Molecular formula
C21H18N2O2
197 compounds have this formula on CompoundList.
- Molar mass
- 330.39g/mol
- Monoisotopic mass
- 330.1368Da
- Atoms
- 43
- Elements
- 4
- Rings plus double bonds
- 14
The formula C21H18N2O2 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 2 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 × 2176.34%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 185.49%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 28.48%14.007 × 2 = 28.014 g/mol
- O Oxygen × 29.69%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C21H18N2O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 197 of 197 compounds
6-(4-Methoxyphenyl)-1-(4-methylbenzyl)-2-oxo-1,2-dihydro-3-pyridinecarbonitrile
CAS 337919-90-1C21H18N2O2
1-(3-(1-Hydroxynaphthalen-2-yl)-5-phenyl-4,5-dihydro-1H-pyrazol-1-yl)ethanone
CAS 22877-12-9C21H18N2O2
5-(Furan-2-yl)-1-(3-methylbenzoyl)-3-phenyl-4,5-dihydro-1H-pyrazole
CAS 865615-96-9C21H18N2O2
1-(3-Methoxybenzyl)-5-(4-methylphenyl)-2-oxo-1,2-dihydro-3-pyridinecarbonitrile
CAS 338964-94-6C21H18N2O2
Ethanediamide, methyltriphenyl-
CAS 204776-55-6C21H18N2O2
![N-[(E)-(2-Phenylmethoxyphenyl)methylideneamino]benzamide chemical structure, C21H18N2O2, CAS 1262985-78-3](/s/GHTMJAGUKALNPR-PXLXIMEGSA-N.svg)
N-[(E)-(2-Phenylmethoxyphenyl)methylideneamino]benzamide
CAS 1262985-78-3C21H18N2O2
![Methyl 1-phenethyl-9H-pyrido[3,4-b]indole-3-carboxylate chemical structure, C21H18N2O2, CAS 374707-31-0](/s/VMELSXHEVWBWAF-UHFFFAOYSA-N.svg)
Methyl 1-phenethyl-9H-pyrido[3,4-b]indole-3-carboxylate
CAS 374707-31-0C21H18N2O2
N-(1-Methyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)naphthalene-1-carboxamide
CAS 921914-03-6C21H18N2O2
2-(Naphthalen-1-yl)-N-(2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)acetamide
CAS 922131-39-3C21H18N2O2
N-(1-Ethyl-2-oxoindolin-5-yl)-1-naphthamide
CAS 921837-49-2C21H18N2O2
N-(1-Ethyl-2-oxoindolin-5-yl)-2-naphthamide
CAS 921813-17-4C21H18N2O2
2-Cyano-3-(4-methoxyphenyl)-N-(naphthalen-1-yl)propanamide
CAS 1260940-02-0C21H18N2O2
![1-[4-(Methyloxy)phenyl]-4-[(phenylmethyl)oxy]-1H-indazole chemical structure, C21H18N2O2, CAS 1056265-48-5](/s/WRECSAVKACALMR-UHFFFAOYSA-N.svg)
1-[4-(Methyloxy)phenyl]-4-[(phenylmethyl)oxy]-1H-indazole
CAS 1056265-48-5C21H18N2O2
1-Benzoyl-3-(furan-2-yl)-5-(3-methylphenyl)-4,5-dihydro-1H-pyrazole
CAS 1797570-39-8C21H18N2O2
![3-Cyano-N-[3-hydroxy-3-(naphthalen-1-yl)propyl]benzamide chemical structure, C21H18N2O2, CAS 1421517-29-4](/s/AKAQLGSQVFCVJA-UHFFFAOYSA-N.svg)
3-Cyano-N-[3-hydroxy-3-(naphthalen-1-yl)propyl]benzamide
CAS 1421517-29-4C21H18N2O2
![[Diphenyl(phenyldiazenyl)methyl] acetate chemical structure, C21H18N2O2, CAS 6943-57-3](/s/XSCGWODDSJNARA-UHFFFAOYSA-N.svg)
[Diphenyl(phenyldiazenyl)methyl] acetate
