Molecular formula
C18H20N4O3
324 compounds have this formula on CompoundList.
- Molar mass
- 340.38g/mol
- Monoisotopic mass
- 340.1535Da
- Atoms
- 45
- Elements
- 4
- Rings plus double bonds
- 11
The formula C18H20N4O3 describes a molecule made of 18 carbon atoms, 20 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 × 1863.52%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 205.92%1.008 × 20 = 20.160 g/mol
- N Nitrogen × 416.46%14.007 × 4 = 56.028 g/mol
- O Oxygen × 314.10%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C18H20N4O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 324 compounds
![Ethyl 2-imino-10-methyl-5-oxo-1-propyl-1,5-dihydro-2H-dipyrido[1,2-A:2,3-D]pyrimidine-3-carboxylate chemical structure, C18H20N4O3, CAS 500147-68-2](/s/UCGIHIJBLPQGTO-UHFFFAOYSA-N.svg)
Ethyl 2-imino-10-methyl-5-oxo-1-propyl-1,5-dihydro-2H-dipyrido[1,2-A:2,3-D]pyrimidine-3-carboxylate
CAS 500147-68-2C18H20N4O3
![Benzyl 2-(1-tert-butyl-4-oxopyrazolo[3,4-d]pyrimidin-5-yl)acetate chemical structure, C18H20N4O3, CAS 903164-60-3](/s/ZQHKKDHDLOTJJZ-UHFFFAOYSA-N.svg)
Benzyl 2-(1-tert-butyl-4-oxopyrazolo[3,4-d]pyrimidin-5-yl)acetate
CAS 903164-60-3C18H20N4O3
![N-[1-Methyl-2-[2-(propanoylamino)ethyl]benzimidazol-5-yl]furan-2-carboxamide chemical structure, C18H20N4O3, CAS 876711-14-7](/s/ICKFEBHOAFJBKD-UHFFFAOYSA-N.svg)
N-[1-Methyl-2-[2-(propanoylamino)ethyl]benzimidazol-5-yl]furan-2-carboxamide
CAS 876711-14-7C18H20N4O3
Aurantiomide C
CAS 915190-86-2C18H20N4O3
Ethyl 2-(1,3-benzoxazol-2-ylamino)-4-methyl-6-propylpyrimidine-5-carboxylate
CAS 669718-57-4C18H20N4O3
![6-Amino-4-(3,5-dimethoxyphenyl)-3-propyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile chemical structure, C18H20N4O3, CAS 371209-33-5](/s/RMBDFVAOIGVTPD-UHFFFAOYSA-N.svg)
6-Amino-4-(3,5-dimethoxyphenyl)-3-propyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile
CAS 371209-33-5C18H20N4O3
![N-Cyclopropyl-5-(4-methoxybenzyl)-4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxamide chemical structure, C18H20N4O3, CAS 477859-34-0](/s/JQRQXQMBHSHZFP-UHFFFAOYSA-N.svg)
N-Cyclopropyl-5-(4-methoxybenzyl)-4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxamide
CAS 477859-34-0C18H20N4O3
![2-[4-(Furan-2-ylcarbonyl)piperazin-1-yl]-4-methyl-7,8-dihydroquinazolin-5(6H)-one chemical structure, C18H20N4O3, CAS 879625-78-2](/s/QQPIXVNOMZPUJL-UHFFFAOYSA-N.svg)
2-[4-(Furan-2-ylcarbonyl)piperazin-1-yl]-4-methyl-7,8-dihydroquinazolin-5(6H)-one
CAS 879625-78-2C18H20N4O3
2-(2-Methylbenzyl)-5-(3,4,5-trimethoxyphenyl)-2H-tetrazole
CAS 695222-68-5C18H20N4O3
![Ethyl 4-[(4-methoxybenzyl)amino]-1-methyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate chemical structure, C18H20N4O3, CAS 685109-26-6](/s/XBFBLDTYZLKDMO-UHFFFAOYSA-N.svg)
Ethyl 4-[(4-methoxybenzyl)amino]-1-methyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate
