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 1 to 100 of 587 compounds
Orantinib
CAS 252916-29-3C18H18N2O3
3-(2,4-Dimethyl-5-((2-oxo-1,2-dihydro-3H-indol-3-ylidene)methyl)-1H-pyrrol-3-yl)propanoic acid
CAS 1044712-39-1C18H18N2O3
3',4'-Dihydro-6',7'-dimethoxyspiro(3H-indole-3,1'(2H)-isoquinolin)-2(1H)-one
CAS 35118-14-0C18H18N2O3
![N-[2-Furanyl-(8-hydroxy-7-quinolinyl)methyl]-2-methylpropanamide chemical structure, C18H18N2O3, CAS 332173-89-4](/s/PBZYAPZLINAHET-UHFFFAOYSA-N.svg)
N-[2-Furanyl-(8-hydroxy-7-quinolinyl)methyl]-2-methylpropanamide
CAS 332173-89-4C18H18N2O3
2-Amino-4-(4-hydroxyphenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile
CAS 144036-34-0C18H18N2O3
5-Benzyloxytryptophan
CAS 6383-70-6C18H18N2O3
1-(2,3-Dimethylphenyl)-3-(N-phenylhydroxyamino)pyrrolidine-2,5-dione
CAS 317814-61-2C18H18N2O3
1-Cyclohexyl-2-(furan-3-yl)-1H-benzimidazole-5-carboxylic acid
CAS 390811-95-7C18H18N2O3
![2-(2-Oxo-1-benzo[cd]indolyl)-N-(2-oxolanylmethyl)acetamide chemical structure, C18H18N2O3, CAS 676442-34-5](/s/VVKPUAPJGHWAIV-UHFFFAOYSA-N.svg)
2-(2-Oxo-1-benzo[cd]indolyl)-N-(2-oxolanylmethyl)acetamide
CAS 676442-34-5C18H18N2O3
Vegf receptor 2 kinase inhibitor I
CAS 15966-93-5C18H18N2O3
1H-Isoindole-1,3(2H)-dione, 2-(2-(5-ethyl-1,2-dihydro-6-methyl-2-oxo-3-pyridinyl)ethyl)-
CAS 135525-66-5C18H18N2O3
![4-Methoxy-2-[3-(4-methoxyphenyl)-5-methyl-1H-pyrazol-4-yl]phenol chemical structure, C18H18N2O3, CAS 312308-91-1](/s/AOTWTCLFGRCJOV-UHFFFAOYSA-N.svg)
4-Methoxy-2-[3-(4-methoxyphenyl)-5-methyl-1H-pyrazol-4-yl]phenol
CAS 312308-91-1C18H18N2O3
Methyl 2-(6-methyl-2-oxo-4-phenyl-1,4-dihydroquinazolin-3-yl)acetate
CAS 313502-69-1C18H18N2O3
![2-Amino-5-oxo-4-(pentan-3-yl)-4H,5H-pyrano[3,2-c]chromene-3-carbonitrile chemical structure, C18H18N2O3, CAS 332161-89-4](/s/VJQJDUZQRWXLEL-UHFFFAOYSA-N.svg)
2-Amino-5-oxo-4-(pentan-3-yl)-4H,5H-pyrano[3,2-c]chromene-3-carbonitrile
CAS 332161-89-4C18H18N2O3
2-(4-Phenylpiperazine-1-carbonyl)benzoic acid
CAS 72547-58-1C18H18N2O3
N-(4-Ethylphenyl)-3-(2-oxo-1,3-benzoxazol-3-yl)propanamide
CAS 851989-10-1C18H18N2O3
3-(1,3-Dioxo-1,3,3a,4,7,7a-hexahydro-2H-4,7-methanoisoindol-2-yl)-N-phenylpropanamide
CAS 434313-47-0C18H18N2O3
![N-[3-(Morpholine-4-carbonyl)phenyl]benzamide chemical structure, C18H18N2O3, CAS 500001-33-2](/s/LMFQSPLVHKPKDN-UHFFFAOYSA-N.svg)
N-[3-(Morpholine-4-carbonyl)phenyl]benzamide
CAS 500001-33-2C18H18N2O3
![N-{2-[(3-Phenyl-4,5-dihydro-1,2-oxazol-5-yl)methoxy]phenyl}acetamide chemical structure, C18H18N2O3, CAS 36895-27-9](/s/HGLNYBHEVQZBSP-UHFFFAOYSA-N.svg)
