Molecular formula
C21H20N4O3
196 compounds have this formula on CompoundList.
- Molar mass
- 376.42g/mol
- Monoisotopic mass
- 376.1535Da
- Atoms
- 48
- Elements
- 4
- Rings plus double bonds
- 14
The formula C21H20N4O3 describes a molecule made of 21 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 × 2167.01%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 205.36%1.008 × 20 = 20.160 g/mol
- N Nitrogen × 414.88%14.007 × 4 = 56.028 g/mol
- O Oxygen × 312.75%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C21H20N4O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 196 compounds
Entinostat
CAS 209783-80-2C21H20N4O3
Picotamide
CAS 32828-81-2C21H20N4O3
8-(4-Methoxy-phenyl)-1-methyl-9-phenethyl-3,9-dihydro-purine-2,6-dione
CAS 61080-58-8C21H20N4O3
![5-(4-Methoxybenzyl)-4-oxo-N-phenyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide chemical structure, C21H20N4O3, CAS 303986-79-0](/s/IJHCMRDPLFBMPV-UHFFFAOYSA-N.svg)
5-(4-Methoxybenzyl)-4-oxo-N-phenyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide
CAS 303986-79-0C21H20N4O3
Piperazine, 4-benzoyl-1-(1,2-dioxo-2-(1H-pyrrolo(2,3-b)pyridin-3-yl)ethyl)-2-methyl-, (2R)-
CAS 357262-60-3C21H20N4O3
5-Oxo-N-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-1-(p-tolyl)pyrrolidine-3-carboxamide
CAS 899952-35-3C21H20N4O3
![Ethyl 2-amino-1-(4-ethoxyphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate chemical structure, C21H20N4O3, CAS 30119-35-8](/s/QKWZBKHWRZAOLL-UHFFFAOYSA-N.svg)
Ethyl 2-amino-1-(4-ethoxyphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate
CAS 30119-35-8C21H20N4O3
Drak2-IN-1
CAS 871837-60-4C21H20N4O3
Verrucine B
CAS 252032-23-8C21H20N4O3
![3-[2-(4-Methoxyphenyl)-2-oxoethyl]-4-oxo-4,6,7,8,9,10-hexahydro-3H-pyrimido[4',5':4,5]pyrrolo[1,2-a]azepine-11-carbonitrile chemical structure, C21H20N4O3, CAS 300394-00-7](/s/DHOFMSLXURSNAL-UHFFFAOYSA-N.svg)
3-[2-(4-Methoxyphenyl)-2-oxoethyl]-4-oxo-4,6,7,8,9,10-hexahydro-3H-pyrimido[4',5':4,5]pyrrolo[1,2-a]azepine-11-carbonitrile
CAS 300394-00-7C21H20N4O3
![N-(4-Methoxyphenethyl)-1-methyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide chemical structure, C21H20N4O3, CAS 864853-65-6](/s/LHUCQWQCDQJVLF-UHFFFAOYSA-N.svg)
N-(4-Methoxyphenethyl)-1-methyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide
CAS 864853-65-6C21H20N4O3
![(4Z)-4-[(1,3-Dimethyl-2-oxobenzimidazol-5-yl)methylidene]-1-(4-ethylphenyl)pyrazolidine-3,5-dione chemical structure, C21H20N4O3, CAS 667906-85-6](/s/GPFOIEMXLJPREM-WJDWOHSUSA-N.svg)
(4Z)-4-[(1,3-Dimethyl-2-oxobenzimidazol-5-yl)methylidene]-1-(4-ethylphenyl)pyrazolidine-3,5-dione
CAS 667906-85-6C21H20N4O3
6-Oxo-1-(2-oxo-2-(m-tolylamino)ethyl)-N-(p-tolyl)-1,6-dihydropyridazine-3-carboxamide
CAS 932990-70-0C21H20N4O3
(3-(4-Nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)(piperidin-1-yl)methanone
