Molecular formula
C21H20N4O4
205 compounds have this formula on CompoundList.
- Molar mass
- 392.42g/mol
- Monoisotopic mass
- 392.1485Da
- Atoms
- 49
- Elements
- 4
- Rings plus double bonds
- 14
The formula C21H20N4O4 describes a molecule made of 21 carbon atoms, 20 hydrogen atoms, 4 nitrogen atoms and 4 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 × 2164.28%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 205.14%1.008 × 20 = 20.160 g/mol
- N Nitrogen × 414.28%14.007 × 4 = 56.028 g/mol
- O Oxygen × 416.31%15.999 × 4 = 63.996 g/mol
Look up another formula
Compounds with the formula C21H20N4O4
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 205 compounds
(E)-2-Cyano-N-(2-methoxyphenyl)-3-(5-nitro-2-pyrrolidin-1-ylphenyl)prop-2-enamide
CAS 1164484-92-7C21H20N4O4
![(5-Methyl-3-phenyl-1,2-oxazol-4-yl)-[4-(4-nitrophenyl)piperazin-1-yl]methanone chemical structure, C21H20N4O4, CAS 313392-70-0](/s/UEWVVYWAMLXEFY-UHFFFAOYSA-N.svg)
(5-Methyl-3-phenyl-1,2-oxazol-4-yl)-[4-(4-nitrophenyl)piperazin-1-yl]methanone
CAS 313392-70-0C21H20N4O4
Thaxtomin C
CAS 140111-05-3C21H20N4O4
![N'-[2-(4-Methoxyphenoxy)ethanimidoyl]-2-phenoxynicotinohydrazide chemical structure, C21H20N4O4, CAS 303148-30-3](/s/ARIRAGBIEUJULV-UHFFFAOYSA-N.svg)
N'-[2-(4-Methoxyphenoxy)ethanimidoyl]-2-phenoxynicotinohydrazide
CAS 303148-30-3C21H20N4O4
1-(4-Methoxyphenyl)-5-oxo-N-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)pyrrolidine-3-carboxamide
CAS 899985-13-8C21H20N4O4
![2-[4-(1H-Indol-3-ylmethyl)-2,5-dioxoimidazolidin-1-yl]-N-(3-methoxyphenyl)acetamide chemical structure, C21H20N4O4, CAS 1009547-57-2](/s/RALFSZKDCZWQLN-UHFFFAOYSA-N.svg)
2-[4-(1H-Indol-3-ylmethyl)-2,5-dioxoimidazolidin-1-yl]-N-(3-methoxyphenyl)acetamide
CAS 1009547-57-2C21H20N4O4
![2,3-Dihydro-benzo[1,4]dioxine-6-carboxylic acid [1-(2-methyl-1H-indol-3-yl)-meth-(E)-ylidene-hydrazinocarbonylmethyl]-amide chemical structure, C21H20N4O4, CAS 374097-51-5](/s/IRYRDTDNRWTHHN-FOKLQQMPSA-N.svg)
2,3-Dihydro-benzo[1,4]dioxine-6-carboxylic acid [1-(2-methyl-1H-indol-3-yl)-meth-(E)-ylidene-hydrazinocarbonylmethyl]-amide
CAS 374097-51-5C21H20N4O4
![1-[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propyl]-1H-1,2,3-triazole-4-carboxylic acid chemical structure, C21H20N4O4, CAS 2137851-57-9](/s/WUXQVOXKRJELGV-UHFFFAOYSA-N.svg)
1-[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propyl]-1H-1,2,3-triazole-4-carboxylic acid
