Molecular formula
C18H18N2O3
587 compounds have this formula on CompoundList.
- Molar mass
- 310.35g/mol
- Monoisotopic mass
- 310.1317Da
- Atoms
- 41
- Elements
- 4
- Rings plus double bonds
- 11
The formula C18H18N2O3 describes a molecule made of 18 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms and 3 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 × 1869.66%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 185.85%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 29.03%14.007 × 2 = 28.014 g/mol
- O Oxygen × 315.47%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C18H18N2O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 200 of 587 compounds
![N-[5-(5-Methoxy-1,3-benzoxazol-2-yl)-2-methylphenyl]propanamide chemical structure, C18H18N2O3, CAS 712284-43-0](/s/HYTGVZIZQSSYAM-UHFFFAOYSA-N.svg)
N-[5-(5-Methoxy-1,3-benzoxazol-2-yl)-2-methylphenyl]propanamide
CAS 712284-43-0C18H18N2O3
3-Methyl-4-(4-phenoxybenzoyl)piperazin-2-one
CAS 1103994-44-0C18H18N2O3
2-(2-Nitrophenyl)-N-(5,6,7,8-tetrahydronaphthalen-1-yl)acetamide
CAS 690986-77-7C18H18N2O3
![2-[(4-Methoxybenzoyl)amino]-N-prop-2-enylbenzamide chemical structure, C18H18N2O3, CAS 693241-48-4](/s/KIGJOHROSTYMMW-UHFFFAOYSA-N.svg)
2-[(4-Methoxybenzoyl)amino]-N-prop-2-enylbenzamide
CAS 693241-48-4C18H18N2O3
10-Methoxy-2-methyl-3-phenyl-2,3,5,6-tetrahydro-4H-2,6-methano-1,3,5-benzoxadiazocin-4-one
CAS 896704-00-0C18H18N2O3
5-(3-Methoxybenzoyl)-4-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepin-2-one
CAS 866156-62-9C18H18N2O3
1-(3-(2-Hydroxyphenyl)-5-(4-methoxyphenyl)-4,5-dihydro-1H-pyrazol-1-yl)ethanone
CAS 87545-11-7C18H18N2O3
Tubulin polymerization-IN-36
CAS 2011784-91-9C18H18N2O3
alpha-Amylase-IN-1
CAS 148404-10-8C18H18N2O3
![5-(4-Methoxybenzoyl)-4-methyl-4,5-dihydro-1H-benzo[b][1,4]diazepin-2(3H)-one chemical structure, C18H18N2O3, CAS 950364-17-7](/s/RXJGLEDZBFQZCS-UHFFFAOYSA-N.svg)
5-(4-Methoxybenzoyl)-4-methyl-4,5-dihydro-1H-benzo[b][1,4]diazepin-2(3H)-one
CAS 950364-17-7C18H18N2O3
N-(2,3-Dimethylphenyl)-3-(2-oxo-1,3-benzoxazol-3-yl)propanamide
CAS 851989-33-8C18H18N2O3
2-(1-Methoxyindol-3-yl)-N-(3-methoxyphenyl)acetamide
CAS 2132412-32-7C18H18N2O3
2-(1-Methoxyindol-3-yl)-N-(4-methoxyphenyl)acetamide
CAS 2132412-33-8C18H18N2O3
![Benzyl N-[3-(2-oxopyrrolidin-1-yl)phenyl]carbamate chemical structure, C18H18N2O3, CAS 923103-80-4](/s/UUUBGEZGTJGGSY-UHFFFAOYSA-N.svg)
Benzyl N-[3-(2-oxopyrrolidin-1-yl)phenyl]carbamate
CAS 923103-80-4C18H18N2O3
N-(2-Cyclopropanecarbonyl-1,2,3,4-tetrahydroisoquinolin-7-yl)furan-2-carboxamide
CAS 955644-21-0C18H18N2O3
7-(2,6-Dimethoxypyridin-3-yl)-1,4-dimethylquinolin-2(1H)-one
CAS 3032601-06-9C18H18N2O3
![2-(Cyclopropylamino)-2-oxoethyl 2,3-dihydro-1H-cyclopenta[b]quinoline-9-carboxylate chemical structure, C18H18N2O3, CAS 6581-95-9](/s/SLJZEAMOKARVEL-UHFFFAOYSA-N.svg)
