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 201 to 300 of 587 compounds
1-Amino-2-(diethylamino)-4-hydroxyanthracene-9,10-dione
CAS 296243-83-9C18H18N2O3
![N-(4-Methyl-5-oxo-5H-chromeno[4,3-b]pyridin-2-yl)pivalamide chemical structure, C18H18N2O3, CAS 851411-63-7](/s/JXNHGSIWMRBIJN-UHFFFAOYSA-N.svg)
N-(4-Methyl-5-oxo-5H-chromeno[4,3-b]pyridin-2-yl)pivalamide
CAS 851411-63-7C18H18N2O3
![1-[3-(2-Hydroxy-3-methoxyphenyl)-5-phenyl-3,4-dihydropyrazol-2-yl]ethanone chemical structure, C18H18N2O3, CAS 876942-71-1](/s/UYPMLPVTWCFTSU-UHFFFAOYSA-N.svg)
1-[3-(2-Hydroxy-3-methoxyphenyl)-5-phenyl-3,4-dihydropyrazol-2-yl]ethanone
CAS 876942-71-1C18H18N2O3
![1-[5-(2-Hydroxyphenyl)-3-(3-methoxyphenyl)-4,5-dihydro-1H-pyrazol-1-yl]ethan-1-one chemical structure, C18H18N2O3, CAS 871318-92-2](/s/AKYXUIYZMIYDGR-UHFFFAOYSA-N.svg)
1-[5-(2-Hydroxyphenyl)-3-(3-methoxyphenyl)-4,5-dihydro-1H-pyrazol-1-yl]ethan-1-one
CAS 871318-92-2C18H18N2O3
(Z)-7-((Dimethylamino)methyl)-6-hydroxy-4-methyl-2-(pyridin-4-ylmethylene)benzofuran-3(2H)-one
CAS 903201-28-5C18H18N2O3
N-(2,6-Dimethylquinolin-4-yl)-5-(methoxymethyl)furan-2-carboxamide
CAS 950230-08-7C18H18N2O3
(Z)-7-((Dimethylamino)methyl)-6-hydroxy-4-methyl-2-(pyridin-3-ylmethylene)benzofuran-3(2H)-one
CAS 903195-61-9C18H18N2O3
Benzyl (1-methyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)carbamate
CAS 233775-31-0C18H18N2O3
5-Ethoxy-2-methyl-N-(pyridin-3-ylmethyl)-1-benzofuran-3-carboxamide
CAS 929513-77-9C18H18N2O3
2,5-Dimethyl-N-(2-(quinolin-8-yloxy)ethyl)furan-3-carboxamide
CAS 1234951-00-8C18H18N2O3
5-(3-BOC-Aminophenyl)-2-cyanophenol
CAS 1261984-64-8C18H18N2O3
![Benzyl N-[2-(2-cyanophenoxy)ethyl]-N-methylcarbamate chemical structure, C18H18N2O3, CAS 1232287-10-3](/s/QRAJWJWQKWFSCD-UHFFFAOYSA-N.svg)
Benzyl N-[2-(2-cyanophenoxy)ethyl]-N-methylcarbamate
CAS 1232287-10-3C18H18N2O3
![Ethyl 1-benzyl-4-hydroxy-2-methyl-1H-benzo[d]imidazole-6-carboxylate chemical structure, C18H18N2O3, CAS 1640981-16-3](/s/QIPFMPBRTJTXQG-UHFFFAOYSA-N.svg)
Ethyl 1-benzyl-4-hydroxy-2-methyl-1H-benzo[d]imidazole-6-carboxylate
CAS 1640981-16-3C18H18N2O3
![N-({[2,3'-Bifuran]-5-yl}methyl)-3-(dimethylamino)benzamide chemical structure, C18H18N2O3, CAS 2097936-96-2](/s/QCDMEIXCZSZTBD-UHFFFAOYSA-N.svg)
N-({[2,3'-Bifuran]-5-yl}methyl)-3-(dimethylamino)benzamide
CAS 2097936-96-2C18H18N2O3
![N-[3-(5-Ethyl-1,3-benzoxazol-2-yl)-4-hydroxyphenyl]propanamide chemical structure, C18H18N2O3, CAS 925130-65-0](/s/KNJUDVCKPLWVGZ-UHFFFAOYSA-N.svg)
N-[3-(5-Ethyl-1,3-benzoxazol-2-yl)-4-hydroxyphenyl]propanamide
CAS 925130-65-0C18H18N2O3
3-(3,4,5-Trimethoxyphenyl)quinolin-7-amine
CAS 2920687-14-3C18H18N2O3
