Molecular formula
C18H18N4O3
319 compounds have this formula on CompoundList.
- Molar mass
- 338.37g/mol
- Monoisotopic mass
- 338.1379Da
- Atoms
- 43
- Elements
- 4
- Rings plus double bonds
- 12
The formula C18H18N4O3 describes a molecule made of 18 carbon atoms, 18 hydrogen atoms, 4 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 × 1863.89%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 185.36%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 416.56%14.007 × 4 = 56.028 g/mol
- O Oxygen × 314.18%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C18H18N4O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 200 of 319 compounds
4-(1H-Tetrazol-1-yl)phenyl 3-butoxybenzoate
CAS 912896-27-6C18H18N4O3
4-(1H-Tetrazol-1-yl)phenyl 2-butoxybenzoate
CAS 912905-26-1C18H18N4O3
![N-(2-Methoxyphenethyl)-2-[4-oxo-1,2,3-benzotriazin-3(4H)-yl]acetamide chemical structure, C18H18N4O3, CAS 1144497-15-3](/s/VQHCTHIYGKAVNI-UHFFFAOYSA-N.svg)
N-(2-Methoxyphenethyl)-2-[4-oxo-1,2,3-benzotriazin-3(4H)-yl]acetamide
CAS 1144497-15-3C18H18N4O3
3-(1H-Tetrazol-1-yl)phenyl 4-butoxybenzoate
CAS 912898-48-7C18H18N4O3
![2-[5-(3-Ethyl-1,2,4-oxadiazol-5-yl)-2-oxo-1,2-dihydropyridin-1-yl]-N-(4-methylphenyl)acetamide chemical structure, C18H18N4O3, CAS 1251673-41-2](/s/SPBWHIJHVUTUSI-UHFFFAOYSA-N.svg)
2-[5-(3-Ethyl-1,2,4-oxadiazol-5-yl)-2-oxo-1,2-dihydropyridin-1-yl]-N-(4-methylphenyl)acetamide
CAS 1251673-41-2C18H18N4O3
N-((3-Cyclopentyl-4-oxo-3,4-dihydrophthalazin-1-yl)methyl)isoxazole-5-carboxamide
CAS 1448033-27-9C18H18N4O3
N-(1-(3-(Pyridin-3-yl)-1,2,4-oxadiazol-5-yl)cyclohexyl)furan-2-carboxamide
CAS 1396854-94-6C18H18N4O3
![2-(Benzo[d]isoxazol-3-yl)-1-(4-(pyrazin-2-yloxy)piperidin-1-yl)ethanone chemical structure, C18H18N4O3, CAS 1448126-10-0](/s/AMOMDLLXUDMUSN-UHFFFAOYSA-N.svg)
2-(Benzo[d]isoxazol-3-yl)-1-(4-(pyrazin-2-yloxy)piperidin-1-yl)ethanone
CAS 1448126-10-0C18H18N4O3
2-Ethoxy-N-(2-((3-(pyridin-4-yl)-1,2,4-oxadiazol-5-yl)methyl)phenyl)acetamide
CAS 1797597-96-6C18H18N4O3
3-(3,5-Dimethylisoxazol-4-yl)-N-(2-(6-oxo-1,6-dihydropyridazin-3-yl)phenyl)propanamide
CAS 1448129-74-5C18H18N4O3
![4-(6,7-Dihydro-5H-pyrrolo[3,4-d]pyrimidine-6-carbonyl)-1-(4-methoxyphenyl)pyrrolidin-2-one chemical structure, C18H18N4O3, CAS 1448036-22-3](/s/WVVKAFFSORUEOT-UHFFFAOYSA-N.svg)
4-(6,7-Dihydro-5H-pyrrolo[3,4-d]pyrimidine-6-carbonyl)-1-(4-methoxyphenyl)pyrrolidin-2-one
CAS 1448036-22-3C18H18N4O3
2-Hydroxy-N-(1-(tetrahydro-2H-pyran-4-yl)-1H-pyrazol-4-yl)quinoline-4-carboxamide
CAS 1797638-98-2C18H18N4O3