CAS 882229-66-5C21H20N4O3
Piperazine, 4-benzoyl-1-(1,2-dioxo-2-(1H-pyrrolo(2,3-b)pyridin-3-yl)ethyl)-2-methyl-, (2S)-
CAS 357262-66-9C21H20N4O3
![N-[2-(5-Methoxy-1H-indol-3-yl)ethyl]-2-(4-oxoquinazolin-3(4H)-yl)acetamide chemical structure, C21H20N4O3, CAS 919741-75-6](/s/ICIVVFYKPJXEJD-UHFFFAOYSA-N.svg)
N-[2-(5-Methoxy-1H-indol-3-yl)ethyl]-2-(4-oxoquinazolin-3(4H)-yl)acetamide
CAS 919741-75-6C21H20N4O3
![7-(3,4-Dimethoxyphenyl)-2-(4-methoxybenzyl)[1,2,4]triazolo[1,5-a]pyrimidine chemical structure, C21H20N4O3, CAS 1436003-63-2](/s/DZRIYYZYTRISNW-UHFFFAOYSA-N.svg)
7-(3,4-Dimethoxyphenyl)-2-(4-methoxybenzyl)[1,2,4]triazolo[1,5-a]pyrimidine
CAS 1436003-63-2C21H20N4O3
1-Methyl-N-(4-methyl-5-oxo-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl)-3-phenyl-1H-pyrazole-5-carboxamide
CAS 1286718-75-9C21H20N4O3
![N-(2,5-Dimethoxybenzyl)-4-phenoxy-1H-pyrazolo[4,3-c]pyridin-3-amine chemical structure, C21H20N4O3, CAS 816454-18-9](/s/XWQFWBSOLVEUDU-UHFFFAOYSA-N.svg)
N-(2,5-Dimethoxybenzyl)-4-phenoxy-1H-pyrazolo[4,3-c]pyridin-3-amine
CAS 816454-18-9C21H20N4O3
![7-Phenyl-N-(3,4,5-trimethoxyphenyl)pyrrolo[2,1-f][1,2,4]triazin-2-amine chemical structure, C21H20N4O3, CAS 1232397-16-8](/s/NRQSCGVAXSQZCR-UHFFFAOYSA-N.svg)
7-Phenyl-N-(3,4,5-trimethoxyphenyl)pyrrolo[2,1-f][1,2,4]triazin-2-amine
CAS 1232397-16-8C21H20N4O3
![N-(4-Methoxy-2-methylphenyl)-2-{8-methyl-4-oxo-3H,4H,5H-pyrimido[5,4-b]indol-3-yl}acetamide chemical structure, C21H20N4O3, CAS 1105215-89-1](/s/NLIXQMXEHZWLRQ-UHFFFAOYSA-N.svg)
N-(4-Methoxy-2-methylphenyl)-2-{8-methyl-4-oxo-3H,4H,5H-pyrimido[5,4-b]indol-3-yl}acetamide
CAS 1105215-89-1C21H20N4O3
3-(sec-Butyl)-1-((3-phenyl-1,2,4-oxadiazol-5-yl)methyl)quinazoline-2,4(1H,3H)-dione
CAS 1105240-68-3C21H20N4O3
![3-(3,4-Dimethoxyphenyl)-5-[3-(2,5-dimethylphenyl)-1H-pyrazol-5-yl]-1,2,4-oxadiazole chemical structure, C21H20N4O3, CAS 1239577-45-7](/s/BXMUEJMKMKYGQL-UHFFFAOYSA-N.svg)
3-(3,4-Dimethoxyphenyl)-5-[3-(2,5-dimethylphenyl)-1H-pyrazol-5-yl]-1,2,4-oxadiazole
CAS 1239577-45-7C21H20N4O3
![N-(3-Methoxybenzyl)-2-(8-methyl-4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)acetamide chemical structure, C21H20N4O3, CAS 1105236-82-5](/s/DTWGERILYRLTJW-UHFFFAOYSA-N.svg)
N-(3-Methoxybenzyl)-2-(8-methyl-4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)acetamide
CAS 1105236-82-5C21H20N4O3
- N-Cyclopentyl-2-(3-(5-(furan-2-yl)-1,3,4-oxadiazol-2-yl)-1H-indol-1-yl)acetamide1021074-67-8C21H20N4O3
- 5-(3-(3,4-Dimethoxyphenyl)-1H-pyrazol-4-yl)-3-(3,4-dimethylphenyl)-1,2,4-oxadiazole1171706-41-4C21H20N4O3
- 1 suppliers4-(2-((4-(4-Morpholinyl)phenyl)amino)-4-pyrimidinyl)benzoic acid945749-71-3C21H20N4O3
- 3-(3,5-Dimethoxyphenyl)-5-[3-(2,5-dimethylphenyl)-1H-pyrazol-5-yl]-1,2,4-oxadiazole1187447-28-4C21H20N4O3