N-{2-[(3-Phenyl-4,5-dihydro-1,2-oxazol-5-yl)methoxy]phenyl}acetamide
CAS 36895-27-9C18H18N2O3
3-(4-Methoxyphenyl)-2-methyl-2,3,5,6-tetrahydro-4H-2,6-methano-1,3,5-benzoxadiazocin-4-one
CAS 688342-98-5C18H18N2O3
1,3-Benzodioxol-5-yl(4-phenylpiperazin-1-yl)methanone
CAS 326907-82-8C18H18N2O3
(E)-N-Benzyl-N-ethyl-3-(2-nitrophenyl)prop-2-enamide
CAS 524686-44-0C18H18N2O3
![2-[2-Oxo-2-(1,2,3,4-tetrahydroisoquinolin-2-yl)ethoxy]benzamide chemical structure, C18H18N2O3, CAS 851723-62-1](/s/PLISDQXOMUITEB-UHFFFAOYSA-N.svg)
2-[2-Oxo-2-(1,2,3,4-tetrahydroisoquinolin-2-yl)ethoxy]benzamide
CAS 851723-62-1C18H18N2O3
5-Methoxy-2-(4-(4-methoxyphenyl)-5-methyl-1H-pyrazol-3-yl)phenol
CAS 385401-32-1C18H18N2O3
- 2-Amino-4-(1-methylbutyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carbonitrile309293-65-0C18H18N2O3
- N-(4-Methylbenzyl)-3-(2-oxo-1,3-benzoxazol-3(2H)-yl)propanamide851988-89-1C18H18N2O3
- N-(2,4-Dimethylphenyl)-3-(2-oxo-1,3-benzoxazol-3(2H)-yl)propanamide851989-34-9C18H18N2O3
- 2-(Benzoylamino)-3-[4-(dimethylamino)phenyl]-acrylic acid3626-95-7C18H18N2O3
- 2-Cyano-3-(1-(4-ethoxyphenyl)-2,5-dimethyl-1H-pyrrol-3-yl)prop-2-enoic acid736949-16-9C18H18N2O3
- N-(2-Pyrrolidin-1-ylphenyl)-1,3-benzodioxole-5-carboxamide701275-95-8C18H18N2O3
- 2-(5-Methyl-3-isoxazolyl)-5-phenylhexahydro-1H-isoindole-1,3(2H)-dione1005069-24-8C18H18N2O3
- [2-Oxo-2-(1,2,3,4-tetrahydronaphthalen-1-ylamino)ethyl] pyridine-3-carboxylate438604-51-4C18H18N2O3
- [3-(3,4-Dimethoxyphenyl)-1-phenyl-1H-pyrazol-4-yl]methanol429620-48-4C18H18N2O3
- N-Isopropyl-2-(2-oxo-benzooxazol-3-yl)-N-phenyl-acetamide609335-00-4C18H18N2O3
- [2-Oxo-2-(prop-2-enylamino)ethyl] 2,3-dihydro-1H-cyclopenta[b]quinoline-9-carboxylate736190-36-6C18H18N2O3
- N-(2-(7,8-Dimethyl-2-oxo-1,2-dihydroquinolin-3-yl)ethyl)furan-2-carboxamide851407-98-2C18H18N2O3
- (4E)-3-Hydroxy-4-[4-(4-propylphenoxy)-1,2-dihydropyrazol-3-ylidene]cyclohexa-2,5-dien-1-one394228-55-8C18H18N2O3
- Ethyl 4-[(2,3-dihydro-1H-indol-1-ylcarbonyl)amino]benzoate708231-74-7C18H18N2O3
- 1,3-Benzodioxol-5-yl-(1-propan-2-ylbenzimidazol-2-yl)methanol328559-13-3C18H18N2O3
- 4-Ethyl-6-[4-(4-methoxyphenyl)-1H-pyrazol-3-yl]benzene-1,3-diol299951-83-0C18H18N2O3
- 5-Methoxy-2-[4-(2-methoxyphenyl)-5-methyl-1H-pyrazol-3-yl]phenol1062224-47-8C18H18N2O3
- Ethyl 3-(4-methylbenzyl)-2-oxo-2,3-dihydro-1H-1,3-benzimidazole-1-carboxylate339013-41-1C18H18N2O3
- 1-(5-Hydroxy-3-methyl-5-phenyl-4H-pyrazol-1-yl)-2-phenoxyethanone331835-09-7C18H18N2O3
- Methyl 1,6-dimethyl-4-(naphthalen-1-yl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate301321-54-0C18H18N2O3