CAS 2137851-57-9C21H20N4O4
![5-Methyl-5-(4-methylphenyl)-3-[2-oxo-2-(3-oxo-2,4-dihydroquinoxalin-1-yl)ethyl]imidazolidine-2,4-dione chemical structure, C21H20N4O4, CAS 956785-77-6](/s/DBFLVEXWPYHKMT-UHFFFAOYSA-N.svg)
5-Methyl-5-(4-methylphenyl)-3-[2-oxo-2-(3-oxo-2,4-dihydroquinoxalin-1-yl)ethyl]imidazolidine-2,4-dione
CAS 956785-77-6C21H20N4O4
N'-(4-HO-3,5-DI-Meo-benzylidene)4,5-dihydro-1H-benzo(G)indazole-3-carbohydrazide
CAS 303106-45-8C21H20N4O4
4-(4-Benzoylpiperazin-1-yl)-1-methyl-3-nitroquinolin-2-one
CAS 337338-05-3C21H20N4O4
RefChem:357331
CAS 83325-20-6C21H20N4O4
![N-(2,5-Dimethoxyphenyl)-1,9-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide chemical structure, C21H20N4O4, CAS 864855-67-4](/s/BBQSNNFHBVCSTD-UHFFFAOYSA-N.svg)
N-(2,5-Dimethoxyphenyl)-1,9-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide
CAS 864855-67-4C21H20N4O4
![2-(2-Methoxyphenyl)-7-(3,4,5-trimethoxyphenyl)[1,2,4]triazolo[1,5-a]pyrimidine chemical structure, C21H20N4O4, CAS 1574409-30-5](/s/LXJBAOHRHCXLAH-UHFFFAOYSA-N.svg)
2-(2-Methoxyphenyl)-7-(3,4,5-trimethoxyphenyl)[1,2,4]triazolo[1,5-a]pyrimidine
CAS 1574409-30-5C21H20N4O4
Hdac6-IN-10
CAS 2408286-73-5C21H20N4O4
![5-(2-Naphthalenyl)-7-|A-D-ribofuranosyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine chemical structure, C21H20N4O4, CAS 1252858-01-7](/s/ZDGHYAZTACNBCQ-QTQZEZTPSA-N.svg)
5-(2-Naphthalenyl)-7-|A-D-ribofuranosyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine
CAS 1252858-01-7C21H20N4O4
N-(2-(3-(3,4-Dimethoxyphenyl)ureido)phenyl)picolinamide
CAS 1207029-16-0C21H20N4O4
![Ethyl 4-({[1-(2H-indazol-3-yl)-5-oxopyrrolidin-3-yl]carbonyl}amino)benzoate chemical structure, C21H20N4O4, CAS 1435998-75-6](/s/PCGIFIUYJFJYKO-UHFFFAOYSA-N.svg)
Ethyl 4-({[1-(2H-indazol-3-yl)-5-oxopyrrolidin-3-yl]carbonyl}amino)benzoate
CAS 1435998-75-6C21H20N4O4
Ethyl 4-(2-(2-methyl-6-oxo-4-(pyridin-2-yl)pyrimidin-1(6H)-yl)acetamido)benzoate
CAS 1251629-87-4C21H20N4O4
2-(1H-Indol-3-yl)-N-((3-((4-methoxyphenoxy)methyl)-1,2,4-oxadiazol-5-yl)methyl)acetamide
CAS 1226439-26-4C21H20N4O4
![5-(1-Naphthalenyl)-7-|A-D-ribofuranosyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine chemical structure, C21H20N4O4, CAS 1252857-98-9](/s/LQJPVHNGRTWBCV-QTQZEZTPSA-N.svg)
5-(1-Naphthalenyl)-7-|A-D-ribofuranosyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine
CAS 1252857-98-9C21H20N4O4
2-(4-Ethoxyphenyl)-5-(4-(furan-2-carbonyl)piperazin-1-yl)oxazole-4-carbonitrile
CAS 946308-69-6C21H20N4O4
![5-(2,3-Dihydro-1H-inden-5-yl)-1-(3,5-dimethoxyphenyl)-1,6a-dihydropyrrolo[3,4-d][1,2,3]triazole-4,6(3aH,5H)-dione chemical structure, C21H20N4O4, CAS 1171716-63-4](/s/SPRBHJYLYALAMD-UHFFFAOYSA-N.svg)
5-(2,3-Dihydro-1H-inden-5-yl)-1-(3,5-dimethoxyphenyl)-1,6a-dihydropyrrolo[3,4-d][1,2,3]triazole-4,6(3aH,5H)-dione
CAS 1171716-63-4C21H20N4O4
2-(2-(4-(4-Ethoxyphenyl)-6-oxopyrimidin-1(6H)-yl)acetamido)benzamide
CAS 1060191-87-8C21H20N4O4
- N-(Benzo[d][1,3]dioxol-5-yl)-1-(6-(furan-2-yl)pyridazin-3-yl)piperidine-3-carboxamide1105229-64-8C21H20N4O4
- 3-(2-(4-(Furan-2-carbonyl)piperazin-1-yl)-2-oxoethyl)-6-phenylpyrimidin-4(3H)-one1058484-30-2C21H20N4O4
- 3-(2,4-Dimethoxyphenyl)-5-[3-(4-ethoxyphenyl)-1H-pyrazol-5-yl]-1,2,4-oxadiazole1240109-77-6C21H20N4O4
- 4-{3-[(3,4-Dimethoxyphenyl)amino]imidazo[1,2-a]pyrazin-2-yl}-2-methoxyphenol879590-65-5C21H20N4O4
- 1-(2-Methyl-1H-indol-3-yl)-2-[4-(4-nitrophenyl)piperazin-1-yl]ethane-1,2-dione903296-28-6C21H20N4O4
- 2-(5-Furan-2-yl-4-phenylamino-pyrrolo[2,3-d]pyrimidin-7-yl)-5-methyl-tetrahydro-furan-3,4-diol291759-57-4C21H20N4O4
- Lenvatinib impurity g417714-14-8C21H20N4O4
- 6-(4-Methoxyphenyl)-3-(2,3,4-trimethoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazine1292284-35-5C21H20N4O4
- Ethyl 2-amino-1-(2,5-dimethoxyphenyl)pyrrolo[3,2-b]quinoxaline-3-carboxylate4622-69-9C21H20N4O4
- Ethyl 5-{2-[2-(allylamino)-2-oxoacetyl]-1H-pyrrol-1-yl}-1-phenyl-1H-pyrazole-4-carboxylate477709-22-1C21H20N4O4
- (E)-Methyl 4-((2-(3-(2-ethoxyphenyl)-1H-pyrazole-5-carbonyl)hydrazono)methyl)benzoate1285541-86-7C21H20N4O4
- 3a-Methyl-2-(3-nitrophenyl)-9-phenylhexahydro-1H-pyrazolo[1,2-a]pyrrolo[3,4-c]pyrazole-1,3(2H)-dione495384-36-6C21H20N4O4
- Prop-2-enyl 5-(4-cyanophenyl)-1,3,7-trimethyl-2,4-dioxo-5,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate622361-39-1C21H20N4O4
- 4,11-Diamino-2,3-dihydro-3-imino-2-(3-methoxybutyl)-1H-naphth(2,3-f)isoindole-1,5,10-trione55524-89-5C21H20N4O4
- Methyl 1-(carbamoylamino)-2-methyl-5-phenyl-4-(phenylcarbamoyl)pyrrole-3-carboxylate94126-62-2C21H20N4O4
- 1H-Naphth[2,3-f]isoindole-1,3,5,10(2H)-tetrone, 4,11-diamino-2-[3-(dimethylamino)propyl]-6647-34-3C21H20N4O4
- 1-(3-Nitro-2-oxo-1-phenyl-1,2-dihydroquinolin-4-yl)piperidine-4-carboxamide886159-11-1C21H20N4O4
