Molecular formula
C21H21NO2
218 compounds have this formula on CompoundList.
- Molar mass
- 319.40g/mol
- Monoisotopic mass
- 319.1572Da
- Atoms
- 45
- Elements
- 4
- Rings plus double bonds
- 12
The formula C21H21NO2 describes a molecule made of 21 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom 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 × 2178.97%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 216.63%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 14.39%14.007 × 1 = 14.007 g/mol
- O Oxygen × 210.02%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C21H21NO2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 200 of 218 compounds
4H-1-Benzopyran-4-one, 3-((1-ethyl-1,2,3,4-tetrahydro-6-quinolinyl)methylene)-2,3-dihydro-
C21H21NO2
![Acetamide, N-(2-methylphenyl)-N-[2-(2-naphthalenyloxy)ethyl]- chemical structure, C21H21NO2, CAS 61293-92-3](/s/OSHJDUFZZBSUAB-UHFFFAOYSA-N.svg)
Acetamide, N-(2-methylphenyl)-N-[2-(2-naphthalenyloxy)ethyl]-
CAS 61293-92-3C21H21NO2
![Acetamide, N-(3-methylphenyl)-N-[2-(2-naphthalenyloxy)ethyl]- chemical structure, C21H21NO2, CAS 61293-93-4](/s/FDFRPEJKGZIWQD-UHFFFAOYSA-N.svg)
Acetamide, N-(3-methylphenyl)-N-[2-(2-naphthalenyloxy)ethyl]-
CAS 61293-93-4C21H21NO2
![Acetamide, N-(4-methylphenyl)-N-[2-(2-naphthalenyloxy)ethyl]- chemical structure, C21H21NO2, CAS 61293-94-5](/s/WDKDOCLCEXAAGC-UHFFFAOYSA-N.svg)
Acetamide, N-(4-methylphenyl)-N-[2-(2-naphthalenyloxy)ethyl]-
CAS 61293-94-5C21H21NO2
![3-[(Z)-2-Oxoheptylidene]-2-phenyl-1H-isoindol-1(2H)-one chemical structure, C21H21NO2, CAS 338409-30-6](/s/WVVILSCGJAKXTJ-HKWRFOASSA-N.svg)
3-[(Z)-2-Oxoheptylidene]-2-phenyl-1H-isoindol-1(2H)-one
CAS 338409-30-6C21H21NO2
![2-[(9,10-Methanoanthracen-9(10H)-yl)methyl]-4-methylmorpholin-3-one chemical structure, C21H21NO2, CAS 62686-35-5](/s/RCZHBYACFXLXQX-UHFFFAOYSA-N.svg)
2-[(9,10-Methanoanthracen-9(10H)-yl)methyl]-4-methylmorpholin-3-one
CAS 62686-35-5C21H21NO2
3-(3-tert-Butyl-5-phenoxy-phenyl)-1H-pyridin-2-one
CAS 1206771-42-7C21H21NO2
methanone chemical structure, C21H21NO2, CAS 647841-59-6](/s/NNJCGCPSOAPWST-UHFFFAOYSA-N.svg)
[1-(4-Ethoxyphenyl)-2,5-dimethyl-1H-pyrrol-3-yl](phenyl)methanone
CAS 647841-59-6C21H21NO2
![5-(2-Methylbutan-2-yl)-2-{4-[(prop-2-yn-1-yl)oxy]phenyl}-1,3-benzoxazole chemical structure, C21H21NO2, CAS 648422-78-0](/s/UFSIZEIHJSZWDU-UHFFFAOYSA-N.svg)
5-(2-Methylbutan-2-yl)-2-{4-[(prop-2-yn-1-yl)oxy]phenyl}-1,3-benzoxazole
CAS 648422-78-0C21H21NO2
N-(3-Hydroxy-3-(naphthalen-1-yl)propyl)-2-methylbenzamide
CAS 1421475-56-0C21H21NO2
4-(4-Pentyloxybenzoyl)quinoline
CAS 1706462-91-0C21H21NO2
Ethyl 1-((diphenylmethylene)amino)cyclopent-3-enecarboxylate
CAS 1883345-44-5C21H21NO2
![N-Benzyl-N-[(1-hydroxy-2,3-dihydro-1H-inden-1-yl)methyl]but-2-ynamide chemical structure, C21H21NO2, CAS 2094137-45-6](/s/QNESQRGELWKMOP-UHFFFAOYSA-N.svg)
