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 1 to 100 of 197 compounds
2-(3-(Benzyloxy)phenyl)-2,3-dihydroquinazolin-4(1H)-one
CAS 173555-78-7C21H18N2O2
2-(1-Naphthyloxy)-N'-(3-phenyl-2-propenylidene)acetohydrazide
CAS 307941-85-1C21H18N2O2
(4bS,8aR,10aS)-10a-Ethynyl-4b,8,8-trimethyl-3,7-dioxo-9,10-dihydro-8aH-phenanthrene-2,6-dicarbonitrile
CAS 936475-62-6C21H18N2O2
2-Benzamido-N-benzylbenzamide
CAS 70553-46-7C21H18N2O2
![N-[Phenyl(phenylformamido)methyl]benzamide chemical structure, C21H18N2O2, CAS 14328-15-5](/s/VFIJOUHBZUMVCW-UHFFFAOYSA-N.svg)
N-[Phenyl(phenylformamido)methyl]benzamide
CAS 14328-15-5C21H18N2O2
![(-)-2,2'-Methylenebis[(3aS,8aR)-3a,8a-dihydro-8H-indeno[1,2-d]oxazole] chemical structure, C21H18N2O2, CAS 175166-49-1](/s/BDHSVQLSNIGJNC-JYWFKMLOSA-N.svg)
(-)-2,2'-Methylenebis[(3aS,8aR)-3a,8a-dihydro-8H-indeno[1,2-d]oxazole]
CAS 175166-49-1C21H18N2O2
(+)-2,2'-Methylenebis((3aR,8aS)-3a,8a-dihydro-8H-indeno(1,2-d)oxazole)
CAS 180186-94-1C21H18N2O2
N'-(2-Furylmethylene)-2,2-diphenylcyclopropanecarbohydrazide
CAS 293766-53-7C21H18N2O2
![N-[3-(Benzoylamino)phenyl]benzeneacetamide chemical structure, C21H18N2O2, CAS 423150-57-6](/s/RDNOKGATLPPIGS-UHFFFAOYSA-N.svg)
N-[3-(Benzoylamino)phenyl]benzeneacetamide
CAS 423150-57-6C21H18N2O2
![N-[2-(2,5-Dimethylbenzoyl)phenyl]pyridine-2-carboxamide chemical structure, C21H18N2O2, CAS 5325-21-3](/s/OWQGUQADTXKGCH-UHFFFAOYSA-N.svg)
N-[2-(2,5-Dimethylbenzoyl)phenyl]pyridine-2-carboxamide
CAS 5325-21-3C21H18N2O2
AG-205/36483053
CAS 63384-41-8C21H18N2O2
N-(4-Acetamidophenyl)-2-phenylbenzamide
CAS 694525-38-7C21H18N2O2
1-(1H-Indol-3-yl)-2-(4-phenyl-5,6-dihydropyridin-1(2H)-yl)ethane-1,2-dione
CAS 18272-10-1C21H18N2O2
3-(3-Acetylphenyl)-1,1-diphenylurea
CAS 692762-07-5C21H18N2O2
![2-[(Diphenylacetyl)amino]benzamide chemical structure, C21H18N2O2, CAS 331240-38-1](/s/ZDNHADWQAWCRBX-UHFFFAOYSA-N.svg)
2-[(Diphenylacetyl)amino]benzamide
CAS 331240-38-1C21H18N2O2
![2-[4-(Pyridin-4-ylmethyl)phenyl]-3a,4,7,7a-tetrahydro-1H-4,7-methanoisoindole-1,3(2H)-dione chemical structure, C21H18N2O2, CAS 1005281-82-2](/s/RWUJKUKQJZJHGW-UHFFFAOYSA-N.svg)
2-[4-(Pyridin-4-ylmethyl)phenyl]-3a,4,7,7a-tetrahydro-1H-4,7-methanoisoindole-1,3(2H)-dione
CAS 1005281-82-2C21H18N2O2
N-(2-Acetamidophenyl)-2-phenylbenzamide
CAS 695167-10-3C21H18N2O2
1-(4-Methylphenyl)-3-(naphthalen-1-ylamino)pyrrolidine-2,5-dione
CAS 1008604-10-1C21H18N2O2