Xanthen-9-one, 3-amino-4-morpholinomethyl-
CAS 43159-99-5C18H18N2O3
5-(3,4-Dimethoxybenzyl)-3-(4-methylphenyl)-1,2,4-oxadiazole
CAS 425412-25-5C18H18N2O3
![N-(Furan-2-ylmethyl)-N-[(8-methyl-2-oxo-1H-quinolin-3-yl)methyl]acetamide chemical structure, C18H18N2O3, CAS 577757-98-3](/s/AKKWNOLYTHNYKZ-UHFFFAOYSA-N.svg)
N-(Furan-2-ylmethyl)-N-[(8-methyl-2-oxo-1H-quinolin-3-yl)methyl]acetamide
CAS 577757-98-3C18H18N2O3
![5-[(3,5-Dimethylphenoxy)methyl]-3-(4-methoxyphenyl)-1,2,4-oxadiazole chemical structure, C18H18N2O3, CAS 421581-73-9](/s/WSTFGAJFCWRBMW-UHFFFAOYSA-N.svg)
5-[(3,5-Dimethylphenoxy)methyl]-3-(4-methoxyphenyl)-1,2,4-oxadiazole
CAS 421581-73-9C18H18N2O3
(E)-3-(2-Nitrophenyl)-N-(4-propan-2-ylphenyl)prop-2-enamide
CAS 524686-65-5C18H18N2O3
(E)-N-(2-Ethyl-6-methylphenyl)-3-(2-nitrophenyl)prop-2-enamide
CAS 524686-60-0C18H18N2O3
3-(3,4-Dimethoxyphenyl)-5-(4-methylbenzyl)-1,2,4-oxadiazole
CAS 694443-73-7C18H18N2O3
![5-[(4-Ethylphenoxy)methyl]-3-(4-methoxyphenyl)-1,2,4-oxadiazole chemical structure, C18H18N2O3, CAS 431980-11-9](/s/GOSITGFIRRZLQC-UHFFFAOYSA-N.svg)
5-[(4-Ethylphenoxy)methyl]-3-(4-methoxyphenyl)-1,2,4-oxadiazole
CAS 431980-11-9C18H18N2O3
- (E)-N-(3-Acetamidophenyl)-3-(4-methoxyphenyl)prop-2-enamide587844-27-7C18H18N2O3
- 5-(4-Ethoxyphenyl)-3-[(4-methoxyphenyl)methyl]-1,2,4-oxadiazole6132-66-7C18H18N2O3
- 1H-Pyrrolo(3,4-b)pyridine-3-carboxylic acid, 2,6-dihydro-4,5-dimethyl-2-oxo-7-phenyl-, ethyl ester57435-79-7C18H18N2O3
- Benzeneacetic acid, 4-(2H-1,4-benzoxazin-3-ylamino)-alpha-methyl-, methyl ester109226-98-4C18H18N2O3
- N-[2-(6,7-Dimethyl-2-oxo-1H-quinolin-3-yl)ethyl]furan-2-carboxamide688353-04-0C18H18N2O3
- 2-{[4-(Dimethylamino)phenyl]methyl}-3-oxoindoline-4-carboxylic acid728024-55-3C18H18N2O3
- Benzimidazol-1-yl-(2,4-diethoxyphenyl)methanone898163-36-5C18H18N2O3
- N-[4-(2-Oxopyrrolidin-1-yl)phenyl]-2-phenoxyacetamide922885-24-3C18H18N2O3
- 3-Methoxy-N-[3-(2-oxopyrrolidin-1-yl)phenyl]benzamide941993-32-4C18H18N2O3
- Phenyl N-[4-methyl-3-(2-oxopyrrolidin-1-yl)phenyl]carbamate941957-37-5C18H18N2O3
- 3-[2-(3,4-Dimethoxyphenyl)ethyl]quinazolin-4-one62787-40-0C18H18N2O3
- 2-(2-Oxo-3,4-dihydro-2H-1,4-benzoxazin-3-yl)-N-(2-phenylethyl)acetamide1025032-28-3C18H18N2O3
- N-(2,3-Dihydro-1H-indol-1-ylcarbonyl)-L-phenylalanine1014412-84-0C18H18N2O3
- 1-(3-Methoxybenzoyl)-N-methylindoline-2-carboxamide1100757-61-6C18H18N2O3
- N-(1-Methyl-2-oxoindolin-5-yl)-2-(m-tolyloxy)acetamide921838-28-0C18H18N2O3
- N-{9-Ethyl-10-oxo-2-oxa-9-azatricyclo[9.4.0.0^{3,8}]pentadeca-1(11),3(8),4,6,12,14-hexaen-13-yl}propanamide922082-14-2C18H18N2O3
- {6-[2-(5-Methyl-2-phenyl-1,3-oxazol-4-yl)ethoxy]pyridin-3-yl}methanol331746-72-6C18H18N2O3