2-(Cyclopropylamino)-2-oxoethyl 2,3-dihydro-1H-cyclopenta[b]quinoline-9-carboxylate
CAS 6581-95-9C18H18N2O3
![N-[1-(Furan-2-carbonyl)-1,2,3,4-tetrahydroquinolin-6-yl]cyclopropanecarboxamide chemical structure, C18H18N2O3, CAS 942005-67-6](/s/KVJCRYRPLOSPGC-UHFFFAOYSA-N.svg)
N-[1-(Furan-2-carbonyl)-1,2,3,4-tetrahydroquinolin-6-yl]cyclopropanecarboxamide
CAS 942005-67-6C18H18N2O3
10H-Phenoxazine, 10-(4-morpholinylacetyl)-
CAS 101793-61-7C18H18N2O3
Methyl (1-benzoyl-1,2,3,4-tetrahydroquinolin-7-yl)carbamate
CAS 955610-67-0C18H18N2O3
4-Isopropoxy-N-(2-oxoindolin-5-yl)benzamide
CAS 921814-00-8C18H18N2O3
![3,4-Dimethyl-N-(5-oxo-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepin-7-yl)benzamide chemical structure, C18H18N2O3, CAS 922130-17-4](/s/LJSOAEUFOVKBAL-UHFFFAOYSA-N.svg)
3,4-Dimethyl-N-(5-oxo-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepin-7-yl)benzamide
CAS 922130-17-4C18H18N2O3
![1-[5-(4-Hydroxy-3-methoxyphenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl]ethan-1-one chemical structure, C18H18N2O3, CAS 1290604-83-9](/s/LBHCBNVUCHSTNV-UHFFFAOYSA-N.svg)
1-[5-(4-Hydroxy-3-methoxyphenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl]ethan-1-one
CAS 1290604-83-9C18H18N2O3
L-Tryptophan, 5-(phenylmethoxy)-
CAS 113626-30-5C18H18N2O3
- 3-(2-Aminoethyl)-5-(benzyloxy)-1H-indole-2-carboxylic acid54987-14-3C18H18N2O3
- 2-(Ethoxymethylidene)-N,N'-diphenylpropanediamide324580-80-5C18H18N2O3
- 1-(2-(m-Tolyloxy)acetyl)indoline-2-carboxamide1099656-27-5C18H18N2O3
- 1-[3-(4-Hydroxy-3-methoxyphenyl)-5-phenyl-4,5-dihydro-1H-pyrazol-1-yl]ethan-1-one1797792-69-8C18H18N2O3
- 1-((3-Hydroxypropyl)amino)-4-(methylamino)anthraquinone56504-94-0C18H18N2O3
- RefChem:38159756106-97-9C18H18N2O3
- 7-Benzyloxy-DL-tryptophan66866-40-8C18H18N2O3
- 9-(Benzyloxy)-3-(2-hydroxyethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one1008796-22-2C18H18N2O3
- 3-(2-Oxo-1,3-benzoxazol-3(2H)-yl)-N-(2-phenylethyl)propanamide851988-94-8C18H18N2O3
- 3-(2-Oxo-1,3-benzoxazol-3(2H)-yl)-N-(1-phenylethyl)propanamide851988-90-4C18H18N2O3
- 3-[2,4-Dimethyl-5-[(E)-(2-oxo-1H-indol-3-ylidene)methyl]-1H-pyrrol-3-yl]propanoic acid245036-27-5C18H18N2O3
- 2-(2-Methyl-2,3-dihydro-1H-indol-1-yl)-2-oxoethyl 4-aminobenzoate931239-24-6C18H18N2O3
- 1 suppliers4-((6,7-Dimethoxyquinolin-4-yl)oxy)-2-methylaniline228559-82-8C18H18N2O3
- 7-Methoxy-3-{[(4-methoxyphenyl)amino]methyl}quinolin-2(1H)-one335222-91-8C18H18N2O3
- 3-[2-(3-Aminophenyl)-2-oxoethyl]-1-ethyl-3-hydroxy-1,3-dihydro-2H-indol-2-one370846-37-0C18H18N2O3
- Oxcarbazepine O-Propan-1-one186694-22-4C18H18N2O3
- N-Ethyl-3-(2-oxobenzo[d]oxazol-3(2H)-yl)-N-phenylpropanamide851989-02-1C18H18N2O3
- 5-Ethoxy-2-[4-(2-methoxyphenyl)-1H-pyrazol-3-yl]phenol1009770-57-3C18H18N2O3
- 3-Morpholin-4-yl-1-naphthalen-1-ylpyrrolidine-2,5-dione293766-02-6C18H18N2O3