CAS 6943-57-3C21H18N2O2
4-(4-Methylphenyl)-2,3-diphenyl-1,2,4-oxadiazolidin-5-one
CAS 62803-75-2C21H18N2O2
6,6'-Methylenebis(4-methylquinolin-2(1H)-one)
CAS 500349-82-6C21H18N2O2
![11-Methoxy-6,13-dihydro-5H-indolo[3,2-c]acridin-8-yl methyl ether chemical structure, C21H18N2O2, CAS 860786-96-5](/s/DQRMZEOCELYMHX-UHFFFAOYSA-N.svg)
11-Methoxy-6,13-dihydro-5H-indolo[3,2-c]acridin-8-yl methyl ether
CAS 860786-96-5C21H18N2O2
![4-[(Z)-[2-(4-tert-Butylphenyl)-5-oxo-1,3-oxazol-4-ylidene]methyl]benzonitrile chemical structure, C21H18N2O2, CAS 352205-73-3](/s/MNVRQSUMBJWXHJ-PDGQHHTCSA-N.svg)
4-[(Z)-[2-(4-tert-Butylphenyl)-5-oxo-1,3-oxazol-4-ylidene]methyl]benzonitrile
CAS 352205-73-3C21H18N2O2
![5-Benzyl-3,4-dimethyl-1-phenylpyrano[2,3-c]pyrazol-6-one chemical structure, C21H18N2O2, CAS 664967-24-2](/s/SNJSWHSZKDUATR-UHFFFAOYSA-N.svg)
5-Benzyl-3,4-dimethyl-1-phenylpyrano[2,3-c]pyrazol-6-one
CAS 664967-24-2C21H18N2O2
![N-[4-(2-Oxopyrrolidin-1-yl)phenyl]naphthalene-2-carboxamide chemical structure, C21H18N2O2, CAS 941933-09-1](/s/YLVWYQDAUSRQIL-UHFFFAOYSA-N.svg)
N-[4-(2-Oxopyrrolidin-1-yl)phenyl]naphthalene-2-carboxamide
CAS 941933-09-1C21H18N2O2
![N'-[(1E)-2-Hydroxy-1,2-diphenylethylidene]benzohydrazide chemical structure, C21H18N2O2, CAS 104662-64-8](/s/OQZHQQZPEZMINH-ZBJSNUHESA-N.svg)
N'-[(1E)-2-Hydroxy-1,2-diphenylethylidene]benzohydrazide
CAS 104662-64-8C21H18N2O2
N-(1-Methyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)-2-naphthamide
CAS 921999-67-9C21H18N2O2
- 7-(Furan-2-yl)-4-(4-methylphenyl)-8-oxa-5,6-diazatricyclo[7.4.0.0^{2,6}]trideca-1(9),4,10,12-tetraene899728-66-6C21H18N2O2
- 3-(Phenylethynyl)-4-(3,4,5-trimethyl-1H-pyrazol-1-yl)benzoic acid1015844-44-6C21H18N2O2
- N-(1-Methyl-2-oxoindolin-5-yl)-2-(naphthalen-1-yl)acetamide921838-20-2C21H18N2O2
- 2-(4-(3,4-Dihydroisoquinolin-2(1H)-yl)but-2-yn-1-yl)isoindoline-1,3-dione1396784-38-5C21H18N2O2
- (1R,5S)-8-Azabicyclo[3.2.1]oct-2-en-8-yl(3-phenylbenzo[c]isoxazol-5-yl)methanone1705934-30-0C21H18N2O2
- (2-Methoxyphenyl)(5-(pyridin-4-yl)indolin-1-yl)methanone2034613-58-4C21H18N2O2
- (3-Methoxyphenyl)(5-(pyridin-4-yl)indolin-1-yl)methanone2034522-93-3C21H18N2O2
- 6-[3-(Benzyloxy)benzoyl]-5H,6H,7H-pyrrolo[3,4-b]pyridine2309746-64-1C21H18N2O2
- 2-([1,1'-Biphenyl]-4-yloxy)-1-(5H-pyrrolo[3,4-b]pyridin-6(7H)-yl)ethanone2309346-49-2C21H18N2O2
- {4-[5-(5-Methyl-4-phenyl-1H-imidazol-2-yl)furan-2-yl]phenyl}methanol2413874-52-7C21H18N2O2
- N-Phenyl-4-[(2-phenylacetyl)amino]benzamide847571-79-3C21H18N2O2
- N-[3-(2-Oxopyrrolidin-1-yl)phenyl]naphthalene-2-carboxamide941993-38-0C21H18N2O2
- N-benzyl-2-[(E)-N-hydroxy-C-phenylcarbonimidoyl]benzamide59479-63-9C21H18N2O2
- 1,3-Bis(8-quinolyloxy)propane71456-76-3C21H18N2O2
- 5,6-Di(furan-2-yl)-3-propyl-2,2'-bipyridine871798-94-6C21H18N2O2
