Molecular formula
C21H18N2O
102 compounds have this formula on CompoundList.
- Molar mass
- 314.39g/mol
- Monoisotopic mass
- 315.1453Da
- Atoms
- 42
- Elements
- 4
- Rings plus double bonds
- 14
The formula C21H18N2O describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms and 1 oxygen atom. 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 × 2180.23%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 185.77%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 28.91%14.007 × 2 = 28.014 g/mol
- O Oxygen × 15.09%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C21H18N2O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 102 compounds
3-(4-Dimethylaminonaphthalen-1-ylmethylene)-1,3-dihydroindol-2-one
CAS 163655-37-6C21H18N2O
1-Benzyl-2-(4-methoxyphenyl)benzimidazole
CAS 56463-47-9C21H18N2O
3-Benzyl-2-phenyl-1,2-dihydroquinazolin-4-one
CAS 16285-33-9C21H18N2O
(E)-3-(4-Phenylphenyl)-N-(pyridin-3-ylmethyl)prop-2-enamide
CAS 60520-94-7C21H18N2O
![2-[(E)-2-(Furan-2-yl)ethenyl]-1-[(4-methylphenyl)methyl]benzimidazole chemical structure, C21H18N2O, CAS 1164479-40-6](/s/RPKNACRNFMQMPD-OUKQBFOZSA-N.svg)
2-[(E)-2-(Furan-2-yl)ethenyl]-1-[(4-methylphenyl)methyl]benzimidazole
CAS 1164479-40-6C21H18N2O
2-(1,5-Diphenyl-4,5-dihydro-1H-pyrazol-3-yl)phenol
CAS 6956-41-8C21H18N2O
2-Benzyl-3-(4-hydroxymethylphenyl)indazole
CAS 886755-63-1C21H18N2O
![Imidazo[1,2-a]pyridin-2(3H)-one, 3,3-bis(phenylmethyl)- chemical structure, C21H18N2O, CAS 324077-62-5](/s/AGKKYNURMHHCFP-UHFFFAOYSA-N.svg)
Imidazo[1,2-a]pyridin-2(3H)-one, 3,3-bis(phenylmethyl)-
CAS 324077-62-5C21H18N2O
1,2-Dihydro-2-diphenylmethyl-4(3H)-quinazolinone
CAS 18964-21-1C21H18N2O
1,3-Dibenzylbenzimidazol-2-one
CAS 59103-39-8C21H18N2O
alpha-Phenyl-1-(phenylmethyl)-1H-benzimidazole-2-methanol
CAS 147-64-8C21H18N2O
![2-[(1,2,3,4-Tetrahydroisoquinolin-2-yl)methyl]-2-azatricyclo[6.3.1.0^{4,12}]dodeca-1(12),4,6,8,10-pentaen-3-one chemical structure, C21H18N2O, CAS 448222-78-4](/s/OTLNCOVNMYATPA-UHFFFAOYSA-N.svg)
2-[(1,2,3,4-Tetrahydroisoquinolin-2-yl)methyl]-2-azatricyclo[6.3.1.0^{4,12}]dodeca-1(12),4,6,8,10-pentaen-3-one
CAS 448222-78-4C21H18N2O
(3-Methyl-5-styryl-isoxazol-4-yl)-(3-phenyl-allylidene)-amine
CAS 88584-39-8C21H18N2O
N'-(2-Methyl-3-phenyl-2-propenylidene)-1-naphthohydrazide
CAS 544422-18-6C21H18N2O
2-(4-Methylphenyl)-3-phenyl-1,2-dihydroquinazolin-4-one
CAS 351505-16-3C21H18N2O
1-Benzyl-2-(phenoxymethyl)benzimidazole
CAS 333746-94-4C21H18N2O
![N-Phenyl-5,6-dihydrobenzo[b][1]benzazepine-11-carboxamide chemical structure, C21H18N2O, CAS 333434-38-1](/s/GPMGSIDUFRGIAS-UHFFFAOYSA-N.svg)