CAS 685109-26-6C18H20N4O3
2-(4-Benzylpiperazin-1-yl)-5-nitrobenzamide
CAS 378220-71-4C18H20N4O3
N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-1-(pyrimidin-2-yl)piperidine-4-carboxamide
CAS 605621-08-7C18H20N4O3
4-(3-Methylpiperidin-1-yl)-3-nitro-N-pyridin-3-ylbenzamide
CAS 521282-06-4C18H20N4O3
2-(2-(4-(Dimethylamino)benzylidene)hydrazino)-N-(3-methoxyphenyl)-2-oxoacetamide
CAS 357412-75-0C18H20N4O3
2-(2-(4-(Dimethylamino)benzylidene)hydrazino)-N-(4-methoxyphenyl)-2-oxoacetamide
CAS 357412-84-1C18H20N4O3
N-(1,3-Benzodioxol-5-yl)-2-(4-pyridin-2-ylpiperazin-1-yl)acetamide
CAS 491867-85-7C18H20N4O3
![4-{[(3-Oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetyl]amino}benzamide chemical structure, C18H20N4O3, CAS 1282100-35-9](/s/FKRKWEUFWQRXNI-UHFFFAOYSA-N.svg)
4-{[(3-Oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetyl]amino}benzamide
CAS 1282100-35-9C18H20N4O3
![8-Ethyl-2-[4-(2-methoxyethoxy)phenylamino]-8H-pyrido[2,3-d]pyrimidin-7-one chemical structure, C18H20N4O3, CAS 211245-18-0](/s/MQTLLTKZDOQNDH-UHFFFAOYSA-N.svg)
8-Ethyl-2-[4-(2-methoxyethoxy)phenylamino]-8H-pyrido[2,3-d]pyrimidin-7-one
CAS 211245-18-0C18H20N4O3
![2-[3-(Hydroxymethyl)-4-oxo-2-phenylpyrazolo[1,5-a]pyrazin-5(4H)-yl]-N-propylacetamide chemical structure, C18H20N4O3, CAS 1775440-04-4](/s/IJTABLJDMFMHRJ-UHFFFAOYSA-N.svg)
2-[3-(Hydroxymethyl)-4-oxo-2-phenylpyrazolo[1,5-a]pyrazin-5(4H)-yl]-N-propylacetamide
CAS 1775440-04-4C18H20N4O3
![1-(tert-Butyl)-5-(2-(4-methoxyphenyl)-2-oxoethyl)-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one chemical structure, C18H20N4O3, CAS 863448-39-9](/s/VXOJLAAELUOUDY-UHFFFAOYSA-N.svg)
1-(tert-Butyl)-5-(2-(4-methoxyphenyl)-2-oxoethyl)-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one
CAS 863448-39-9C18H20N4O3
![2-[3-(Hydroxymethyl)-4-oxo-2-phenylpyrazolo[1,5-a]pyrazin-5(4H)-yl]-N-isopropylacetamide chemical structure, C18H20N4O3, CAS 1775462-78-6](/s/OBGRXJPKVVVRFN-UHFFFAOYSA-N.svg)
2-[3-(Hydroxymethyl)-4-oxo-2-phenylpyrazolo[1,5-a]pyrazin-5(4H)-yl]-N-isopropylacetamide
CAS 1775462-78-6C18H20N4O3
Jak-IN-3
CAS 1400876-94-9C18H20N4O3
![(2S)-N-(5-Cyclopropyl-1H-pyrazol-3-yl)-2-[4-(2-oxo-1,3-oxazolidin-3-yl)phenyl]propanamide chemical structure, C18H20N4O3, CAS 437982-79-1](/s/XNKBKFNLOYVTSF-NSHDSACASA-N.svg)
(2S)-N-(5-Cyclopropyl-1H-pyrazol-3-yl)-2-[4-(2-oxo-1,3-oxazolidin-3-yl)phenyl]propanamide
CAS 437982-79-1C18H20N4O3
Oxazolo(4,5-b)pyridin-2(3H)-one, 3-((4-(2-methoxyphenyl)-1-piperazinyl)methyl)-
CAS 146529-56-8C18H20N4O3
- 1,7-Dimethyl-4-oxo-N-((tetrahydrofuran-2-yl)methyl)-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide896814-66-7C18H20N4O3
- Ethyl 6-imino-11-methyl-2-oxo-7-(propan-2-yl)-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxylate799251-01-7C18H20N4O3
- 2,5-Dimethyl-N-[2-(4-methyl-5-oxo-3-phenyl-4,5-dihydro-1H-1,2,4-triazol-1-yl)ethyl]furan-3-carboxamide1203151-18-1C18H20N4O3