![2-(Benzo[d]isoxazol-3-yl)-1-(4-(pyridazin-3-yloxy)piperidin-1-yl)ethanone chemical structure, C18H18N4O3, CAS 1797951-40-6](/s/RHCPGXOBUMCKPN-UHFFFAOYSA-N.svg)
2-(Benzo[d]isoxazol-3-yl)-1-(4-(pyridazin-3-yloxy)piperidin-1-yl)ethanone
CAS 1797951-40-6C18H18N4O3
![1-(3-(1H-Pyrrolo[2,3-b]pyridin-1-yl)propyl)-3-(benzo[d][1,3]dioxol-5-yl)urea chemical structure, C18H18N4O3, CAS 1797745-28-8](/s/WEUOWYXVDWDACX-UHFFFAOYSA-N.svg)
1-(3-(1H-Pyrrolo[2,3-b]pyridin-1-yl)propyl)-3-(benzo[d][1,3]dioxol-5-yl)urea
CAS 1797745-28-8C18H18N4O3
![N-(2-Methoxyethyl)-4-((4-oxobenzo[d][1,2,3]triazin-3(4H)-yl)methyl)benzamide chemical structure, C18H18N4O3, CAS 440330-35-8](/s/GYDYELYAMDKGJR-UHFFFAOYSA-N.svg)
N-(2-Methoxyethyl)-4-((4-oxobenzo[d][1,2,3]triazin-3(4H)-yl)methyl)benzamide
CAS 440330-35-8C18H18N4O3
1-(2-Hydroxy-2-phenylethyl)-N-(4-methoxyphenyl)-1H-1,2,4-triazole-3-carboxamide
CAS 2108816-96-0C18H18N4O3
1-(2-Hydroxy-2-phenylethyl)-N-(3-methoxyphenyl)-1H-1,2,4-triazole-3-carboxamide
CAS 2109556-00-3C18H18N4O3
6-Benzyl-3-((3,4-dimethoxyphenyl)amino)-1,2,4-triazin-5(4H)-one
CAS 898651-85-9C18H18N4O3
![4-[3-(2-Methoxyphenyl)-1,2,4-oxadiazol-5-yl]-N-pyridin-3-ylbutanamide chemical structure, C18H18N4O3, CAS 835889-32-2](/s/WIPUMVBNWRMXTO-UHFFFAOYSA-N.svg)
4-[3-(2-Methoxyphenyl)-1,2,4-oxadiazol-5-yl]-N-pyridin-3-ylbutanamide
CAS 835889-32-2C18H18N4O3
Acetamide, N-(((2-(1H-benzimidazol-1-yl)ethyl)amino)carbonyl)-2-phenoxy-
CAS 66473-19-6C18H18N4O3
Benzamide, N-(((2-(1H-benzimidazol-1-yl)ethyl)amino)carbonyl)-p-methoxy-
CAS 66485-88-9C18H18N4O3
Acetamide, N-(4-((5-((4-methylphenyl)amino)-1,3,4-oxadiazol-2-yl)methoxy)phenyl)-
CAS 151392-13-1C18H18N4O3
N'-(3,3-Dimethyl-4H-isoquinolin-1-yl)-2-nitrobenzohydrazide
CAS 302333-68-2C18H18N4O3
![4-(Dimethylamino)-N-[5-(2-methoxyphenyl)-1,3,4-oxadiazol-2-yl]benzamide chemical structure, C18H18N4O3, CAS 865286-12-0](/s/ULNUDZVGVVXDJF-UHFFFAOYSA-N.svg)
4-(Dimethylamino)-N-[5-(2-methoxyphenyl)-1,3,4-oxadiazol-2-yl]benzamide
CAS 865286-12-0C18H18N4O3
- N'-[1-(3,5-Dimethylphenyl)-2,5-dioxopyrrolidin-3-yl]pyridine-4-carbohydrazide956606-96-5C18H18N4O3
- 4-(Dimethylamino)-N-[5-(4-methoxyphenyl)-1,3,4-oxadiazol-2-yl]benzamide865286-76-6C18H18N4O3
- N-(1-Benzyl-1H-1,2,4-triazol-3-yl)-3,5-dimethoxybenzamide828299-07-6C18H18N4O3
- N-(3-Methoxyphenyl)-2-(4-oxo-1,2,3-benzotriazin-3(4H)-yl)butanamide902044-80-8C18H18N4O3
- N-[(E)-{2-[2-(3-Methoxyphenoxy)ethoxy]phenyl}methylidene]-4H-1,2,4-triazol-4-amine301810-15-1C18H18N4O3
- 1-(2-Ethoxyphenyl)-3-[(4-oxo-3H-phthalazin-1-yl)methyl]urea899745-98-3C18H18N4O3
- N,1-bis(3-methoxyphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxamide924840-20-0C18H18N4O3