N-Benzyl-N-[(1-hydroxy-2,3-dihydro-1H-inden-1-yl)methyl]but-2-ynamide
CAS 2094137-45-6C21H21NO2
4(1H)-Pyridinone, 1-methyl-3-phenyl-5-(3-propoxyphenyl)-
CAS 59757-83-4C21H21NO2
1-(Anthracen-9-yl)-3-(morpholin-4-yl)propan-1-one
CAS 47332-32-1C21H21NO2
N-(2-Ethyl-6-methylphenyl)-3-methoxynaphthalene-2-carboxamide
CAS 433947-49-0C21H21NO2
2(1H)-Pyridinone, 4-ethoxy-3,5-dimethyl-1,6-diphenyl-
CAS 60227-84-1C21H21NO2
Propan-2-yl benzyl(naphthalen-1-yl)carbamate
CAS 88343-37-7C21H21NO2
N-(2,6-Dimethylphenyl)-2-(naphthalen-1-yloxy)propanamide
CAS 928986-11-2C21H21NO2
![2-Ethoxy-N-[1-(2-naphthalenyl)ethyl]benzamide chemical structure, C21H21NO2, CAS 1061605-30-8](/s/FTESKFONBOFCNH-UHFFFAOYSA-N.svg)
2-Ethoxy-N-[1-(2-naphthalenyl)ethyl]benzamide
CAS 1061605-30-8C21H21NO2
![5-Hexyl-4-hydroxy-6H-pyrido[3,2,1-jk]carbazol-6-one chemical structure, C21H21NO2, CAS 654052-42-3](/s/UYNIAVHLYAUTNI-UHFFFAOYSA-N.svg)
5-Hexyl-4-hydroxy-6H-pyrido[3,2,1-jk]carbazol-6-one
CAS 654052-42-3C21H21NO2
![N-[(2,5-Dimethylfuran-3-yl)methyl]-2,2-diphenylacetamide chemical structure, C21H21NO2, CAS 1351648-17-3](/s/GNKMCAMWCWNGIL-UHFFFAOYSA-N.svg)
N-[(2,5-Dimethylfuran-3-yl)methyl]-2,2-diphenylacetamide
CAS 1351648-17-3C21H21NO2
4-((Benzhydrylamino)methyl)-2-methoxyphenol
CAS 878894-17-8C21H21NO2
1-Cyano-4-phenyl-2-(2-phenylethyl)but-1-en-1-yl acetate
CAS 62115-07-5C21H21NO2
- N-(2-Methoxy-2-(o-tolyl)ethyl)-1-naphthamide1448065-57-3C21H21NO2
- Ethyl 3-benzyl-2,4-dimethylquinoline-6-carboxylate1599529-21-1C21H21NO2
- (2E)-1-[3-(2,3-Dihydro-1-benzofuran-5-yl)pyrrolidin-1-yl]-3-phenylprop-2-en-1-one2097941-03-0C21H21NO2
- (R)-1-(Morpholino(phenyl)methyl)naphthalen-2-ol1260616-25-8C21H21NO2
- 1-Propanone, 3,3'-(2-propynylimino)bis[1-phenyl-67280-64-2C21H21NO2
- 1-(Cyclohexylamino)-4-methylanthracene-9,10-dione373616-87-6C21H21NO2
- 2-Methyl-2-{[(pyren-1-yl)methyl]amino}propane-1,3-diol96403-92-8C21H21NO2
- 2-Butanone, 4-[(4-methoxyphenyl)amino]-4-(1-naphthalenyl)-, (4S)-332904-99-1C21H21NO2
- Ethanone, 1-[2-phenyl-1-(tetrahydro-2H-pyran-2-yl)-1H-indol-3-yl]-62367-65-1C21H21NO2
- 3-(Cyclohexylamino)-2-phenyl-4H-1-benzopyran-4-one37816-09-4C21H21NO2
- {3-[(3-Methoxyphenyl)(4-methylphenyl)amino]phenyl}methanol650600-58-1C21H21NO2
- Ethyl 4-phenyl-2-propylquinoline-3-carboxylate1072913-34-8C21H21NO2
- 2,6-Bis(4-methoxy-2-methylphenyl)pyridine350601-25-1C21H21NO2
- 4-Cyanophenyl 3-(4-pentylphenyl)prop-2-enoate56131-58-9C21H21NO2
- 4-Methoxy-1-methyl-3,5-bis(4-methylphenyl)pyridin-2(1H)-one920490-77-3C21H21NO2
- 2,6-Bis(4-methoxy-3-methylphenyl)pyridine697284-15-4C21H21NO2
- (E)-1-(4-Ethoxynaphthalen-1-yl)-N-(4-ethoxyphenyl)methanimine88123-24-4C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(2-methylpent-4-yn-2-yl)carbamate2299088-70-1C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(3-methylpent-1-yn-3-yl)carbamate1811511-30-4C21H21NO2