- N-((1-(Pyrimidin-2-yl)piperidin-4-yl)methyl)benzo[d][1,3]dioxole-5-carboxamide1235118-34-9C18H20N4O3
- 2-Cyclobutyl-7-(3,4,5-trimethoxyphenyl)[1,2,4]triazolo[1,5-a]pyrimidine1435985-30-0C18H20N4O3
- Ethyl 2-(6-(pyrrolidin-1-yl)pyridazine-3-carboxamido)benzoate1396879-84-7C18H20N4O3
- (Z)-2-(Dimethylamino)-4-oxo-4-((4-(phenyldiazenyl)phenyl)amino)butanoic acid1048016-21-2C18H20N4O3
- N-(1-Cyanocyclohexyl)-2-[4-(1,3,4-oxadiazol-2-yl)phenoxy]propanamide878212-98-7C18H20N4O3
- 2-(3-(4-Methoxyphenyl)-2-oxoimidazolidin-1-yl)-N-(pyridin-4-ylmethyl)acetamide1257553-60-8C18H20N4O3
- 5-((3-Methoxybenzyl)amino)-1,3,6-trimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione946202-97-7C18H20N4O3
- N-(2-Methoxy-5-(6-methoxyimidazo[1,2-b]pyridazin-2-yl)phenyl)butyramide953214-84-1C18H20N4O3
- N-[5-(4-Methyl-1-piperazinyl)-2-nitrophenyl]benzamide897026-40-3C18H20N4O3
- 3,5-Dimethyl-N-[3-(2-methylpropyl)-4-oxo-3,4-dihydroquinazolin-6-yl]-1,2-oxazole-4-carboxamide1574335-05-9C18H20N4O3
- N-(Benzo[d][1,3]dioxol-5-ylmethyl)-6-(piperidin-1-yl)pyridazine-3-carboxamide1396786-64-3C18H20N4O3
- 2-[2-(2,3-Dihydro-1H-indol-1-yl)-2-oxoethyl]-6-(morpholin-4-yl)pyrimidin-4(3H)-one1260583-92-3C18H20N4O3
- 5-((4-Methoxybenzyl)amino)-1,3,6-trimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione941909-88-2C18H20N4O3
- N-[2-(1H-Imidazol-4-yl)ethyl]-2-(2-methylpropyl)-1,3-dioxo-2,3-dihydro-1H-isoindole-5-carboxamide1144438-18-5C18H20N4O3
- 6-Ethyl-5-((2-methoxyphenyl)amino)-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione946305-25-5C18H20N4O3
- 2-(Butan-2-yl)-N-[2-(1H-imidazol-4-yl)ethyl]-1,3-dioxo-2,3-dihydro-1H-isoindole-5-carboxamide1144479-02-6C18H20N4O3
- 6-Ethyl-5-((4-methoxyphenyl)amino)-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione941914-69-8C18H20N4O3
- 6-Amino-4-(2,3-dimethoxyphenyl)-3-propyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile300835-62-5C18H20N4O3
- 6-Amino-4-(2,5-dimethoxyphenyl)-3-propyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile371234-31-0C18H20N4O3
- 9-(3,4-Dimethoxyphenyl)-6-methyl-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one1087655-93-3C18H20N4O3
- 2'-(Cyclopropanecarboxamido)-4-isopropoxy-[2,4'-bipyridine]-5-carboxamide1702428-72-5C18H20N4O3
- N-((2-(3,3-Dimethyltriaz-1-en-1-yl)phenyl)(hydroxy)methylidene)phenylalanine89331-42-0C18H20N4O3
- 6-Amino-4-(3,4-diethoxyphenyl)-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile315244-91-8C18H20N4O3
- 7-(3-Deoxy-|A-D-erythro-pentofuranosyl)-5-(4-methyl-phenyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine2257426-67-6C18H20N4O3
- N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-4-(4-pyridinyl)tetrahydro-1(2H)-pyrazinecarboxamide865659-75-2C18H20N4O3
- N-(p-(3,3-Dimethyl-1-triazeno)benzoyl)-3-phenylalanine89331-39-5C18H20N4O3