- N-(2-Methoxybenzyl)-2-(8-methyl-4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)acetamide1105236-50-7C21H20N4O3
- 3-Isopropyl-1-((3-(m-tolyl)-1,2,4-oxadiazol-5-yl)methyl)quinazoline-2,4(1H,3H)-dione1105240-23-0C21H20N4O3
- 3-Isobutyl-1-((3-phenyl-1,2,4-oxadiazol-5-yl)methyl)quinazoline-2,4(1H,3H)-dione1105221-99-5C21H20N4O3
- 3-Isopropyl-1-((3-(o-tolyl)-1,2,4-oxadiazol-5-yl)methyl)quinazoline-2,4(1H,3H)-dione1105249-79-3C21H20N4O3
- 2-(1-(Cyclopropylmethyl)-1H-pyrrolo[2,3-b]pyridin-2-yl)-7-methoxy-1-methyl-1H-benzo[d]imidazole-5-carboxylic acid1549812-89-6C21H20N4O3
- 2-(3,5-Dimethyl-1H-pyrazol-4-yl)-6-morpholin-4-ylbenzo[de]isoquinoline-1,3-dione357613-35-5C21H20N4O3
- 3-(2,4-Dioxo-1H-quinazolin-3-yl)-N-[2-(1H-indol-3-yl)ethyl]propanamide896372-63-7C21H20N4O3
- (E)-1-[4-(Furan-2-carbonyl)piperazin-1-yl]-3-(4-imidazol-1-ylphenyl)prop-2-en-1-one878905-60-3C21H20N4O3
- Methyl 2-amino-1-[2-(4-methoxyphenyl)ethyl]-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate431938-35-1C21H20N4O3
- Ethyl 7-(4-methoxyphenyl)-5-phenyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate457951-63-2C21H20N4O3
- 3-(2-(4-Oxoquinazolin-3(4H)-yl)acetyl)-3,4,5,6-tetrahydro-1H-1,5-methanopyrido[1,2-a][1,5]diazocin-8(2H)-one1206999-09-8C21H20N4O3
- 6-(Furan-2-yl)-9-(4-methoxyphenyl)-2-methyl-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one876668-18-7C21H20N4O3
- 2-(3-Ethyl-4-oxo-7-phenyl-3,4-dihydro-5H-pyrrolo[3,2-d]pyrimidin-5-yl)-N-(furan-2-ylmethyl)acetamide1251654-83-7C21H20N4O3
- (E)-3-(4-Methoxyphenyl)-N'-((E)-3-(2-methoxyphenyl)allylidene)-1H-pyrazole-5-carbohydrazide1048932-39-3C21H20N4O3
- 4-(2-(2-Methoxy-4-(2-(2-methoxyphenyl)diazenyl)-5-methylphenyl)diazenyl)phenol93805-00-6C21H20N4O3
- 1-(3-(3,4-Dimethoxyphenyl)-5-(quinoxalin-6-yl)-4,5-dihydro-1H-pyrazol-1-yl)ethanone942034-25-5C21H20N4O3
- 4-(4-Cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,6-naphthyridine-3-carboxamide2084136-51-4C21H20N4O3
- 7-(3-Deoxy-|A-D-erythro-pentofuranosyl)-5-(2-naphthalenyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine2257426-86-9C21H20N4O3
- 5,8-Ethano-1H-(1,2,4)triazolo(1,2-a)(1,2,4)triazine-1,3,7(2H,8H)-trione, dihydro-2-phenyl-6-(2-phenylethyl)-60532-36-7C21H20N4O3
- 1-Morpholino-2-{4-[4-(2-pyridinyl)-2-pyrimidinyl]phenoxy}-1-ethanone477870-55-6C21H20N4O3
- Ethyl 2-amino-1-(2-ethoxyphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate499185-42-1C21H20N4O3
- 5-(2-Furyl)-2-(1,2,3,4-tetrahydro-1-isoquinolinyl)-4-(1H-1,2,4-triazol-1-yl)-1,3-cyclohexanedione1005273-48-2C21H20N4O3
- 2-Methoxy-4-(6-(4-methoxybenzylamino)imidazo[1,2-b]pyridazin-3-yl)phenol1012344-51-2C21H20N4O3
- 1-Allyl-2-(3,4,5-trimethoxyphenyl)-1H-imidazo[4,5-b]quinoxaline848742-23-4C21H20N4O3
- Methyl 7-(2-(benzyloxy)phenyl)-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate681470-89-3C21H20N4O3