- N-(2,4-Dimethoxyphenyl)-4-(5-methyl-1H-1,2,3-triazol-1-yl)benzamide924828-79-5C18H18N4O3
- N-(2,5-Dimethoxyphenyl)-4-(5-methyl-1H-1,2,3-triazol-1-yl)benzamide924828-87-5C18H18N4O3
- 3-(2,5-Dimethylbenzyl)-1,7-dimethyloxazolo[2,3-f]purine-2,4(1H,3H)-dione899997-20-7C18H18N4O3
- 1,6,7-Trimethyl-3-(2-methylbenzyl)oxazolo[2,3-f]purine-2,4(1H,3H)-dione899997-48-9C18H18N4O3
- 1,6,7-Trimethyl-3-(4-methylbenzyl)oxazolo[2,3-f]purine-2,4(1H,3H)-dione899751-56-5C18H18N4O3
- 4-(3-(5-Oxo-1-phenylpyrrolidin-3-yl)ureido)benzamide894010-35-6C18H18N4O3
- N1-(3-(2-oxopyrrolidin-1-yl)phenyl)-N2-(pyridin-3-ylmethyl)oxalamide941957-89-7C18H18N4O3
- Ethyl 5-(5-methoxy-2-pyridyl)-1-(6-methyl-3-pyridyl)-1H-pyrazole-3-carboxylate858599-77-6C18H18N4O3
- N-[(4-Methoxyphenyl)methyl]-3-(4-oxo-3,4-dihydro-1,2,3-benzotriazin-3-yl)propanamide440331-57-7C18H18N4O3
- 1,2,4-Triazin-3-amine, 5,6-bis(4-methoxyphenyl)-N-methyl-, 1-oxide102429-90-3C18H18N4O3
- N-[2-Methyl-1-([1,2,4]triazolo[4,3-a]pyridin-3-yl)propyl]-1,3-benzodioxole-5-carboxamide1040695-33-7C18H18N4O3
- 4-Amino-6-(2,5-dimethoxyphenyl)-2-[(pyridin-4-yl)methyl]-2,3-dihydropyridazin-3-one1203287-02-8C18H18N4O3
- 2-[5-(3-Ethyl-1,2,4-oxadiazol-5-yl)-2-oxopyridin-1(2H)-yl]-N-(2-methylphenyl)acetamide1251607-39-2C18H18N4O3
- 2-[5-(3-Ethyl-1,2,4-oxadiazol-5-yl)-2-oxo-1,2-dihydropyridin-1-yl]-N-(3-methylphenyl)acetamide1251583-30-8C18H18N4O3
- N-(1-((1H-Benzo[d]imidazol-2-yl)amino)-1-oxopropan-2-yl)-4-methoxybenzamide1236256-75-9C18H18N4O3
- 1-(Furan-2-ylmethyl)-N-(2-methyl-1H-benzimidazol-5-yl)-5-oxopyrrolidine-3-carboxamide1232796-83-6C18H18N4O3
- N-[2-([1,2,4]Triazolo[4,3-a]pyridin-3-yl)ethyl]-3,4-dihydro-2H-1,5-benzodioxepine-7-carboxamide1323974-40-8C18H18N4O3
- 3-(3-(Furan-2-yl)-6-oxopyridazin-1(6H)-yl)-2-methyl-N-(3-methylpyridin-2-yl)propanamide1286704-36-6C18H18N4O3
- 4-(2-Aminopyridine-3-carbonyl)-1-(2-phenylethyl)piperazine-2,6-dione1326883-88-8C18H18N4O3
- N-Cyclopropyl-N-(2,5-dioxopyrrolidin-3-yl)-5-methyl-1-phenyl-1H-pyrazole-3-carboxamide1311416-80-4C18H18N4O3
- N-(1,3-Benzodioxol-5-ylmethyl)-4-([1,2,4]triazolo[4,3-a]pyridin-3-yl)butanamide1574336-96-1C18H18N4O3
- 2-(Benzo[d]isoxazol-3-yl)-1-(3-((6-methylpyridazin-3-yl)oxy)pyrrolidin-1-yl)ethanone2034210-31-4C18H18N4O3
- (1H-Indol-2-yl)(3-((6-methoxypyridazin-3-yl)oxy)pyrrolidin-1-yl)methanone2034502-35-5C18H18N4O3
- 3-{[1-(2-Hydroxy-2-phenylacetyl)piperidin-3-yl]oxy}pyrazine-2-carbonitrile2034229-05-3C18H18N4O3
- 5-[2-(3,5-Dimethyl-1,2-oxazol-4-yl)acetyl]-1,5,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),9,11,13-tetraen-2-one2034531-28-5C18H18N4O3