- Ethyl 6-imino-13-methyl-2-oxo-7-propyl-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxylate842962-81-6C18H20N4O3
- N-(Furan-2-ylmethyl)-1-(4-methoxyphenyl)-5-propyl-1H-1,2,3-triazole-4-carboxamide951902-18-4C18H20N4O3
- 1-Ethyl-4-[(4-methoxybenzyl)amino]-3-methyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid860785-53-1C18H20N4O3
- 4-Benzo[1,3]dioxol-5-ylmethyl-piperazine-1-carboxylic acid pyridin-3-ylamide898236-94-7C18H20N4O3
- 7-(3-Deoxy-|A-D-erythro-pentofuranosyl)-5-(3-methyl-phenyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine2257426-72-3C18H20N4O3
- Ethyl 4-[(4-methoxybenzyl)amino]-3-methyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate860651-19-0C18H20N4O3
- 2-[4-(2-Furoyl)piperazin-1-yl]-7-methyl-7,8-dihydroquinazolin-5(6H)-one925191-65-7C18H20N4O3
- 4-Benzo[1,3]dioxol-5-ylmethyl-piperazine-1-carboxylic acid pyridin-2-ylamide898236-97-0C18H20N4O3
- 3-(Pyrazine-2-carboxamido)cyclohexyl phenylcarbamate1396858-03-9C18H20N4O3
- 1-(4-Acetylphenyl)-3-[[3-(dimethylamino)benzoyl]amino]urea706773-14-0C18H20N4O3
- 5-[(1-Ethyl-8-methylpyrazolo[3,4-b]quinolin-3-yl)amino]-5-oxopentanoic acid876667-18-4C18H20N4O3
- 1-(1-(4-Ethoxyphenyl)-5-oxopyrrolidin-3-yl)-3-(pyridin-2-yl)urea891102-74-2C18H20N4O3
- N-(3-(1H-Imidazol-1-yl)propyl)-2-(5-(3-methoxyphenyl)isoxazol-3-yl)acetamide953203-57-1C18H20N4O3
- Ethyl 7-amino-2-ethyl-3-(4-methoxyphenyl)pyrazolo[1,5-a]pyrimidine-6-carboxylate925601-28-1C18H20N4O3
- 1-[2-(6-Oxo-4-phenyl-1,6-dihydropyrimidin-1-yl)acetyl]piperidine-4-carboxamide1058423-17-8C18H20N4O3
- 5-((3-Methoxyphenethyl)amino)-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione946253-20-9C18H20N4O3
- N-(2-(3,5-Dimethyl-1H-pyrazol-1-yl)ethyl)-1-(5-(furan-2-yl)isoxazol-3-yl)cyclopropanecarboxamide1286705-56-3C18H20N4O3
- 2-(4-Acetylphenoxy)-N-(6-(pyrrolidin-1-yl)pyrimidin-4-yl)acetamide1396869-99-0C18H20N4O3
- 3-Methyl-N-(6-(pyrrolidin-1-yl)pyrimidin-4-yl)-2,3-dihydrobenzo[b][1,4]dioxine-2-carboxamide1421584-10-2C18H20N4O3
- N-[4,6-Dimethyl-2-(pyrrolidin-1-yl)pyrimidin-5-yl]-2H-1,3-benzodioxole-5-carboxamide1448045-46-2C18H20N4O3
- 9-(4-Methoxyphenyl)-6,6-dimethyl-6,7,9,10-tetrahydro-4H-[1,2,5]oxadiazolo[3,4-b][1,4]benzodiazepin-8(5H)-one898104-18-2C18H20N4O3
- 3-Nitro-4-piperidin-1-yl-N-(pyridin-3-ylmethyl)benzamide712293-26-0C18H20N4O3
- Phenol, 4-((5-(3,4-dimethoxyphenyl)-2H-tetrazol-2-yl)methyl)-2,6-dimethyl-104186-19-8C18H20N4O3
- 6-Amino-4-(4-isopropoxyphenyl)-3-(methoxymethyl)-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile445265-85-0C18H20N4O3
- Methyl 2-[(4-(2-pyridyl)piperazinyl)carbonylamino]benzoate891007-65-1C18H20N4O3
- 1-[7-(Furan-2-yl)-5-oxo-5,6,7,8-tetrahydroquinazolin-2-yl]piperidine-4-carboxamide929807-88-5C18H20N4O3
- Isopropyl 8-(4-methoxyphenyl)-4,7-dimethylpyrazolo[5,1-c][1,2,4]triazine-3-carboxylate908507-29-9C18H20N4O3