- Isoxazolo[5,4-b]pyridine, 5-ethyl-6-(4-methoxyphenyl)-3-phenyl-62096-72-4C21H18N2O2
- 4,4'-Methylenebis(3-methyl-5-phenyl-1,2-oxazole)84198-58-3C21H18N2O2
- N-(Furan-2-ylmethyl)-2-(2-phenyl-1H-indol-1-yl)acetamide872335-72-3C21H18N2O2
- 1-(2-(Naphthalen-1-yl)acetyl)indoline-2-carboxamide1099657-01-8C21H18N2O2
- 2-[4-(Benzyloxy)-2-methoxyphenyl]-1H-benzimidazole89469-27-2C21H18N2O2
- 1-[1-(Benzoyloxy)-1-methylethyl]-5-isoquinolineacetonitrile76518-60-0C21H18N2O2
- 4-(4-Isopropyl-phenyl)-6-propargyloxy-quinazoline-2-carbaldehyde927201-97-6C21H18N2O2
- 4-Fmoc-aminomethylpyridine, AldrichCPR1498333-90-6C21H18N2O2
- Methyl{6-[(diphenylmethylidene)amino]pyridin-2-yl}acetate1374575-41-3C21H18N2O2
- 2-((3-(4-Amino-3-methylphenoxy)benzyl)oxy)benzonitrile2101219-25-2C21H18N2O2
- N-Benzylidene-2-hydroxy-2,2-diphenylethanehydrazonic acidC21H18N2O2
- 3-Hydroxy-2-naphthalenecarboxylic acid 2-(1-methyl-3-phenyl-2-propen-1-ylidene)hydrazide304455-22-9C21H18N2O2
- 1-Benzhydryl-3-benzoylurea60758-32-9C21H18N2O2
- N-[(E)-Benzylideneamino]-2-phenoxy-2-phenylacetamideC21H18N2O2
- 1(4H)-Pyridinecarboxylic acid, 4-(1-methyl-1H-indol-3-yl)-, phenyl ester116691-00-0C21H18N2O2
- 2-Naphthalenecarboxamide, 6-cyano-N-[3-(1-methylethoxy)phenyl]-653604-42-3C21H18N2O2
- [7-(Benzyloxy)-1H-benzimidazol-2-yl](phenyl)methanol89521-56-2C21H18N2O2
- 3-(2-Phenylquinoline-4-carbonyl)piperidin-2-one910442-95-4C21H18N2O2
- N-[2-(2,3-Dihydro-1H-indol-2-yl)-phenyl]-2-hydroxy-benzamide677298-38-3C21H18N2O2
- 3-[3-(Benzyloxy)-4-methoxyphenyl]-1H-pyrrolo[2,3-b]pyridine880770-85-4C21H18N2O2
- Ethyl 1-(quinolin-2-ylmethyl)-1H-indole-2-carboxylate1196050-30-2C21H18N2O2
- Methyl 1-(isoquinolin-3-ylmethyl)-5-methyl-1H-indole-7-carboxylate1196051-45-2C21H18N2O2
- Methyl 5-methyl-1-(quinolin-2-ylmethyl)-1H-indole-7-carboxylate1196048-86-8C21H18N2O2
- 3-(2-Methoxyphenyl)-5-(4-methoxyphenyl)-1H-pyrrolo[2,3-b]pyridine875638-64-5C21H18N2O2
- 3-(2-Methoxyphenyl)-5-(3-methoxyphenyl)-1H-pyrrolo[2,3-b]pyridine875638-63-4C21H18N2O2
- [3-(Naphthalen-2-yl)-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl]acetic acid88696-89-3C21H18N2O2
- 4-Methoxy-N-{2-[1-(pyridin-2-yl)ethenyl]phenyl}benzamide58754-27-1C21H18N2O2
- N1-(2-Methylphenyl)-N2-phenyl-1,2-benzenedicarboxamide16497-42-0C21H18N2O2
- (9H-Fluoren-9-yl)methyl [(pyridin-2-yl)methyl]carbamate1498333-88-2C21H18N2O2
- 1,1'-(Propane-1,3-diyl)di(1H-indole-3-carbaldehyde)936939-87-6C21H18N2O2
- Methyl 6-(4-phenyl-6,7-dihydro-5H-cyclopenta[C]pyridin-1-yl)pyridine-2-carboxylate1994277-78-9C21H18N2O2
- 5H-Pyrrolo[3,2-b]pyridin-5-one,1,4-dihydro-4-(4-methoxyphenyl)-1-(phenylmethyl)-677303-18-3C21H18N2O2
- 5H-Pyrrolo[3,2-b]pyridin-5-one,1,4-dihydro-1-[(3-methoxyphenyl)methyl]-4-phenyl-677303-16-1C21H18N2O2