- 8-((5-Phenylpentyl)oxy)quinoline-5-carbaldehyde1820856-55-0C21H21NO2
- 5-((5-Phenylpentyl)oxy)quinoline-8-carbaldehyde1820856-53-8C21H21NO2
- (6-{4'-[(Propan-2-yl)oxy][1,1'-biphenyl]-4-yl}pyridin-3-yl)methanol153486-76-1C21H21NO2
- 4'-(Benzyloxy)-3-ethoxy-[1,1'-biphenyl]-4-amine2990498-01-4C21H21NO2
- 3-(Benzyloxy)-5-[(benzyloxy)methyl]-2-methylpyridine59237-44-4C21H21NO2
- 2-{[Ethyl(4-methylphenyl)amino]methyl}-3-methylnaphthalene-1,4-dione52291-56-2C21H21NO2
- 2-[(Hex-5-en-1-yl)oxy]-4,5-diphenyl-1,3-oxazole87696-42-2C21H21NO2
- N-Cyclohexyl-N-methyl-9-oxo-9H-fluorene-2-carboxamide876762-47-9C21H21NO2
- (E)-1,4-Diphenyl-2-piperidin-1-ylbut-2-ene-1,4-dione5468-69-9C21H21NO2
- 2-(3,5-Dimethylphenyl)-6-(3-ethyl-5-hydroxyphenyl)pyridin-4(1H)-one89945-39-1C21H21NO2
- Ethyl 2,5-dimethyl-1,4-diphenyl-1H-pyrrole-3-carboxylate13901-83-2C21H21NO2
- 4-{2-[3-(Benzyloxy)-5-methoxyphenyl]ethyl}pyridine62205-25-8C21H21NO2
- Phenyl 6-ethyl-2-(2-methylphenyl)pyridine-1(2H)-carboxylate651053-69-9C21H21NO2
- Phenyl 2-ethyl-4-(2-methylphenyl)pyridine-1(4H)-carboxylate651053-68-8C21H21NO2
- 3-{2-[3-(Benzyloxy)-5-methoxyphenyl]ethyl}pyridine63231-90-3C21H21NO2
- 1-(2-Hydroxy-2,2-diphenylethyl)-2,6-dimethylpyridin-4(1H)-one62435-04-5C21H21NO2
- Ethyl 3-(1-benzyl-1H-indol-7-yl)but-2-enoate617711-24-7C21H21NO2
- 4-Butylphenyl 2-cyano-3-(4-methylphenyl)prop-2-enoate61478-66-8C21H21NO2
- 4-[(S)-Phenyl{[(1S)-1-phenylethyl]amino}methyl]benzene-1,3-diol878674-91-0C21H21NO2
- (9H-Fluoren-9-yl)methyl 3-methylidenepiperidine-1-carboxylate1823292-70-1C21H21NO2
- 4-Acetyl-5-(4-methylanilino)-1,6-dihydro[1,1'-biphenyl]-3(2H)-one143768-20-1C21H21NO2
- 4-Methyl-8-[4-[(tetrahydro-2H-pyran-2-yl)oxy]phenyl]quinoline1401819-17-7C21H21NO2
- 7-Methyl-8-[4-[(tetrahydro-2H-pyran-2-yl)oxy]phenyl]quinoline1401818-79-8C21H21NO2
- (9H-Fluoren-9-yl)methyl N-[(3S)-4-methylpent-1-yn-3-yl]carbamate959158-62-4C21H21NO2
- 3'-(Benzyloxy)-4-ethoxy-[1,1'-biphenyl]-3-amine2988130-43-2C21H21NO2
- 4'-(Benzyloxy)-4-ethoxy-[1,1'-biphenyl]-3-amine2989218-82-6C21H21NO2
- Benzyl 4-(4-ethynylphenyl)piperidine-1-carboxylate2680755-42-2C21H21NO2
- (9H-Fluoren-9-yl)methyl 2-ethenylpyrrolidine-1-carboxylate2680745-65-5C21H21NO2
- Benzyl N-[1-(4-ethynylphenyl)cyclopentyl]carbamate2680894-95-3C21H21NO2
- Benzyl 2-(4-ethynylphenyl)piperidine-1-carboxylate2680686-25-1C21H21NO2
- Benzyl N-(prop-2-yn-1-yl)-N-(1,2,3,4-tetrahydronaphthalen-1-yl)carbamate2680818-05-5C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(but-3-yn-2-yl)-N-ethylcarbamate2770499-52-8C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(hex-5-yn-3-yl)carbamate2157987-45-4C21H21NO2
- (9H-Fluoren-9-yl)methyl N-cyclopropyl-N-(prop-2-en-1-yl)carbamate2770494-53-4C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(prop-2-yn-1-yl)-N-(propan-2-yl)carbamate2275408-75-6C21H21NO2