- 4-Ethoxy-N-(1-methyl-2-oxo-2,3-dihydro-1H-indol-5-yl)benzamide921813-71-0C18H18N2O3
- {4-[(3,4-Dihydroquinolin-1(2H)-ylcarbonyl)amino]phenyl}acetic acid1170601-59-8C18H18N2O3
- 2-Cyano-3-(4-hydroxy-3-methoxyphenyl)-N-(4-methylphenyl)propanamide1260628-25-8C18H18N2O3
- 1-Ethyl-2-(pyrrolidin-1-ylcarbonyl)chromeno[4,3-b]pyrrol-4(1H)-one1185009-30-6C18H18N2O3
- 6-[4-(Piperidinocarbonyl)phenyl]picolinic acid1261922-93-3C18H18N2O3
- N'-[(1E)-1-(3,4-Dihydroxyphenyl)ethylidene]-2-phenylcyclopropanecarbohydrazide669747-39-1C18H18N2O3
- 4-(4-Methoxyphenyl)-1-(3-methylpyridin-2-yl)piperidine-2,6-dione76734-02-6C18H18N2O3
- 3-(4-Butoxyphenyl)-1H-quinazoline-2,4-dione54209-48-2C18H18N2O3
- 6-Oxo-2,3-diphenyl-1-piperazineacetic acid16635-98-6C18H18N2O3
- 5-Benzyloxy-d-tryptophan178153-07-6C18H18N2O3
- (E)-N-Ethyl-N-(2-methylphenyl)-3-(4-nitrophenyl)prop-2-enamide587844-57-3C18H18N2O3
- N-[2-(4-Methoxyphenyl)-1,3-benzoxazol-5-yl]butanamide420830-05-3C18H18N2O3
- N-(tert-Butyl)-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxamide338417-62-2C18H18N2O3
- Ethyl [(9-ethyl-9H-carbazol-3-yl)amino](oxo)acetate322724-17-4C18H18N2O3
- N-(2-Acetamidophenyl)-4-prop-2-enoxybenzamide842116-90-9C18H18N2O3
- 2-(5-Oxo-4,4-diphenylimidazolidin-1-yl)propanoic acid130908-38-2C18H18N2O3
- 4-[(9-Ethyl-9H-carbazol-3-yl)amino]-4-oxobutanoic acid477308-70-6C18H18N2O3
- Butanoic acid, 4-[(4-acetylphenyl)azo]phenyl ester67647-48-7C18H18N2O3
- N-(1-(Furan-2-carbonyl)-1,2,3,4-tetrahydroquinolin-7-yl)cyclopropanecarboxamide946265-40-3C18H18N2O3
- Phenyl (1-acetyl-1,2,3,4-tetrahydroquinolin-6-yl)carbamate941960-37-8C18H18N2O3
- 3-Methoxy-N-(4-(2-oxopyrrolidin-1-yl)phenyl)benzamide941888-97-7C18H18N2O3
- Phenyl (3-(2-oxopiperidin-1-yl)phenyl)carbamate942014-06-4C18H18N2O3
- 9,10-Anthracenedione, 1-[[2-[(2-hydroxyethyl)amino]ethyl]amino]-105580-93-6C18H18N2O3
- N-(1-(3-Methoxyphenyl)-5-oxopyrrolidin-3-yl)benzamide905680-96-8C18H18N2O3
- N-(2-Cyanophenyl)-4-(2-ethoxyethoxy)benzamide902384-98-9C18H18N2O3
- N-(2-Cyanophenyl)-2-(2-ethoxyethoxy)benzamide903449-58-1C18H18N2O3
- N-(10-Methyl-11-oxo-10,11-dihydrodibenzo[b,f][1,4]oxazepin-2-yl)isobutyramide921889-85-2C18H18N2O3
- 1-(2-Ethoxybenzoyl)indoline-2-carboxamide1101627-80-8C18H18N2O3
- 1-(4-Ethoxybenzoyl)indoline-2-carboxamide1103513-86-5C18H18N2O3
- 1-(4-Methoxybenzoyl)-N-methylindoline-2-carboxamide1101191-28-9C18H18N2O3
- Isopropyl 5-benzyloxy-1H-indazole-3-carboxylate194490-26-1C18H18N2O3
- N-(10-Methyl-11-oxo-10,11-dihydrodibenzo[b,f][1,4]oxazepin-2-yl)butanamide922131-61-1C18H18N2O3