- 2-[(Z)-(2-Hydroxy-1,2-diphenylethylidene)amino]benzamide62758-25-2C21H18N2O2
- 4-[2-Oxo-2-(4-phenoxyphenyl)ethyl]benzene-1-carboximidamide61883-19-0C21H18N2O2
- N~2~,N~3~-Diphenylbicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxamide79632-19-2C21H18N2O2
- 5-(2-Methylphenyl)-3,4-diphenyl-1,3,4-oxadiazolidin-2-one88743-94-6C21H18N2O2
- 5-(3-Methylphenyl)-3,4-diphenyl-1,3,4-oxadiazolidin-2-one88743-95-7C21H18N2O2
- 4-Benzyloxy-2-(2-methoxy-phenyl)-1H-benzoimidazole345662-08-0C21H18N2O2
- 1,3-Bis(4-methoxyphenyl)imidazo[1,5-a]pyridine906668-47-1C21H18N2O2
- 9-Ethyl-6,11-dihydro-8-hydroxy-6,6-dimethyl-11-oxo-5H-benzo[b]carbazole-3-carbonitrile1256584-52-7C21H18N2O2
- 2-Phenyl-1-(2-phenyl-2,3-dihydro-4H-pyrido[3,2-b][1,4]oxazin-4-yl)ethan-1-one89970-33-2C21H18N2O2
- N-(2-Benzamidophenyl)-N-methylbenzamide38182-45-5C21H18N2O2
- 2-(Anilinomethyl)-1-phenyl-3-(pyridin-3-yl)propane-1,3-dione649560-62-3C21H18N2O2
- N-Methyl-N-(4-methylphenyl)-2-nitro-9H-fluoren-9-amine62799-34-2C21H18N2O2
- 4-[2-Oxo-2-(2-phenoxyphenyl)ethyl]benzene-1-carboximidamide62359-73-3C21H18N2O2
- N-(3-Hydroxy-2,3-diphenylaziridin-2-yl)benzamide87671-34-9C21H18N2O2
- 2,3-Diphenyl-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid1706464-34-7C21H18N2O2
- N-(2'-Acetamido-[1,1'-biphenyl]-4-yl)benzamide2203952-44-5C21H18N2O2
- N-(3-(Naphthalen-1-yl)-3,4-dihydro-2H-benzo[e][1,3]oxazin-6-yl)acrylamide1258306-86-3C21H18N2O2
- Benzyl N-[cyano(naphthalen-1-yl)methyl]-N-methylcarbamate2680785-02-6C21H18N2O2
- Benzyl N-(prop-2-yn-1-yl)-N-[(quinolin-2-yl)methyl]carbamate2680778-56-5C21H18N2O2
- (9H-Fluoren-9-yl)methyl 1-cyano-2-azabicyclo[2.1.1]hexane-2-carboxylate2770525-61-4C21H18N2O2
- 4-Methyl-3'-formyl-4'-benzyloxyazobenzene87730-62-9C21H18N2O2
- (9H-Fluoren-9-yl)methyl (3-aminophenyl)carbamate1629477-47-9C21H18N2O2
- 2-(4-Phenylmethoxyphenyl)-7,8-dihydro-3H-quinazolin-4-one908009-88-1C21H18N2O2
- Ethyl 5-methyl-2-phenylpyrazolo[5,1-a]isoquinoline-6-carboxylate1402939-74-5C21H18N2O2
- Allyl 2,2-di(1H-indol-3-yl)acetate1510769-86-4C21H18N2O2
Frequently asked questions
What is the molar mass of C21H18N2O2?
The molar mass of C21H18N2O2 is 330.39 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms and 2 oxygen atoms. The monoisotopic mass is 330.1368 Da.
How many compounds have the formula C21H18N2O2?
CompoundList lists 197 compounds with the molecular formula C21H18N2O2, including 6-(4-Methoxyphenyl)-1-(4-methylbenzyl)-2-oxo-1,2-dihydro-3-pyridinecarbonitrile, 1-(3-(1-Hydroxynaphthalen-2-yl)-5-phenyl-4,5-dihydro-1H-pyrazol-1-yl)ethanone, 5-(Furan-2-yl)-1-(3-methylbenzoyl)-3-phenyl-4,5-dihydro-1H-pyrazole. 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 C21H18N2O2?
C21H18N2O2 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.