N-Phenyl-5,6-dihydrobenzo[b][1]benzazepine-11-carboxamide
CAS 333434-38-1C21H18N2O
(1-Methyl-1H-benzimidazol-2-yl)(diphenyl)methanol
CAS 1238-45-5C21H18N2O
![N-[(2-Methyl-1H-indol-5-yl)methyl]naphthalene-2-carboxamide chemical structure, C21H18N2O, CAS 852136-59-5](/s/SXOCYPUERHLTMC-UHFFFAOYSA-N.svg)
N-[(2-Methyl-1H-indol-5-yl)methyl]naphthalene-2-carboxamide
CAS 852136-59-5C21H18N2O
![5-Methyl-2-[(4-phenylphenoxy)methyl]imidazo[1,2-a]pyridine chemical structure, C21H18N2O, CAS 302935-13-3](/s/RNPAEYMBONIGAB-UHFFFAOYSA-N.svg)
5-Methyl-2-[(4-phenylphenoxy)methyl]imidazo[1,2-a]pyridine
CAS 302935-13-3C21H18N2O
N'-(3-Methylbenzylidene)-4-biphenylcarbohydrazide
CAS 5313-19-9C21H18N2O
![2-[Methyl(2-pyridin-2-ylethyl)amino]fluoren-9-one chemical structure, C21H18N2O, CAS 5459-47-2](/s/SVDZPIVNFBEDFQ-UHFFFAOYSA-N.svg)
2-[Methyl(2-pyridin-2-ylethyl)amino]fluoren-9-one
CAS 5459-47-2C21H18N2O
(1-Benzylimidazol-2-yl)-naphthalen-1-ylmethanol
CAS 292052-54-1C21H18N2O
![3-Cyclopropyl-2-(4-methoxyphenyl)-3H-naphtho[1,2-D]imidazole chemical structure, C21H18N2O, CAS 88842-31-3](/s/WAXAFYWXWDEWER-UHFFFAOYSA-N.svg)
3-Cyclopropyl-2-(4-methoxyphenyl)-3H-naphtho[1,2-D]imidazole
CAS 88842-31-3C21H18N2O
- 1-(2-Phenoxyethyl)-2-phenylbenzimidazole612047-13-9C21H18N2O
- 2-(4-Methoxyphenyl)-3-(prop-1-EN-2-yl)-3H-naphtho[1,2-D]imidazole88842-34-6C21H18N2O
- (E)-2-(2-(Furan-2-yl)vinyl)-1-(1-phenylethyl)-1H-benzo[d]imidazole1053059-03-2C21H18N2O
- (R)-4-Benzyl-2-(6-phenylpyridin-2-yl)-4,5-dihydrooxazole2757082-55-4C21H18N2O
- N-(10,11-Dihydro-5H-dibenzo[b,f]azepin-3-yl)benzamide352563-62-3C21H18N2O
- 2-(Naphthalen-2-yloxymethyl)-1-prop-2-enylbenzimidazole380879-41-4C21H18N2O
- 1-Allyl-2-((naphthalen-1-yloxy)methyl)-1H-benzo[d]imidazole381683-03-0C21H18N2O
- N'-(2-Methylbenzylidene)-4-biphenylcarbohydrazide303758-29-4C21H18N2O
- N'-[1-(4-Biphenylyl)ethylidene]benzohydrazide39575-19-4C21H18N2O
- 2-Methyl-7-toluidinoquinacridone101904-53-4C21H18N2O
- (4S,5R)-2-(6-Methylpyridin-2-yl)-4,5-diphenyl-4,5-dihydrooxazole2411385-99-2C21H18N2O
- (E)-2-(2-(Furan-2-yl)vinyl)-1-phenethyl-1H-benzo[d]imidazole685097-74-9C21H18N2O
- 3-[(E)-2-Phenylethenyl]-2,3,4,5-tetrahydro-1H-dibenzo[b,e][1,4]diazepin-1-one879624-42-7C21H18N2O
- Calindol amide374933-28-5C21H18N2O
- (4R,5S)-2-(6-Methylpyridin-2-yl)-4,5-diphenyl-4,5-dihydrooxazole2417321-37-8C21H18N2O
- (S)-4-Benzyl-2-(6-phenylpyridin-2-yl)-4,5-dihydrooxazole1509929-22-9C21H18N2O
- 3-Pyridinecarboxamide, N-(10,11-dihydro-5H-dibenzo(a,d)cyclohepten-5-yl)-26863-98-9C21H18N2O