- 2-(2-(4-Ethoxyphenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl)-N-(furan-2-ylmethyl)acetamide941938-61-0C21H20N4O4
- N-(Benzo[d][1,3]dioxol-5-ylmethyl)-2-(3-cyclopropyl-5-oxo-4-phenyl-4,5-dihydro-1H-1,2,4-triazol-1-yl)acetamide1396862-20-6C21H20N4O4
- Ethyl 4-({N-[(2-methyl-4-quinolyl)carbonylamino]carbamoyl}amino)benzoate701939-68-6C21H20N4O4
- N-(3,4-Dimethoxyphenyl)-1,9-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide864855-65-2C21H20N4O4
- 5-(Benzyloxy)-2-(4-(pyrimidin-2-yl)piperazine-1-carbonyl)-4H-pyran-4-one1021134-61-1C21H20N4O4
- 5-(4-(4-Ethoxybenzoyl)piperazin-1-yl)-2-(furan-2-yl)oxazole-4-carbonitrile946378-24-1C21H20N4O4
- N-(2-(2-Methoxyphenoxy)ethyl)-2-(4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)acetamide1207049-37-3C21H20N4O4
- 3-(3,4-Dimethoxyphenyl)-5-{[5-(3,4-dimethylphenyl)-1,3,4-oxadiazol-2-yl]methyl}-1,2,4-oxadiazole1251571-65-9C21H20N4O4
- Methyl 4-(4-(pyrazolo[1,5-a]pyridine-3-carbonyl)piperazine-1-carbonyl)benzoate1396680-20-8C21H20N4O4
- Ethyl 2-(2-(4-methyl-6-oxo-2-(pyridin-4-yl)pyrimidin-1(6H)-yl)acetamido)benzoate1421526-36-4C21H20N4O4
- 9-(3,4-Dimethoxyphenyl)-6-(furan-2-yl)-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8-ol894217-74-4C21H20N4O4
- Ethyl 2-amino-1-(3,4-dimethoxyphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate374616-32-7C21H20N4O4
- Ethyl 2-amino-1-(3,5-dimethoxyphenyl)-1H-pyrrolo(2,3-B)quinoxaline-3-carboxylate518335-02-9C21H20N4O4
- 1-(4-Benzylpiperazin-1-yl)-2-(5-nitro-1H-indol-3-yl)ethane-1,2-dione334973-49-8C21H20N4O4
- 3-(2,3-Dimethoxyphenyl)-5-{[5-(3,4-dimethylphenyl)-1,3,4-oxadiazol-2-yl]methyl}-1,2,4-oxadiazole1251606-63-9C21H20N4O4
- Methyl 2-{[(4-oxo-6,7,8,9-tetrahydropyrimido[4,5-b]quinolin-3(4H)-yl)acetyl]amino}benzoate1185142-43-1C21H20N4O4
- 2-[3-(2-Furyl)-6-oxo-1(6H)-pyridazinyl]-N-[2-(5-methoxy-1H-indol-1-yl)ethyl]acetamide1374539-11-3C21H20N4O4
- 2-[(3,4-Dimethyl-2-oxo-2H-chromen-7-yl)oxy]-N-(2-[1,2,4]triazolo[4,3-a]pyridin-3-ylethyl)acetamide1436005-02-5C21H20N4O4
- 2-(7-Methoxy-4-methyl-2-oxo-2H-chromen-3-yl)-N-(2-[1,2,4]triazolo[4,3-a]pyridin-3-ylethyl)acetamide1436002-63-9C21H20N4O4
- 3-(3,5-Dimethylisoxazol-4-yl)-N-(2-((3-(furan-2-yl)-1,2,4-oxadiazol-5-yl)methyl)phenyl)propanamide1797598-30-1C21H20N4O4
- N-(2-(3-Hydroxy-2-oxoquinoxalin-1(2H)-yl)ethyl)-5-methoxy-1-methyl-1H-indole-2-carboxamide1574480-76-4C21H20N4O4