- Benzyl 7-(3-methoxyphenyl)-5-methyl-4H,7H-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate380548-39-0C21H20N4O3
- N-[3-Cyano-4,5-dimethyl-1-(pyridin-3-yl)-1H-pyrrol-2-yl]-2-(2-methoxyphenoxy)acetamide920453-08-3C21H20N4O3
- N-(3-(1H-Pyrazol-3-yl)phenyl)-1-(3-methoxyphenyl)-5-oxopyrrolidine-3-carboxamide1207057-02-0C21H20N4O3
- N-(2-((9H-Fluoren-2-yl)amino)-2-oxoethyl)-3-methoxy-1-methyl-1H-pyrazole-4-carboxamide1251578-82-1C21H20N4O3
- 2-(2-Oxobenzo[d]oxazol-3(2H)-yl)-N-(3-(2-phenyl-1H-imidazol-1-yl)propyl)acetamide1421508-84-0C21H20N4O3
- N-(1,7-Dimethylpyrazolo[3,4-b]quinolin-3-yl)-3,5-dimethoxybenzamide714935-99-6C21H20N4O3
- 1-Benzyl-N-(2-methoxyethyl)-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide896818-11-4C21H20N4O3
- N-(2-Methoxy-5-methylphenyl)-1,9-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide864855-75-4C21H20N4O3
- N-(4-Ethoxyphenyl)-1,9-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide864855-50-5C21H20N4O3
- [[5-[(Acetyloxy)methyl]-1-phenyl-1H-pyrazol-3-yl]methylene]phenylhydrazide acetic acid3082-93-7C21H20N4O3
- N-(4-Methoxybenzyl)-3-(4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)propanamide1105200-91-6C21H20N4O3
- 1-{4-[4-Oxo-3(4H)-quinazolinyl]benzoyl}-4-piperidinecarboxamide1190279-67-4C21H20N4O3
- 3-(4-Ethoxyphenyl)-5-[3-(4-ethoxyphenyl)-1H-pyrazol-5-yl]-1,2,4-oxadiazole1240306-72-2C21H20N4O3
- N-[2-(4-Methoxy-1H-indol-1-yl)ethyl]-2-[1-oxo-2(1H)-phthalazinyl]acetamide1401540-11-1C21H20N4O3
- N-(2-((6-Amino-5-(4-phenoxyphenyl)pyrimidin-4-yl)oxy)ethyl)acrylamide1415821-44-1C21H20N4O3
- 2-((1-(6-Methoxy-1H-indole-2-carbonyl)piperidin-4-yl)oxy)nicotinonitrile1797959-07-9C21H20N4O3
- N-(1H-1,3-Benzimidazol-2-ylmethyl)-2-(2-methoxyethyl)-1-oxo-1,2-dihydro-4-isoquinolinecarboxamide1574514-28-5C21H20N4O3
- N-(2-((4,6-Dimethyl-2-phenoxypyrimidin-5-yl)amino)-2-oxoethyl)benzamide1788676-34-5C21H20N4O3
- 3-(3,5-Dimethylisoxazol-4-yl)-N-(5-methyl-2-phenyloxazolo[5,4-b]pyridin-6-yl)propanamide2034521-26-9C21H20N4O3
- N-(2-Furylmethyl)-2-(5-oxo-2-phenyl-5,7,8,9-tetrahydro-6H-pyrimido[5,4-c]azepin-6-yl)acetamide2096311-79-2C21H20N4O3
- OT antagonist 1 demethyl derivative2763705-17-3C21H20N4O3
- 1H-Isoindole-1,3(2H)-dione, 2-((1-(4-morpholinylmethyl)-1H-benzimidazol-2-yl)methyl)-115398-75-9C21H20N4O3
- Ethyl 7-(2-methoxyphenyl)-5-phenyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate727367-90-0C21H20N4O3
- 1-(3-Methoxypropyl)-4-oxo-N-phenyl-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide900281-82-5C21H20N4O3
- 2-{4-[4-(6-Methoxy-pyridin-3-yl)-imidazol-1-yl]-butyl}-isoindole-1,3-dione790262-68-9C21H20N4O3
- N-[4-(Acetylamino)phenyl]-1-(4-ethylphenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide898612-21-0C21H20N4O3
- 2-(4-(6-Oxo-3-phenylpyridazin-1(6H)-yl)butanamido)benzamide952985-18-1C21H20N4O3