![2-(1-{[2-(1H-Indol-3-yl)ethyl]amino}ethylidene)-1H-indene-1,3(2H)-dione chemical structure, C21H18N2O2, CAS 337340-62-2](/s/DVEWORXUXLDJSZ-UHFFFAOYSA-N.svg)
2-(1-{[2-(1H-Indol-3-yl)ethyl]amino}ethylidene)-1H-indene-1,3(2H)-dione
CAS 337340-62-2C21H18N2O2
N'-Benzylidene-2-((1,1'-biphenyl)-4-yloxy)acetohydrazide
CAS 303065-96-5C21H18N2O2
2-(2-Naphthyloxy)-N'-(3-phenyl-2-propenylidene)acetohydrazide
CAS 307941-80-6C21H18N2O2
![N-{2-[(Allylamino)carbonyl]phenyl}-1-naphthamide chemical structure, C21H18N2O2, CAS 690683-83-1](/s/QUDWGOOVUDLRRA-UHFFFAOYSA-N.svg)
N-{2-[(Allylamino)carbonyl]phenyl}-1-naphthamide
CAS 690683-83-1C21H18N2O2
![2-[(3-Methylbenzoyl)amino]-N-phenylbenzamide chemical structure, C21H18N2O2, CAS 314281-96-4](/s/CNSCXCLIQHRYPM-UHFFFAOYSA-N.svg)
2-[(3-Methylbenzoyl)amino]-N-phenylbenzamide
CAS 314281-96-4C21H18N2O2
N-Benzylidene-2-phenoxy-2-phenylethanehydrazonato(3-)
CAS 32121-28-1C21H18N2O2
- N-(3-Acetamidophenyl)-4-phenylbenzamide346723-00-0C21H18N2O2
- (E)-Ethyl 3-(1-benzyl-1H-indol-3-yl)-2-cyanoacrylate1637288-77-7C21H18N2O2
- 4-[(Diphenylacetyl)amino]benzamide349644-58-2C21H18N2O2
- N-[4-(Acetylamino)phenyl]-4-biphenylcarboxamide303212-19-3C21H18N2O2
- 2-(3-Hydroxyphenyl)-3-(4-methylphenyl)-1,2-dihydroquinazolin-4-one361186-96-1C21H18N2O2
- 2-(2,3,4,9-Tetrahydro-1H-carbazol-6-ylmethyl)-1H-isoindole-1,3(2H)-dione68375-17-7C21H18N2O2
- 1 suppliersUcph-102, >=98% (hplc)1229591-56-3C21H18N2O2
- 3-(4-Methoxyphenyl)-2-phenyl-1,2-dihydroquinazolin-4-one6152-86-9C21H18N2O2
- 2-(5-Methyl-2-furyl)-5-phenyl-1,10b-dihydropyrazolo[1,5-c][1,3]benzoxazine325831-45-6C21H18N2O2
- 2-Benzamido-N-(2-methylphenyl)benzamide94871-75-7C21H18N2O2
- 1-Carbazol-9-yl-2-(4-methoxyanilino)ethanone522659-66-1C21H18N2O2
- N-(4-Ethylphenyl)-2-(2-oxobenzo[cd]indol-1(2H)-yl)acetamide565174-39-2C21H18N2O2
- Bis(3a,8a-dihydro-8H-indeno[1,2-d]oxazol-2-yl)methane1212324-65-6C21H18N2O2
- 2-[2-(Benzyloxy)phenyl]-1,2,3,4-tetrahydroquinazolin-4-one332073-52-6C21H18N2O2
- 3-[2-(Benzoxazol-2-yl)ethyl]-5-phenyl-6-methylpyridin-2(1H)-one147440-26-4C21H18N2O2
- 3-Hydroxy-N-[2-(1H-indol-3-yl)ethyl]naphthalene-2-carboxamide949782-17-6C21H18N2O2
- 3-(3,5-Dimethoxyphenyl)-1-phenylimidazo[1,5-a]pyridine305372-73-0C21H18N2O2
- N'-[1-(2-Hydroxyphenyl)ethylidene]-4-biphenylcarbohydrazide306325-74-6C21H18N2O2
- 1-(2,3-Dimethylindol-1-yl)-2-quinolin-8-yloxyethanone522659-42-3C21H18N2O2
- 5-(3,4-Dimethoxyphenyl)-3-phenyl-1H-pyrrolo[2,3-b]pyridine875638-40-7C21H18N2O2
- N-(3-Benzamidophenyl)-2-methylbenzamide586339-27-7C21H18N2O2