- (9H-Fluoren-9-yl)methyl N-methyl-N-(pent-4-yn-2-yl)carbamate2770498-26-3C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(1-cyclopropylprop-2-en-1-yl)carbamate2770529-67-2C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(1-methyl-3-methylidenecyclobutyl)carbamate2770546-30-8C21H21NO2
- (9H-Fluoren-9-yl)methyl (3R)-3-ethenylpyrrolidine-1-carboxylate2770451-26-6C21H21NO2
- (9H-Fluoren-9-yl)methyl N-[(3R)-4-methylpent-1-yn-3-yl]carbamate2770452-76-9C21H21NO2
- (9H-Fluoren-9-yl)methyl N-[(3-methylidenecyclobutyl)methyl]carbamate2770554-93-1C21H21NO2
- (9H-Fluoren-9-yl)methyl N-[(3E)-hexa-3,5-dien-1-yl]carbamate2165236-46-2C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(4-methylpent-1-yn-3-yl)carbamate2275252-44-1C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(prop-2-yn-1-yl)-N-propylcarbamate2157922-15-9C21H21NO2
- (9H-Fluoren-9-yl)methyl (3S)-3-ethenylpyrrolidine-1-carboxylate2770452-36-1C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(1-ethenylcyclobutyl)carbamate2770555-35-4C21H21NO2
- (9H-Fluoren-9-yl)methyl N-methyl-N-(pent-4-yn-1-yl)carbamate2770518-92-6C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(2-ethylbut-3-yn-1-yl)carbamate2770486-45-6C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(hex-5-yn-1-yl)carbamate2274857-24-6C21H21NO2
- (9H-Fluoren-9-yl)methyl N-[1-(prop-2-en-1-yl)cyclopropyl]carbamate2770498-72-9C21H21NO2
- (9H-Fluoren-9-yl)methyl N-methyl-N-(3-methylidenecyclobutyl)carbamate2770546-25-1C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(3-ethenylcyclobutyl)carbamate2770518-15-3C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(2,2-dimethylbut-3-yn-1-yl)carbamate2770533-80-5C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(but-3-yn-1-yl)-N-ethylcarbamate2275246-70-1C21H21NO2
- (9H-Fluoren-9-yl)methyl N-(hex-1-yn-3-yl)carbamate2151296-71-6C21H21NO2
- (9H-Fluoren-9-yl)methyl N-methyl-N-(2-methylbut-3-yn-2-yl)carbamate2770494-19-2C21H21NO2
- N-[(5-Phenylfuran-2-yl)methyl]-2,3,4,5-tetrahydro-1-benzoxepin-5-amine1839388-14-5C21H21NO2
Frequently asked questions
What is the molar mass of C21H21NO2?
The molar mass of C21H21NO2 is 319.40 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 2 oxygen atoms. The monoisotopic mass is 319.1572 Da.
How many compounds have the formula C21H21NO2?
CompoundList lists 218 compounds with the molecular formula C21H21NO2, including 4H-1-Benzopyran-4-one, 3-((1-ethyl-1,2,3,4-tetrahydro-6-quinolinyl)methylene)-2,3-dihydro-, Acetamide, N-(2-methylphenyl)-N-[2-(2-naphthalenyloxy)ethyl]-, Acetamide, N-(3-methylphenyl)-N-[2-(2-naphthalenyloxy)ethyl]-. 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 C21H21NO2?
C21H21NO2 has a degree of unsaturation of 12. 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.