- 4-(4-(6-Oxo-3-phenylpyridazin-1(6H)-yl)butanamido)benzamide953159-04-1C21H20N4O3
- N-[2-(Dimethylamino)ethyl]-6-(furan-2-yl)-3-phenyl[1,2]oxazolo[5,4-b]pyridine-4-carboxamide932161-15-4C21H20N4O3
- 1-(2-((4-Ethylphenyl)amino)-2-oxoethyl)-6-oxo-N-phenyl-1,6-dihydropyridazine-3-carboxamide946366-62-7C21H20N4O3
- 6-Oxo-1-(2-oxo-2-(phenethylamino)ethyl)-N-phenyl-1,6-dihydropyridazine-3-carboxamide946207-86-9C21H20N4O3
- 2-[4-(1H-Indol-2-ylcarbonyl)piperazin-1-yl]-2-oxo-N-phenylacetamide1081132-86-6C21H20N4O3
- N-(4-Methoxybenzyl)-2-(8-methyl-4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)acetamide1105208-00-1C21H20N4O3
- 2-(1-(4-Methylbenzyl)-6-oxo-1,6-dihydropyridine-3-carbonyl)-N-phenylhydrazinecarboxamide1105206-70-9C21H20N4O3
- N-(2-Methoxyethyl)-2-(3-(5-phenyl-1,3,4-oxadiazol-2-yl)-1H-indol-1-yl)acetamide1021118-67-1C21H20N4O3
- 2-(3-Methoxypropyl)-8-(2-pyridylmethyl)pyrido[4,3-b][1,6]naphthyridine-1,9(2H,8H)-dione1158772-31-6C21H20N4O3
- N-(2-Ethoxybenzyl)-2-(4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)acetamide1184984-61-9C21H20N4O3
- N-(2,3-Dihydro-1H-inden-2-yl)-N~2~-[(4-oxoquinazolin-3(4H)-yl)acetyl]glycinamide1219553-04-4C21H20N4O3
- N-(2-(3-(Furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-3-(1H-indol-3-yl)propanamide1219903-19-1C21H20N4O3
- N-[2-(5-Methoxy-1H-indol-1-yl)ethyl]-2-(1-oxophthalazin-2(1H)-yl)acetamide1324075-56-0C21H20N4O3
- N-[1-(2-Methoxyethyl)-1H-indol-4-yl]-2-(4-oxoquinazolin-3(4H)-yl)acetamide1351682-00-2C21H20N4O3
- N-[2-(4-Methoxy-1H-indol-1-yl)ethyl]-3-methyl-4-oxo-3,4-dihydro-1-phthalazinecarboxamide1401598-58-0C21H20N4O3
- N-[2-(5-Methoxy-1H-indol-1-yl)ethyl]-3-methyl-4-oxo-3,4-dihydro-1-phthalazinecarboxamide1374514-46-1C21H20N4O3
- N-[2-(4-Methoxy-1H-indol-1-yl)ethyl]-2-(4-oxoquinazolin-3(4H)-yl)acetamide1351703-40-6C21H20N4O3
- Ethyl 5-(2-(1-methyl-1H-indol-3-yl)acetamido)pyrazolo[1,5-a]pyridine-3-carboxylate1396710-85-2C21H20N4O3
- N-(2-(3-Hydroxy-2-oxoquinoxalin-1(2H)-yl)ethyl)-3-(1H-indol-3-yl)propanamide1574479-55-2C21H20N4O3
- N-(2-(3-Hydroxy-2-oxoquinoxalin-1(2H)-yl)ethyl)-2,3-dimethyl-1H-indole-5-carboxamide1574518-41-4C21H20N4O3
Frequently asked questions
What is the molar mass of C21H20N4O3?
The molar mass of C21H20N4O3 is 376.42 g/mol, calculated from standard atomic weights for 21 carbon atoms, 20 hydrogen atoms, 4 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 376.1535 Da.
How many compounds have the formula C21H20N4O3?
CompoundList lists 196 compounds with the molecular formula C21H20N4O3, including Entinostat, Picotamide, 8-(4-Methoxy-phenyl)-1-methyl-9-phenethyl-3,9-dihydro-purine-2,6-dione. 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 C21H20N4O3?
C21H20N4O3 has a degree of unsaturation of 14. 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.