- (9H-Fluoren-9-yl)methyl (4-aminophenyl)carbamate205688-13-7C21H18N2O2
- 2-Benzamido-N-(4-methylphenyl)benzamide94871-76-8C21H18N2O2
- 2,5-Dimethyl-3-(4-quinolinyl)-1H-indole-1-acetic acid629645-44-9C21H18N2O2
- 5-(4-Cyanophenyl)-3-[(Propan-2-Yl)oxy]naphthalene-2-Carboxamide2098492-43-2C21H18N2O2
- 3-(3-Methylbenzyl)-1-(quinolin-2-yl)pyrrolidine-2,5-dione333324-62-2C21H18N2O2
- N1-([1,1'-Biphenyl]-2-yl)-N2-benzyloxalamide1909333-78-3C21H18N2O2
- Methanone, (7-ethyl-5-methoxyimidazo[1,2-a]quinolin-2-yl)phenyl-84357-04-0C21H18N2O2
- N,N'-(4-Methylbenzene-1,3-diyl)dibenzamide30716-47-3C21H18N2O2
- 3-(4-Methylbenzyl)-1-(quinolin-2-yl)pyrrolidine-2,5-dione330951-14-9C21H18N2O2
- 2-[(4-Phenylmethoxyphenyl)methylideneamino]benzamide5320-16-1C21H18N2O2
- 2-Amino-7-methyl-4-(naphthalen-2-yl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile414899-70-0C21H18N2O2
- N-Naphthalen-2-yl-5-oxo-1-phenylpyrrolidine-3-carboxamide332404-08-7C21H18N2O2
- 2-(4-(Pyrrolidin-1-yl)phenyl)pyrano[3,2-g]indol-4(9H)-one1400093-71-1C21H18N2O2
- n,n'-(4-Methylbenzene-1,2-diyl)dibenzamide5467-06-1C21H18N2O2
- N-(1-Ethyl-2-oxo-1,2-dihydrobenzo[cd]indol-6-yl)-2-methylbenzamide307509-44-0C21H18N2O2
- 3-Benzoyl-N-(4-methyl-2-pyridinyl)benzeneacetamide59512-36-6C21H18N2O2
- ((3aR,8aS)-8,8a-Dihydro-3aH-indeno[1,2-d]oxazol-2-yl)((3aS,8aR)-8,8a-dihydro-3aH-indeno[1,2-d]oxazol-2-yl)methane1360771-89-6C21H18N2O2
- N-[4-(Acetylamino)phenyl]-3-(1-naphthyl)acrylamide328026-61-5C21H18N2O2
- Ethyl 2-cyano-3-(1-methyl-2-phenyl-1H-indol-3-yl)acrylate102311-49-9C21H18N2O2
- N-Naphthalen-1-yl-5-oxo-1-phenylpyrrolidine-3-carboxamide331428-24-1C21H18N2O2
- N,N',2-triphenylpropanediamide10256-14-1C21H18N2O2
- 4-({(E)-[4-(Benzyloxy)phenyl]methylidene}amino)benzamide5260-60-6C21H18N2O2
- 4-[(E)-{[2-(Benzyloxy)phenyl]methylidene}amino]benzamide5319-76-6C21H18N2O2
- N-{2-Ethyl-3-oxo-2-azatricyclo[6.3.1.0^{4,12}]dodeca-1(11),4(12),5,7,9-pentaen-9-yl}-2-phenylacetamide313405-17-3C21H18N2O2
- 1-(3-Acetylphenyl)-3-(2-phenylphenyl)urea706777-12-0C21H18N2O2
- 2-Methyl-N-[2-(1-naphthyl)-1,3-benzoxazol-5-yl]propanamide424816-99-9C21H18N2O2
- N-Benzyl-N-methyl-2-(2-oxobenzo[cd]indol-1(2H)-yl)acetamide677768-59-1C21H18N2O2
- 3-(tert-Butyl)-2-(phenylcarbonyl)indeno[3,2-C]pyrazol-4-one1022454-71-2C21H18N2O2
- N-(1-Ethyl-2-oxo-1,2-dihydrobenzo[cd]indol-6-yl)-4-methylbenzamide312922-72-8C21H18N2O2
- [(Z)-[Amino(phenyl)methylidene]amino] 2,2-diphenylacetate5329-96-4C21H18N2O2