- 1-Methyl-2-oxo-N-(4-oxo-1,2,3,3a,4,5-hexahydropyrrolo[1,2-a]quinoxalin-2-yl)-1,2-dihydropyridine-3-carboxamide2034206-68-1C18H18N4O3
- O'-Hydroxymesocarb1161921-14-7C18H18N4O3
- 3-[4-(Diethylamino)anilino]-5-nitro-2H-indol-2-one5193-77-1C18H18N4O3
- 3-Methyl-6-nitro-7-(3-phenylpropylamino)quinazolin-4-one81946-06-7C18H18N4O3
- 2-(3-Methylanilino)-N-[(E)-[(E)-3-(4-nitrophenyl)prop-2-enylidene]amino]acetamide328576-36-9C18H18N4O3
- N'-(3,3-Dimethyl-4H-isoquinolin-1-yl)-4-nitrobenzohydrazide331001-21-9C18H18N4O3
- N-(Furan-2-ylmethyl)-2-methyl-4-[(3-methylbenzoyl)amino]pyrazole-3-carboxamide1005609-55-1C18H18N4O3
- N-[5,6-Bis(furan-2-yl)furo[2,3-d]pyrimidin-4-yl]-N',N'-dimethylethane-1,2-diamine902325-83-1C18H18N4O3
- 4-Methyl-N-(2-(8-methylimidazo[1,2-a]pyridin-2-yl)ethyl)-3-nitrobenzamide868978-36-3C18H18N4O3
- 3-(1,3-Benzodioxol-5-yl)-N-[2-([1,2,4]triazolo[4,3-a]pyridin-3-yl)ethyl]propanamide883471-37-2C18H18N4O3
- 2-Hydroxymesocarb72460-72-1C18H18N4O3
- N-(2,5-Dimethoxyphenyl)-5-methyl-1-(2-pyridinyl)-1H-pyrazole-4-carboxamide957502-11-3C18H18N4O3
- N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-1,3,6-trimethyl-1H-pyrazolo[3,4-b]pyridine-4-carboxamide919050-84-3C18H18N4O3
- 1-(3-Methoxyphenyl)-N-(4-methoxyphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxamide924840-16-4C18H18N4O3
- 2-[1-(4-Methylbenzyl)-1H-1,2,4-triazol-3-yl]hexahydro-1H-4,7-epoxyisoindole-1,3(2H)-dione1052567-77-7C18H18N4O3
- 2-[1-(2-Methylbenzyl)-1H-1,2,4-triazol-3-yl]hexahydro-1H-4,7-epoxyisoindole-1,3(2H)-dione1052570-22-5C18H18N4O3
- 2-[1-(3-Methylbenzyl)-1H-1,2,4-triazol-3-yl]hexahydro-1H-4,7-epoxyisoindole-1,3(2H)-dione1052572-50-5C18H18N4O3
- 5-Methyl-7-(morpholine-4-carbonyl)-2-phenyl-2H-pyrazolo[4,3-c]pyridin-3(5H)-one921879-71-2C18H18N4O3
- (E)-1-(3-(2-Methoxyethyl)-2-oxo-2,3-dihydroquinazolin-4(1H)-ylidene)-3-phenylurea899973-02-5C18H18N4O3
- 1-(6-Methoxy-3-pyridyl)-5-(6-methyl-3-pyridyl)-1H-pyrazole-3-carboxylic acid ethyl ester858601-58-8C18H18N4O3
- 4-Methoxy-N-[3-oxo-3-(pyridin-2-ylamino)propyl]-1H-indole-2-carboxamide1010924-24-9C18H18N4O3
- 3-(2-Hydroxy-5-oxo-4,5-dihydro-3H-1,4-benzodiazepin-3-yl)-N-(pyridin-4-ylmethyl)propanamide1190839-13-4C18H18N4O3
- N-(4-Carbamoylphenyl)-3-methyl-6-(propan-2-yl)[1,2]oxazolo[5,4-b]pyridine-4-carboxamide1190266-34-2C18H18N4O3
- 1-(5-Benzyl-1,3,4-oxadiazol-2-yl)-3-(2-ethoxyphenyl)urea1203374-80-4C18H18N4O3
- 5-Benzyl-7-(morpholine-4-carbonyl)-2H-pyrazolo[4,3-c]pyridin-3(5H)-one1219845-24-5C18H18N4O3
- 3-(3-(Furan-2-yl)-6-oxopyridazin-1(6H)-yl)-2-methyl-N-(pyridin-3-ylmethyl)propanamide1286732-15-7C18H18N4O3