- 3-Naphthalen-1-yl-2-propylquinazolin-4-one381683-60-9C21H18N2O
- (E)-N-(6-Methylpyridin-2-yl)-2,3-diphenylprop-2-enamide54532-03-5C21H18N2O
- 4-Pyridinecarboxamide, N-(10,11-dihydro-5H-dibenzo(a,d)cyclohepten-5-yl)-26863-99-0C21H18N2O
- N-Benzyl-2-(2-methylphenyl)-1,3-benzoxazol-5-amine355818-12-1C21H18N2O
- ent-Calindol Amide736927-37-0C21H18N2O
- 9-Ethyl-6,11-dihydro-6,6-dimethyl-11-oxo-5H-benzo[b]carbazole-3-carbonitrile1256584-82-3C21H18N2O
- (4S,5R)-4,5-Diphenyl-2-(pyridin-2-ylmethyl)-4,5-dihydrooxazole2757085-35-9C21H18N2O
- (4R,5S)-4,5-Diphenyl-2-(pyridin-2-ylmethyl)-4,5-dihydrooxazole2757085-37-1C21H18N2O
- 4-(1,5-Diphenylpyrazolidin-3-ylidene)cyclohexa-2,5-dien-1-one2515-57-3C21H18N2O
- 1-[(4-Methylbenzyl)oxy]-2-phenyl-1H-1,3-benzimidazole338791-36-9C21H18N2O
- 1-(Benzyloxy)-2-(4-methylphenyl)-1H-1,3-benzimidazole338791-35-8C21H18N2O
- 2-(1,3-Diphenyl-2-pyrazolin-5-yl)phenol42966-99-4C21H18N2O
- N-[(E)-Anthracen-9-ylmethylideneamino]-3-methylidenecyclobutane-1-carboxamide356792-55-7C21H18N2O
- 1H-Indole, 5-(phenylmethoxy)-1-(4-pyridinylmethyl)-141101-93-1C21H18N2O
- N-[2-(2,3-Dihydro-1H-indol-1-yl)phenyl]benzamide71971-54-5C21H18N2O
- 1-(Diphenylmethyl)-4-phenyl-1,2-diazetidin-3-one21083-13-6C21H18N2O
- N-[(1S)-1-Naphthalen-1-ylethyl]-1H-indole-2-carboxamide1217835-51-2C21H18N2O
- Calindol amide-13C1217782-43-8C21H18N2O
- 6-Methoxy-5,5-dimethyl-6H-benzo[c]acridine-7-carbonitrile72005-32-4C21H18N2O
- 5-(5-Amino-2-methylphenyl)-2-phenyl-2,3-dihydro-1H-isoindol-1-one918331-96-1C21H18N2O
- ent-Calindol Amide-13C1217724-96-3C21H18N2O
- (1-(5-Methyl-1H-pyrrol-2-yl)isoquinolin-2(1H)-yl)(phenyl)methanone52809-61-7C21H18N2O
- 3(5H)-Phenanthridinone, 8-amino-5-ethyl-6-phenyl-77431-76-6C21H18N2O
- N,2,3-Triphenylaziridine-1-carboximidic acid1605-05-6C21H18N2O
- N-[(2-Methyl-1H-indol-5-yl)methyl]naphthalene-1-carboxamide852136-58-4C21H18N2O
- 5,6-Diphenyl-2-(5-hydroxy-1-pentyn-1-yl)pyrazine475086-92-1C21H18N2O
- Benzo(g)quinolin-4-amine, N-(4-ethoxyphenyl)-22773-18-8C21H18N2O
- 3H-Indol-2-amine, 3-phenyl-3-(phenylmethyl)-, 1-oxide61352-05-4C21H18N2O
- 2-Methyl-1-[(3-phenoxyphenyl)methyl]-1H-benzimidazole91917-95-2C21H18N2O
- N-9H-Carbazol-3-yl-3,4-dimethylbenzamide1170816-64-4C21H18N2O
- (6-(Indolin-1-yl)-5-methylpyridin-3-yl)(phenyl)methanone1355236-94-0C21H18N2O
- (6-(Indolin-1-yl)-4-methylpyridin-3-yl)(phenyl)methanone1355237-52-3C21H18N2O
- (6-(Indolin-1-yl)-2-methylpyridin-3-yl)(phenyl)methanone1355177-41-1C21H18N2O
- 2-(4'-Methoxy[1,1'-biphenyl]-4-yl)-6-methyl-1H-benzimidazole1393649-62-1C21H18N2O