- 1-(4-Methoxyphenyl)-5-oxo-2-phenylpyrrolidine-2-carboxamide383898-47-3C18H18N2O3
- 2-Methyl-N-(4-methylbenzyl)-3-oxo-3,4-dihydro-2H-1,4-benzoxazine-2-carboxamide861211-46-3C18H18N2O3
- N-(2-(5,8-Dimethyl-2-oxo-1,2-dihydroquinolin-3-yl)ethyl)furan-2-carboxamide851406-95-6C18H18N2O3
- Ethyl 3-(3-methylbenzyl)-2-oxo-2,3-dihydro-1H-1,3-benzimidazole-1-carboxylate339013-47-7C18H18N2O3
- 2-(2-Oxo-1,3-benzoxazol-3-yl)-N-(4-propan-2-ylphenyl)acetamide804543-36-0C18H18N2O3
- (3,5-Dimethoxyphenyl)-(2-phenyl-4,5-dihydroimidazol-1-yl)methanone444111-72-2C18H18N2O3
- 2-Methyl-3-nitro-N-(1,2,3,4-tetrahydronaphthalen-1-yl)benzamide569636-23-3C18H18N2O3
- Ethyl 3-(2-methylbenzyl)-2-oxo-2,3-dihydro-1H-1,3-benzimidazole-1-carboxylate339013-45-5C18H18N2O3
- N-[4-[[(E)-3-(3-Methoxyphenyl)-3-oxoprop-1-enyl]amino]phenyl]acetamide1164517-73-0C18H18N2O3
- 3-Methyl-N-morpholin-4-ylbenzo[g][1]benzofuran-2-carboxamide727983-58-6C18H18N2O3
- 2-[2-(2,3-Dihydro-1H-inden-5-ylamino)-2-oxoethoxy]benzamide849120-61-2C18H18N2O3
- N-(1-Cyclopropylethyl)-2-nitro-N-phenylbenzamide297138-80-8C18H18N2O3
- 2-Cyclopentyl-9-methyl-1-oxo-2,9-dihydro-1H-beta-carboline-4-carboxylic acid896633-51-5C18H18N2O3
- N-Cyclopropyl-2-[(3-methoxybenzoyl)amino]benzamide915889-41-7C18H18N2O3
- (E)-1-[4-(Furan-2-carbonyl)piperazin-1-yl]-3-phenylprop-2-en-1-one697770-46-0C18H18N2O3
- 4-[(4,5-Dimethoxy-2-methylphenyl)methoxy]quinazoline851460-41-8C18H18N2O3
- N-(5-Acetyl-1-allyl-6-methyl-2-oxo-1,2-dihydro-3-pyridinyl)benzenecarboxamide338774-97-3C18H18N2O3
- 3-Ethyl-4-(2-phenoxyacetyl)-3,4-dihydro-2(1H)-quinoxalinone1007921-18-7C18H18N2O3
- N-[2-(3-Acetylanilino)-2-oxoethyl]-2-phenylacetamide854033-58-2C18H18N2O3
- 4-Methyl-3-nitro-N-(1,2,3,4-tetrahydronaphthalen-1-yl)benzamide876573-65-8C18H18N2O3
- Methyl 2-{[(2-methyl-2,3-dihydro-1H-indol-1-yl)carbonyl]amino}benzoate701948-07-4C18H18N2O3
- 3-((4-Methoxyphenyl)amino)-1-(m-tolyl)pyrrolidine-2,5-dione1008710-77-7C18H18N2O3
- 3-Methyl-4-nitro-N-(1,2,3,4-tetrahydronaphthalen-1-yl)benzamide852684-65-2C18H18N2O3
- 3-[1-(4-Methoxyphenyl)-2-nitroethyl]-2-methylindolizine716376-41-9C18H18N2O3
- tert-Butyl 4-(2-oxo-2,3-dihydro-1H-1,3-benzodiazol-1-yl)benzoate1698881-96-7C18H18N2O3
- 2-((1-Oxo-1,2,3,4-tetrahydroisoquinolin-5-yl)oxy)-N-(m-tolyl)acetamide886950-10-3C18H18N2O3
- 3-(3,4-Dimethoxyphenyl)-1-(3-phenylprop-2-yn-1-yl)urea2309454-86-0C18H18N2O3
- Methyl alpha-Hydroxy-6-methyl-2-(4-methylphenyl)imidazo[1,2-a]pyridine-3-acetate258273-49-3C18H18N2O3
- N-(2-(Dimethylamino)ethyl)-9-oxo-9H-xanthene-4-carboxamide112022-08-9C18H18N2O3