- 2-Hydroxy-N-(3-methyl-1H-pyrazol-5-yl)-4-oxo-1,6,7,11b-tetrahydro-4H-pyrido[2,1-a]isoquinoline-1-carboxamide1240220-46-5C18H18N4O3
- 4-(6-(Tetrahydro-2H-pyran-4-ylamino)imidazo[1,2-b]pyridazin-3-yl)benzoic acid927432-57-3C18H18N4O3
- Methyl 4-{[4-([1,2,4]triazolo[4,3-a]pyridin-3-yl)butanoyl]amino}benzoate1374538-76-7C18H18N4O3
- 2-(3,4-Dihydro-2H-1,5-benzodioxepin-7-yl)-N-([1,2,4]triazolo[4,3-a]pyridin-3-ylmethyl)acetamide1374513-35-5C18H18N4O3
- tert-Butyl 3-(3-(pyridin-3-yl)-1,2,4-oxadiazol-5-yl)phenylcarbamate1033724-53-6C18H18N4O3
- N-[2-(2-Methyl-4-oxopyrido[2,3-d]pyrimidin-3(4H)-yl)ethyl]-2-phenoxyacetamide1574464-96-2C18H18N4O3
- 2-Methoxy-N-[2-(2-methyl-4-oxopyrido[2,3-d]pyrimidin-3(4H)-yl)ethyl]benzamide1442080-57-0C18H18N4O3
- 3-(3-(Furan-2-yl)-1,2,4-oxadiazol-5-yl)-N-phenethylazetidine-1-carboxamide1428351-11-4C18H18N4O3
- N-(3,4-Dimethylphenyl)-3-[3-(furan-2-yl)-1,2,4-oxadiazol-5-yl]azetidine-1-carboxamide1448035-63-9C18H18N4O3
- N1-(2-hydroxy-2-(1-methyl-1H-indol-3-yl)ethyl)-N2-(pyridin-3-yl)oxalamide1448052-65-0C18H18N4O3
- 2-((1-(1-Methyl-2-oxo-1,2-dihydropyridine-3-carbonyl)piperidin-4-yl)oxy)nicotinonitrile1448061-18-4C18H18N4O3
- 2-((1-(2-Methoxynicotinoyl)piperidin-4-yl)oxy)nicotinonitrile1797224-89-5C18H18N4O3
- 3-(Benzo[d][1,3]dioxol-5-yl)-1-ethyl-1-(imidazo[1,2-a]pyridin-3-ylmethyl)urea1448136-67-1C18H18N4O3
- N-((1-Methyl-1,4,6,7-tetrahydropyrano[4,3-c]pyrazol-3-yl)methyl)-5-phenylisoxazole-3-carboxamide1797823-86-9C18H18N4O3
- 2-(1H-Indol-3-yl)-2-oxo-N-(1-(tetrahydro-2H-pyran-4-yl)-1H-pyrazol-4-yl)acetamide1797721-17-5C18H18N4O3
- N-[2-(4-Hydroxyphenyl)ethyl]-3-(4-oxo-4H-pyrido[2,1-c][1,2,4]triazin-3-yl)propanamide1574527-90-4C18H18N4O3
- N-(1-((2,3-Dihydrobenzo[b][1,4]dioxin-2-yl)methyl)-1H-pyrazol-4-yl)-2-(1H-pyrrol-1-yl)acetamide1795194-38-5C18H18N4O3
- 3-(4-Methoxyphenyl)-N-(3-methyl-4-oxo-3,4-dihydro-1,2,3-benzotriazin-6-yl)propanamide1630873-61-8C18H18N4O3
Frequently asked questions
What is the molar mass of C18H18N4O3?
The molar mass of C18H18N4O3 is 338.37 g/mol, calculated from standard atomic weights for 18 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 338.1379 Da.
How many compounds have the formula C18H18N4O3?
CompoundList lists 319 compounds with the molecular formula C18H18N4O3, including 4-(1H-Tetrazol-1-yl)phenyl 3-butoxybenzoate, 4-(1H-Tetrazol-1-yl)phenyl 2-butoxybenzoate, N-(2-Methoxyphenethyl)-2-[4-oxo-1,2,3-benzotriazin-3(4H)-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 C18H18N4O3?
C18H18N4O3 has a degree of unsaturation of 12. 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.