- 3-Amino-1,4,4-triphenyl-2-azetidinone72899-76-4C21H18N2O
- 5H-Pyrrolo[3,2-b]pyridin-5-one,1,4-dihydro-1-[(4-methylphenyl)methyl]-4-phenyl-677303-28-5C21H18N2O
- 5H-Pyrrolo[3,2-b]pyridin-5-one,1,4-dihydro-1-[(3-methylphenyl)methyl]-4-phenyl-677303-26-3C21H18N2O
- 5H-Pyrrolo[3,2-b]pyridin-5-one,1,4-dihydro-1-[(2-methylphenyl)methyl]-4-phenyl-677303-24-1C21H18N2O
- 5H-Pyrrolo[3,2-b]pyridin-5-one,1,4-dihydro-4-phenyl-1-(1-phenylethyl)-677303-45-6C21H18N2O
- 2,3,5-Triphenylimidazolidin-4-one50530-26-2C21H18N2O
- 4-[2-([1,1'-Biphenyl]-4-yl)-2-oxoethyl]benzene-1-carboximidamide61883-18-9C21H18N2O
- 6-(3,4-Dimethylphenyl)-2-methoxy-4-phenylpyridine-3-carbonitrile89572-46-3C21H18N2O
- 5,6,11-Trimethyl-9-[(prop-2-yn-1-yl)oxy]-6H-pyrido[4,3-b]carbazole142010-31-9C21H18N2O
- N-(4-Methoxyphenyl)-2-phenyl-1H-indol-3-amine19177-36-7C21H18N2O
- (E)-1-{4-[(4-Ethenylphenyl)methoxy]phenyl}-2-phenyldiazene460090-37-3C21H18N2O
- 3-Anilino-N,3-diphenylprop-2-enamide52561-86-1C21H18N2O
- 1-Methyl-2,3-diphenyl-1,2-dihydroquinoxalin-2-ol62607-58-3C21H18N2O
- 4-[2-([1,1'-Biphenyl]-2-yl)-2-oxoethyl]benzene-1-carboximidamide62175-33-1C21H18N2O
- 3-(4-Phenoxyphenyl)-1-phenyl-4,5-dihydro-1H-pyrazole61479-83-2C21H18N2O
- N,N-Dimethyl-9-phenoxyacridin-4-amine61078-28-2C21H18N2O
- N,N-Dimethyl-9-phenoxyacridin-3-amine61078-27-1C21H18N2O
- N,N-Dimethyl-9-phenoxyacridin-2-amine61078-26-0C21H18N2O
- 4-(4-Phenyl-2,3-dihydro-1H-1,5-benzodiazepin-2-yl)phenol917804-97-8C21H18N2O
- (6-(3,4-Dihydroquinolin-1(2H)-yl)pyridin-3-yl)(phenyl)methanone1355238-81-1C21H18N2O
- 6-(Anilinomethylidene)-4-methyl-2-[(E)-(phenylimino)methyl]cyclohexa-2,4-dien-1-one209905-69-1C21H18N2O
- 4-(4,5-Diphenylpyrazolidin-3-ylidene)cyclohexa-2,5-dien-1-one61078-37-3C21H18N2O
- (R)-2-(6-Benzylpyridin-2-yl)-4-phenyl-4,5-dihydrooxazole2227390-60-3C21H18N2O
- 1,5-Dibenzyl-1H-indazol-3-ol1996626-48-2C21H18N2O
- 1H-Pyrrolo[2,3-c]pyridine,7-methoxy-3-phenyl-1-(phenylmethyl)-160590-05-6C21H18N2O
Frequently asked questions
What is the molar mass of C21H18N2O?
The molar mass of C21H18N2O is 314.39 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 315.1453 Da.
How many compounds have the formula C21H18N2O?
CompoundList lists 102 compounds with the molecular formula C21H18N2O, including 3-(4-Dimethylaminonaphthalen-1-ylmethylene)-1,3-dihydroindol-2-one, 1-Benzyl-2-(4-methoxyphenyl)benzimidazole, 3-Benzyl-2-phenyl-1,2-dihydroquinazolin-4-one. 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 C21H18N2O?
C21H18N2O 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.