- 2-Hydroxy-2,2-diphenyl-N'-[(E)-phenylmethylidene]acetohydrazide6976-30-3C21H18N2O2
- (Z)-3-Methyl-4-((2-methyl-2H-chromen-3-yl)methylene)-1-phenyl-1H-pyrazol-5(4H)-one867136-62-7C21H18N2O2
- (4S,5R)-2-(6-Methoxypyridin-2-yl)-4,5-diphenyl-4,5-dihydrooxazole2417321-41-4C21H18N2O2
- Hydrazine, 1,2-dibenzoyl-1-benzyl-24664-22-0C21H18N2O2
- N-(4-Methylbenzyl)-3-(1H-pyrrol-1-yl)-1-benzofuran-2-carboxamide866018-37-3C21H18N2O2
- 2-Benzyl-6-(dimethylamino)-1H-benzo[de]isoquinoline-1,3(2H)-dione134319-07-6C21H18N2O2
- 4-(4-Methylphenyl)-5-oxo-2-(1H-pyrrol-1-yl)-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile339100-43-5C21H18N2O2
- N-(1-Ethyl-2-oxo-1,2-dihydrobenzo[cd]indol-6-yl)-3-methylbenzamide314053-38-8C21H18N2O2
- 3-[(Diphenylacetyl)amino]benzamide924139-75-3C21H18N2O2
- (9H-Fluoren-9-yl)methyl (pyridin-3-ylmethyl)carbamate1498333-89-3C21H18N2O2
- Pyrido(2,1-a)isoindole-1-carboxamide, 4,6-dihydro-N,N-dimethyl-4-oxo-3-phenyl-141388-85-4C21H18N2O2
- (E)-3-Phenyl-N-(3-phenylmethoxypyridin-2-yl)prop-2-enamide1025677-89-7C21H18N2O2
- N'-[(1Z)-(4-Methylphenyl)methylidene]-1H,2H-naphtho[2,1-b]furan-2-carbohydrazide672949-62-1C21H18N2O2
- N-[3-(2-Oxopyrrolidin-1-yl)phenyl]naphthalene-1-carboxamide941993-35-7C21H18N2O2
- 2H-Pyran-3-carbonitrile, 6-(2-naphthalenyl)-2-oxo-4-(1-piperidinyl)-518308-80-0C21H18N2O2
- 2H-Pyran-3-carbonitrile, 6-(1-naphthalenyl)-2-oxo-4-(1-piperidinyl)-454703-35-6C21H18N2O2
- 2,3-Diphenyl-1,2,3,4-tetrahydroquinoxaline-5-carboxylic acid946386-69-2C21H18N2O2
- 2-(3,4-Dimethoxyphenyl)-1-phenyl-1H-benzimidazole2562-68-7C21H18N2O2
- 2-Phenoxymethyl-7-phenylmethoxy-1H-benzimidazole1215342-45-2C21H18N2O2
- N'-[1-(4-Hydroxyphenyl)ethylidene]-4-biphenylcarbohydrazide316135-97-4C21H18N2O2
- N-(2-Methylbenzyl)-2-(2-oxobenzo[cd]indol-1(2H)-yl)acetamide667880-09-3C21H18N2O2
- 3-Benzamido-N-(2-methylphenyl)benzamide14315-22-1C21H18N2O2
- (Z)-3-(2,5-Dimethoxyphenyl)-2-(4-pyrrol-1-ylphenyl)prop-2-enenitrile866019-97-8C21H18N2O2
- (Z)-3-(3,4-Dimethoxyphenyl)-2-(4-pyrrol-1-ylphenyl)prop-2-enenitrile866020-02-2C21H18N2O2
- N'-(Diphenylmethylene)-2-phenoxyacetohydrazide320423-94-7C21H18N2O2
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 2-(3-(Benzyloxy)phenyl)-2,3-dihydroquinazolin-4(1H)-one, 2-(1-Naphthyloxy)-N'-(3-phenyl-2-propenylidene)acetohydrazide, (4bS,8aR,10aS)-10a-Ethynyl-4b,8,8-trimethyl-3,7-dioxo-9,10-dihydro-8aH-phenanthrene-2,6-dicarbonitrile. 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.