triazole-4,6(1H,5H)-dione1008254-47-4C18H16N4O2
- Methyl 1-(2-cyanoethyl)-3-methyl-6-phenyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate1018141-84-8C18H16N4O2
- 3-(2-(1H-Benzo[d]imidazol-1-yl)ethyl)-5-(4-methoxyphenyl)-1,2,4-oxadiazole879283-27-9C18H16N4O2
- 1-(Furan-2-ylmethyl)-3-{4-[(e)-phenyldiazenyl]phenyl}urea6300-03-4C18H16N4O2
- Ethyl N-(4,6-diphenyl-1,3,5-triazin-2-yl)carbamate29366-68-5C18H16N4O2
- 2-(6-Oxo-3-phenylpyridazin-1(6H)-yl)-N-(pyridin-2-ylmethyl)acetamide898189-85-0C18H16N4O2
- N'-[(E)-(4-Cyanophenyl)methylideneamino]-N-phenylbutanediamide328026-34-2C18H16N4O2
- (E)-3,7-Dimethyl-2-(2-(4-nitrobenzylidene)hydrazinyl)quinoline364361-66-0C18H16N4O2
- N-{2-[(3-Pyridinylcarbonyl)amino]ethyl}-2-quinolinecarboxamide929823-25-6C18H16N4O2
- 1-(4-Methylbenzyl)-5-phenyl-1,6a-dihydropyrrolo[3,4-d][1,2,3]triazole-4,6(3aH,5H)-dione1007921-53-0C18H16N4O2
- N-(6-(1H-Imidazol-1-yl)pyridin-3-yl)-4-oxo-4-phenylbutanamide1111594-62-7C18H16N4O2
- 1-(3-(6-Methoxypyridazin-3-yl)phenyl)-3-phenylurea1021082-20-1C18H16N4O2
- (E)-3-(Furan-2-yl)-N-(4-((6-methylpyridazin-3-yl)amino)phenyl)acrylamide1251711-64-4C18H16N4O2
- N-(4-Methylphenyl)-2-oxo-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-4-carboxamide1025382-78-8C18H16N4O2
- 2-(3-Nitrophenyl)-4-pyrrolidin-1-ylquinazoline370845-53-7C18H16N4O2
- 1,2,4-Triazolo(3,4-a)phthalazine, 6-ethoxy-3-(4-methoxyphenyl)-87540-56-5C18H16N4O2
- 2-{4-[4-(Benzyloxy)phenyl]-3-methyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl}acetonitrile860784-83-4C18H16N4O2
- 1-(2-Methylbenzyl)-5-phenyl-1,6a-dihydropyrrolo[3,4-d][1,2,3]triazole-4,6(3aH,5H)-dione1007931-77-2C18H16N4O2
- N-(1H-1,3-Benzimidazol-2-yl)-2-(5-methoxy-1H-indol-1-yl)acetamide1040704-07-1C18H16N4O2
- 1-Benzyl-4-(5-(pyridin-2-yl)-1,2,4-oxadiazol-3-yl)pyrrolidin-2-one1170300-40-9C18H16N4O2
- 3-(1-(Indolin-1-yl)-1-oxopropan-2-yl)benzo[d][1,2,3]triazin-4(3H)-one1235079-49-8C18H16N4O2
- 5-(2-Amino-2-phenylacetamido)quinoline-8-carboxamide1445782-10-4C18H16N4O2
- 2-(Benzo[d]isoxazol-3-yl)-1-((5R,8S)-6,7,8,9-tetrahydro-5H-5,8-epiminocyclohepta[d]pyrimidin-10-yl)ethanone2058502-75-1C18H16N4O2
Frequently asked questions
What is the molar mass of C18H16N4O2?
The molar mass of C18H16N4O2 is 320.35 g/mol, calculated from standard atomic weights for 18 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms and 2 oxygen atoms. The monoisotopic mass is 320.1273 Da.
How many compounds have the formula C18H16N4O2?
CompoundList lists 246 compounds with the molecular formula C18H16N4O2, including N-(1-Ethyl-7-methyl-3-pyrazolo[3,4-b]quinolinyl)-2-furancarboxamide, 4-Dimethylaminophenylazophenyl-4'-maleimide, Methyl 4-methyl-3-((4-(pyridin-3-yl)pyrimidin-2-yl)amino)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 C18H16N4O2?
C18H16N4O2 has a degree of unsaturation of 13. 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.