- 3-[1-(3-Methoxyphenyl)-5-oxopyrrolidin-3-yl]-1-(4-methylpyridin-2-yl)urea891098-44-5C18H20N4O3
- 1-(1-(4-Methoxyphenyl)-5-oxopyrrolidin-3-yl)-3-(pyridin-3-ylmethyl)urea891099-50-6C18H20N4O3
- 1-(1-(4-Methoxyphenyl)-5-oxopyrrolidin-3-yl)-3-(pyridin-2-ylmethyl)urea891099-58-4C18H20N4O3
- 1-(1-(4-Methoxyphenyl)-5-oxopyrrolidin-3-yl)-3-(3-methylpyridin-2-yl)urea897619-82-8C18H20N4O3
- 5-((2-Methoxybenzyl)amino)-1,3,6-trimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione941954-68-3C18H20N4O3
- 1-(8-(3,4-Dimethoxyphenyl)-7-ethyl-4-methylpyrazolo[5,1-c][1,2,4]triazin-3-yl)ethanone896669-08-2C18H20N4O3
- N-[1-Methyl-2-(morpholin-4-ylmethyl)-1H-benzimidazol-5-yl]furan-2-carboxamide931344-72-8C18H20N4O3
- 3-(5,6-Dimethoxy-3-pyridinyl)-6-(4-morpholinyl)imidazo[1,2-a]pyridine1246184-37-1C18H20N4O3
- 1-[(6-Oxo-3-phenyl-1(6H)-pyridazinyl)acetyl]-4-piperidinecarboxamide1219547-49-5C18H20N4O3
- 3-(5-(1-(Cyclobutanecarbonyl)azetidin-3-yl)-1,2,4-oxadiazol-3-yl)-N-methylbenzamide1396794-93-6C18H20N4O3
- N-[2-(2-Methoxyphenyl)ethyl]-1-(pyrazine-2-carbonyl)azetidine-3-carboxamide1396812-74-0C18H20N4O3
- N-{4-[4-(Pyridazin-3-yloxy)piperidine-1-carbonyl]phenyl}acetamide1797186-44-7C18H20N4O3
- 6-Methoxy-N-(1-(tetrahydro-2H-pyran-4-yl)-1H-pyrazol-4-yl)-1H-indole-2-carboxamide1797335-68-2C18H20N4O3
- N-(2-(3,5-Dimethyl-1H-pyrazol-1-yl)ethyl)-5-(4-methoxyphenyl)oxazole-2-carboxamide1798490-74-0C18H20N4O3
- N-((1-(Benzo[d]oxazol-2-yl)piperidin-4-yl)methyl)-5-methylisoxazole-3-carboxamide1797725-55-3C18H20N4O3
- N-((1-(Benzo[d]oxazol-2-yl)pyrrolidin-2-yl)methyl)-3,5-dimethylisoxazole-4-carboxamide1798678-27-9C18H20N4O3
- N-(Furan-2-ylmethyl)-5-methyl-N-((1-methyl-1,4,5,6-tetrahydrocyclopenta[c]pyrazol-3-yl)methyl)isoxazole-3-carboxamide1798517-23-3C18H20N4O3
- 2,5-Dimethyl-N-[(1r,4r)-4-[(3-cyanopyrazin-2-yl)oxy]cyclohexyl]furan-3-carboxamide2034317-36-5C18H20N4O3
- 1-(4-(4-(6-Methoxypyrimidine-4-carbonyl)piperazin-1-yl)phenyl)ethanone2034282-31-8C18H20N4O3
- Ethyl 2-(6-(pyrrolidin-1-yl)pyrimidine-4-carboxamido)benzoate1900037-63-9C18H20N4O3
Frequently asked questions
What is the molar mass of C18H20N4O3?
The molar mass of C18H20N4O3 is 340.38 g/mol, calculated from standard atomic weights for 18 carbon atoms, 20 hydrogen atoms, 4 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 340.1535 Da.
How many compounds have the formula C18H20N4O3?
CompoundList lists 324 compounds with the molecular formula C18H20N4O3, including Ethyl 2-imino-10-methyl-5-oxo-1-propyl-1,5-dihydro-2H-dipyrido[1,2-A:2,3-D]pyrimidine-3-carboxylate, Benzyl 2-(1-tert-butyl-4-oxopyrazolo[3,4-d]pyrimidin-5-yl)acetate, N-[1-Methyl-2-[2-(propanoylamino)ethyl]benzimidazol-5-yl]furan-2-carboxamide. 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 C18H20N4O3?
C18H20N4O3 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.