- N-(4-Nitrophenyl)-1-phenylcyclopentane-1-carboxamide330454-19-8C18H18N2O3
- 2-Oxo-N-(4-phenylbutyl)-3(2H)-benzoxazolecarboxamide1644158-51-9C18H18N2O3
- N'-(4-(Allyloxy)benzylidene)-4-methoxybenzohydrazide303083-01-4C18H18N2O3
- N'-(2-(Allyloxy)benzylidene)-4-methoxybenzohydrazide303083-86-5C18H18N2O3
- 2-((Benzylamino)methyl)-2,3-dihydro-7H-[1,4]dioxino[2,3-e]indol-8(9H)-one189683-28-1C18H18N2O3
- AJ-292/150070436164-58-5C18H18N2O3
- 3-[(4-Methoxyphenyl)methylamino]-1-phenylpyrrolidine-2,5-dione497925-35-6C18H18N2O3
- N-[2-(Morpholine-4-carbonyl)phenyl]benzamide42091-35-0C18H18N2O3
- 2-Amino-4-(3-hydroxyphenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile300701-85-3C18H18N2O3
- N-Benzoyl-N'-(2-phenyl)butanoylurea93596-91-9C18H18N2O3
- 5-[(2,3-Dimethylphenoxy)methyl]-3-(3-methoxyphenyl)-1,2,4-oxadiazole838898-85-4C18H18N2O3
- Aplindore189681-70-7C18H18N2O3
- 5-Ethoxy-3-methyl-N-(4-methylpyridin-2-yl)-1-benzofuran-2-carboxamide1031077-35-6C18H18N2O3
- N-(2-Oxo-1,2,3,4-tetrahydroquinolin-6-yl)-2-(o-tolyloxy)acetamide922054-96-4C18H18N2O3
- 9,10-Anthracenedione, 1-((2-(dimethylamino)ethyl)amino)-4-hydroxy-69895-69-8C18H18N2O3
- N-(4-Methoxyphenyl)-5-oxo-1-phenylpyrrolidine-3-carboxamide333352-76-4C18H18N2O3
- 5-(2-Methoxybenzoyl)-4-methyl-4,5-dihydro-1H-benzo[b][1,4]diazepin-2(3H)-one950415-67-5C18H18N2O3
- 3-(3-Methoxyphenyl)-2-methyl-2,3,5,6-tetrahydro-4H-2,6-methano-1,3,5-benzoxadiazocin-4-one892261-81-3C18H18N2O3
- N-[2-Oxo-1-(2-phenoxyethyl)-2,3-dihydro-1H-indol-3-yl]acetamide1008935-23-6C18H18N2O3
- 2-Cyclohexyl-3-oxo-2,3-dihydro-1H-pyrrolo[3,4-b]quinoline-9-carboxylic acid36796-98-2C18H18N2O3
- RefChem:154904201411-47-4C18H18N2O3
- 2(1H)-Pyridinone, 5-ethyl-6-methyl-3-(((4-oxo-4H-1-benzopyran-3-yl)methyl)amino)-143707-85-1C18H18N2O3
- (E)-N-(Benzo[d][1,3]dioxol-5-ylmethylene)-4-morpholinoaniline321979-23-1C18H18N2O3
- 1-(5-Ethyl-2,4-dihydroxyphenyl)-2-(1-methyl-1H-1,3-benzodiazol-2-yl)ethan-1-one139399-42-1C18H18N2O3
- Ethyl 8-(benzyloxy)-2-methylimidazo[1,2-A]pyridine-3-carboxylate96428-50-1C18H18N2O3
- 4-Ethyl-6-(5-methyl-4-phenoxy-1H-pyrazol-3-yl)-1,3-benzenediol385401-19-4C18H18N2O3
- 7-Amino-4-methoxy-11-methyl-9,10,11,12-tetrahydrochromeno[3,4-c]quinolin-6-one663937-75-5C18H18N2O3
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 Orantinib, 3-(2,4-Dimethyl-5-((2-oxo-1,2-dihydro-3H-indol-3-ylidene)methyl)-1H-pyrrol-3-yl)propanoic acid, 3',4'-Dihydro-6',7'-dimethoxyspiro(3H-indole-3,1'(2H)-isoquinolin)-2(1H)-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 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.