- 1-(2-Methoxyphenyl)-3-(4-toluidino)-2,5-pyrrolidinedione342615-88-7C18H18N2O3
- 5-(3-Methoxybenzoyl)-3-methyl-2,3,4,5-tetrahydro-1H-1,5-benzodiazepin-2-one1031649-93-0C18H18N2O3
- 1-Acetyllysergic acid98843-11-9C18H18N2O3
- (4-Hydroxy-5,5-dimethyl-3-oxido-4-phenyl-4,5-dihydro-1H-imidazol-2-yl)(phenyl)methanone107945-96-0C18H18N2O3
- dl-6-Benzyloxytryptophan67607-63-0C18H18N2O3
- Cinnamamide, N-(2-hydroxyethyl)-, phenylcarbamate30687-10-6C18H18N2O3
- N-(2,5-Dimethylphenyl)-3-(2-oxo-1,3-benzoxazol-3(2H)-yl)propanamide827001-36-5C18H18N2O3
- 3-[1-(4-Methoxyphenyl)-2-nitroethyl]-2-methyl-1H-indole33723-35-2C18H18N2O3
- N-[4-(Dimethylamino)phenyl]-1-oxo-3,4-dihydro-1H-isochromene-3-carboxamide627044-23-9C18H18N2O3
- Benzyl (2-(5-hydroxy-1H-indol-3-yl)ethyl)carbamate53157-50-9C18H18N2O3
- (3'-Nitro-[1,1'-biphenyl]-4-yl)(piperidin-1-yl)methanone1355248-23-5C18H18N2O3
- 4-Hydroxy-3-(3-hydroxybutyl)-1-phenyl-1,8-naphthyridin-2(1H)-one89108-62-3C18H18N2O3
- (E)-Ethyl 3-(phenylamino)-2-(phenylcarbamoyl)acrylate75544-71-7C18H18N2O3
- 1-Benzyl-3-(4-methoxyanilino)pyrrolidine-2,5-dione106058-35-9C18H18N2O3
- 3-{2-[4-(Dimethylamino)phenyl]-2-oxoethyl}-3-hydroxy-1,3-dihydro-2H-indol-2-one362506-54-5C18H18N2O3
- N-(2-Ethylphenyl)-3-(2-oxo-1,3-benzoxazol-3-yl)propanamide851989-09-8C18H18N2O3
- 2-(Acetylamino)-N-(3-methoxyphenyl)-3-phenylacrylamide5375-42-8C18H18N2O3
- (E)-3-(3-(Furan-2-yl)acryloyl)-3,4,5,6-tetrahydro-1H-1,5-methanopyrido[1,2-a][1,5]diazocin-8(2H)-one895903-73-8C18H18N2O3
- N-(4-Acetamidophenyl)chroman-3-carboxamide919033-78-6C18H18N2O3
- 4-Ethyl-5-methoxy-2-(4-phenoxy-1H-pyrazol-3-yl)phenol394228-50-3C18H18N2O3
- N-Benzyl-2-(6-methyl-3-oxo-2,3-dihydro-4H-1,4-benzoxazin-4-yl)acetamide606119-51-1C18H18N2O3
- N-(3-Nitrophenyl)-1-phenylcyclopentane-1-carboxamide328964-80-3C18H18N2O3
- 2-(2-Morpholinoethyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione202745-97-9C18H18N2O3
- N-(2-Methoxyphenyl)-5-oxo-1-phenylpyrrolidine-3-carboxamide302559-98-4C18H18N2O3
- 1-Acetyl-4-(3-benzimidazolyl-2-hydroxypropoxy)benzene439141-11-4C18H18N2O3
- 3-Hydroxy-3-[2-oxo-2-(pyridin-4-yl)ethyl]-1-(propan-2-yl)-1,3-dihydro-2H-indol-2-one688038-38-2C18H18N2O3
- 2-(4-(Dimethylamino)benzyl)-3-oxoisoindoline-4-carboxylic acid881041-36-7C18H18N2O3
- 3-(3,4-Dimethoxyphenyl)-1-(3-methylphenyl)pyrazol-5-ol925023-50-3C18H18N2O3
- N-[4-[[(E)-3-(4-Methoxyphenyl)-3-oxoprop-1-enyl]amino]phenyl]acetamide377062-18-5C18H18N2O3
- 8-[4-(Dimethylamino)phenyl]-7,8-dihydro[1,3]dioxolo[4,5-g]quinolin-6(5H)-one725687-27-4C18H18N2O3
- N,2,5-trimethyl-N-[(2-oxo-1H-quinolin-4-yl)methyl]furan-3-carboxamide902327-09-7C18H18N2O3
- 2-Butenoic acid, 4-[2-(4-ethoxyphenyl)diazenyl]phenyl ester49759-21-9C18H18N2O3
- 4-[(6,7-Dimethoxy-4-quinolyl)oxy]-3-methyl-aniline347161-76-6C18H18N2O3