- N-(2-(3-Hydroxy-2-oxoquinoxalin-1(2H)-yl)ethyl)-5-methoxy-3-methyl-1H-indole-2-carboxamide1574318-17-4C21H20N4O4
- 1-(Benzo[d][1,3]dioxol-5-ylmethyl)-3-(2-((3-cyclopropyl-1,2,4-oxadiazol-5-yl)methyl)phenyl)urea1797138-90-9C21H20N4O4
- 2-(1-(2-(4-Oxoquinazolin-3(4H)-yl)acetyl)azetidin-3-yl)-3a,4,7,7a-tetrahydro-1H-isoindole-1,3(2H)-dione2034492-14-1C21H20N4O4
- N-((1r,4r)-4-((3-Cyanopyrazin-2-yl)oxy)cyclohexyl)-7-methoxybenzofuran-2-carboxamide2034255-51-9C21H20N4O4
- Methyl 4-{3-[4-(phenoxymethyl)-1H-1,2,3-triazol-1-yl]azetidine-1-carbonyl}benzoate2034591-48-3C21H20N4O4
- Finerenone metabolite M22088051-07-2C21H20N4O4
- 5-({6-Benzyl-4-oxo-3H,4H,5H,6H,7H,8H-pyrido[4,3-d]pyrimidin-2-yl}amino)-2-hydroxybenzoic acid1417636-94-2C21H20N4O4
- Apixaban impurity 151466571-07-2C21H20N4O4
- 2-(2,3-Dimethoxyphenyl)-10-iminotetrahydro-8a,4-(epoxymethano)chromene-3,3,4(2H,4aH)-tricarbonitrile1005040-36-7C21H20N4O4
- (6-Methyl-3,4-dihydro-2H-quinolin-1-yl)-[1-[(2-nitrophenoxy)methyl]pyrazol-3-yl]methanone1005589-54-7C21H20N4O4
- N-[3-(Acetylamino)phenyl]-2-[3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide922862-25-7C21H20N4O4
- N-[4-(Acetylamino)phenyl]-2-[3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide922973-44-2C21H20N4O4
- N-[3-(Acetylamino)phenyl]-2-[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide922995-33-3C21H20N4O4
- N-[4-(Acetylamino)phenyl]-2-[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide922927-01-3C21H20N4O4
- 1-(Benzo[d][1,3]dioxol-5-yl)-3-(3-(6-oxo-3-phenylpyridazin-1(6H)-yl)propyl)urea1040671-34-8C21H20N4O4
- N-(4-Methoxyphenyl)-1-{[(2-methylphenyl)carbamoyl]methyl}-6-oxo-1,6-dihydropyridazine-3-carboxamide920248-59-5C21H20N4O4
- 7-Benzyl-N-(furan-2-ylmethyl)-1,3-dimethyl-2,4-dioxo-2,3,4,7-tetrahydro-1H-pyrrolo[2,3-d]pyrimidine-6-carboxamide1021258-80-9C21H20N4O4
- 5-(4-Acetylpiperazin-1-yl)-2-[5-(phenoxymethyl)furan-2-yl]-1,3-oxazole-4-carbonitrile946309-41-7C21H20N4O4
- 2-(1H-Indol-3-yl)-N-(1-methyl-2-oxo-5-(pyrrolidine-1-carbonyl)-1,2-dihydropyridin-3-yl)-2-oxoacetamide1207049-44-2C21H20N4O4
- N-(2,4-Dimethoxybenzyl)-2-(4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)acetamide1207056-64-1C21H20N4O4
- N-(2-(3-(3,4-Dimethoxyphenyl)ureido)phenyl)nicotinamide1207024-27-8C21H20N4O4
- N-(4-Acetamidophenyl)-4-methyl-1,5-dioxo-1,2,3,3a,4,5-hexahydropyrrolo[1,2-a]quinazoline-3a-carboxamide1236257-40-1C21H20N4O4