- N-{6-Methyl-10-oxo-2-oxa-9-azatricyclo[9.4.0.0^{3,8}]pentadeca-1(11),3(8),4,6,12,14-hexaen-13-yl}butanamide922109-16-8C18H18N2O3
- 2-Methyl-N-{6-methyl-10-oxo-2-oxa-9-azatricyclo[9.4.0.0^{3,8}]pentadeca-1(11),3(8),4,6,12,14-hexaen-13-yl}propanamide922083-69-0C18H18N2O3
- N-(2,4-Dimethoxyphenyl)-1-methyl-1H-indole-3-carboxamide1090414-09-7C18H18N2O3
- Phenyl (1-ethyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)carbamate922129-65-5C18H18N2O3
- 2-Ethoxy-N-(1-methyl-2-oxo-2,3-dihydro-1H-indol-5-yl)benzamide921773-95-7C18H18N2O3
- N-(2,5-Dimethoxyphenyl)-2-(1H-indol-1-yl)acetamide1144491-15-5C18H18N2O3
- 2-Methyl-N-(4-methyl-5-oxo-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepin-7-yl)benzamide921995-15-5C18H18N2O3
- N-(3,3-Dimethyl-4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-8-yl)benzamide921811-10-1C18H18N2O3
- N-(3,3-Dimethyl-4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-7-yl)benzamide921817-43-8C18H18N2O3
- Phenyl (4-(2-(cyclopropylamino)-2-oxoethyl)phenyl)carbamate1207024-02-9C18H18N2O3
- N-(2-Ethoxyquinolin-8-yl)-2,5-dimethylfuran-3-carboxamide1251706-42-9C18H18N2O3
- 3-Amino-5-(3-pyrrolidinylcarbonylphenyl)benzoic acid1261910-19-3C18H18N2O3
- 2-Propenoic acid, 3-(2,5-dimethoxyphenyl)-, (2E)-2-(phenylmethylene)hydrazide, (2E)-1416814-76-0C18H18N2O3
- 4-Hydroxy-3-(4-hydroxybutyl)-1-phenyl-1,8-naphthyridin-2(1H)-one89108-55-4C18H18N2O3
- 4-(2-Nitro-1,2-diphenylethenyl)morpholine103549-12-8C18H18N2O3
- 1-Methyl-1H-benzo[d]imidazol-5-yl 3-(4-methoxyphenyl)propanoate1396748-50-7C18H18N2O3
- 1-(4-(2-Methoxyphenoxy)but-2-yn-1-yl)-3-phenylurea1428357-53-2C18H18N2O3
- 3-(Anilinomethyl)-6,7-dimethoxyquinolin-2(1H)-one1557296-84-0C18H18N2O3
- Fmoc-D-Ala-NH2333743-51-4C18H18N2O3
- Eslicarbamazepine propionate952740-36-2C18H18N2O3
- 2-Acetyl-3-((4-methoxyphenyl)amino)-N-phenylprop-2-enamide1025564-26-4C18H18N2O3
- 1-[3-(4-Hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-2-(2-methoxy-phenyl)-ethanone1076690-34-0C18H18N2O3
- 2,4(1H,3H)-Pyrimidinedione, 5,6-dihydro-3-benzyl-1-benzyloxy-30060-42-5C18H18N2O3
- N-[3-[3-(3-Cyanophenoxy)propoxy]phenyl]acetamide24549-96-0C18H18N2O3
- 4-(4-Methoxyphenyl)-1-(6-methylpyridin-2-yl)piperidine-2,6-dione76734-01-5C18H18N2O3
- 2-(2-Nitrophenyl)-1,3,4a,5,6,10b-hexahydrobenzo[f][1,3]benzoxazine7598-12-1C18H18N2O3
- 3-Methyl-4-nitro-N-(5,6,7,8-tetrahydronaphthalen-1-yl)benzamide431937-44-9C18H18N2O3
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 1-Amino-2-(diethylamino)-4-hydroxyanthracene-9,10-dione, N-(4-Methyl-5-oxo-5H-chromeno[4,3-b]pyridin-2-yl)pivalamide, 1-[3-(2-Hydroxy-3-methoxyphenyl)-5-phenyl-3,4-dihydropyrazol-2-yl]ethanone. 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.