- N-(1,3-Benzodioxol-5-ylmethyl)-N-[(5-methoxy-1H-indol-3-yl)methyl]amine1114597-64-6C18H18N2O3
- 1-((1,3-Dioxolan-2-yl)methyl)-2-(phenoxymethyl)-1H-benzo[d]imidazole1147228-76-9C18H18N2O3
- 1 suppliers3-Benzyl-6-((4-hydroxyphenyl)methyl)piperazine-2,5-dione5147-17-1C18H18N2O3
- 4-[(3-Benzyl-2-oxoimidazolidin-1-yl)methyl]benzoic acid1242871-80-2C18H18N2O3
- 1-(4-Hydroxyphenyl)-2-phenyl-4-(propan-2-yl)pyrazolidine-3,5-dione14845-08-0C18H18N2O3
- Butyl 4-(3-hydroxy-1H-indazol-1-yl)benzoate20943-48-0C18H18N2O3
- 5-[(2,5-Dimethylphenoxy)methyl]-3-(4-methoxyphenyl)-1,2,4-oxadiazole431925-92-7C18H18N2O3
- N-(3,5-Dimethylphenyl)-3-(2-oxo-1,3-benzoxazol-3-yl)propanamide851989-35-0C18H18N2O3
- N-[(E)-3-(2-Hydroxyethylamino)-3-oxo-1-phenylprop-1-en-2-yl]benzamide41360-79-6C18H18N2O3
- 1-(5-(3-Hydroxy-4-methoxyphenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)ethan-1-one927140-85-0C18H18N2O3
- N-{1-[(4-Methoxyphenyl)methyl]-2-oxoindolin-3-yl}acetamide1009054-44-7C18H18N2O3
- N-[1-(2-Methoxybenzyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]acetamide1008653-78-8C18H18N2O3
- 3-(3,4-Dimethoxyphenyl)-1-(2-methylphenyl)-1H-pyrazol-5-ol925154-33-2C18H18N2O3
- 1-{[4-(4-Nitrophenyl)phenyl]carbonyl}piperidine1355246-86-4C18H18N2O3
- 2-Hydroxy-3-[4-(3-oxo-1H-isoindol-2-yl)phenyl]butanamide84244-54-2C18H18N2O3
- 5-[(2,4-Dimethylphenoxy)methyl]-3-(4-methoxyphenyl)-1,2,4-oxadiazole381199-85-5C18H18N2O3
- N-(Furan-2-ylmethyl)-N-[(7-methyl-2-oxo-1H-quinolin-3-yl)methyl]acetamide579447-40-8C18H18N2O3
- N-(tert-Butyl)-7-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxamide338751-41-0C18H18N2O3
- N-(2-Ethyl-6-methylphenyl)-2-(2-oxo-1,3-benzoxazol-3-yl)acetamide802969-42-2C18H18N2O3
- N-(2-Nitrophenyl)-1-phenylcyclopentane-1-carboxamide337497-32-2C18H18N2O3
- 3-Hydroxy-3-[2-oxo-2-(pyridin-3-yl)ethyl]-1-(propan-2-yl)-1,3-dihydro-2H-indol-2-one688038-37-1C18H18N2O3
- N-(4-Acetylphenyl)-4-(propanoylamino)benzamide827621-10-3C18H18N2O3
- Benzamide, 3,4-methylenedioxy-N-(1,2,3,4-tetrahydro-2-methylisoquinolin-5-yl)-41957-39-5C18H18N2O3
- 2-Cyano-3-(4-hydroxy-3-methoxyphenyl)-N-(3-methylphenyl)propanamide731833-16-2C18H18N2O3
Frequently asked questions
What is the molar mass of C18H18N2O3?
The molar mass of C18H18N2O3 is 310.35 g/mol, calculated from standard atomic weights for 18 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 310.1317 Da.
How many compounds have the formula C18H18N2O3?
CompoundList lists 587 compounds with the molecular formula C18H18N2O3, including N-[5-(5-Methoxy-1,3-benzoxazol-2-yl)-2-methylphenyl]propanamide, 3-Methyl-4-(4-phenoxybenzoyl)piperazin-2-one, 2-(2-Nitrophenyl)-N-(5,6,7,8-tetrahydronaphthalen-1-yl)acetamide. 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 C18H18N2O3?
C18H18N2O3 has a degree of unsaturation of 11. 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.