- 3-Isopropyl-1-((3-(4-methoxyphenyl)-1,2,4-oxadiazol-5-yl)methyl)quinazoline-2,4(1H,3H)-dione1251678-99-5C21H20N4O4
- (4-(Benzo[d][1,3]dioxol-5-ylamino)-7-methyl-1,8-naphthyridin-3-yl)(morpholino)methanone1251564-36-9C21H20N4O4
- 2-(1H-Indol-1-yl)-N-((3-((4-methoxyphenoxy)methyl)-1,2,4-oxadiazol-5-yl)methyl)acetamide1226443-35-1C21H20N4O4
- 2-[3-(Furan-2-yl)-6-oxopyridazin-1(6H)-yl]-N-[2-(5-methoxy-1H-indol-3-yl)ethyl]acetamide1324061-89-3C21H20N4O4
- 2-[(4-Methyl-2-oxo-2H-chromen-7-yl)oxy]-N-[3-([1,2,4]triazolo[4,3-a]pyridin-3-yl)propyl]acetamide1374543-80-2C21H20N4O4
- N-[3-(2-Methoxyethyl)-4-oxo-3,4-dihydroquinazolin-6-yl]-2-(3-oxo-2,3-dihydro-1H-isoindol-1-yl)acetamide1574324-55-2C21H20N4O4
- 3-(5,7-Dioxo-5,7-dihydro-6H-pyrrolo[3,4-b]pyridin-6-yl)-N-[2-(5-methoxy-1H-indol-3-yl)ethyl]propanamide1435989-00-6C21H20N4O4
- N1-(benzo[d][1,3]dioxol-5-yl)-N2-(3-(2-phenyl-1H-imidazol-1-yl)propyl)oxalamide1421482-00-9C21H20N4O4
- N-(1-(3-(Pyridin-3-yl)-1,2,4-oxadiazol-5-yl)cyclohexyl)benzo[d][1,3]dioxole-5-carboxamide1396679-55-2C21H20N4O4
- 2-(3-Cyclopropyl-5-oxo-4-phenyl-4,5-dihydro-1H-1,2,4-triazol-1-yl)-N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)acetamide1396683-11-6C21H20N4O4
- N-(1-((5-Phenyl-1,2,4-oxadiazol-3-yl)methyl)pyrrolidin-3-yl)benzo[d][1,3]dioxole-5-carboxamide1396632-13-5C21H20N4O4
- 3-(2,5-Dimethoxyphenyl)-1-methyl-N-(2-oxoindolin-5-yl)-1H-pyrazole-5-carboxamide1396750-02-9C21H20N4O4
- 3-(1-(2-(Benzo[d][1,3]dioxol-5-yl)acetyl)piperidin-4-yl)pyrido[2,3-d]pyrimidin-4(3H)-one2034224-59-2C21H20N4O4
- N-(2-Methoxyphenyl)-3-(4-methoxyphenyl)-5-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine-7-carboxamide1170603-51-6C21H20N4O4
- Chalcones A-N-52756846-09-8C21H20N4O4
- 5-(3-(5-Cyano-1-ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-3-pyridyl)allylidene)-1-ethyl-1,2,5,6-tetrahydro-4-methylnicotinonitrile28172-08-9C21H20N4O4
Frequently asked questions
What is the molar mass of C21H20N4O4?
The molar mass of C21H20N4O4 is 392.42 g/mol, calculated from standard atomic weights for 21 carbon atoms, 20 hydrogen atoms, 4 nitrogen atoms and 4 oxygen atoms. The monoisotopic mass is 392.1485 Da.
How many compounds have the formula C21H20N4O4?
CompoundList lists 205 compounds with the molecular formula C21H20N4O4, including (E)-2-Cyano-N-(2-methoxyphenyl)-3-(5-nitro-2-pyrrolidin-1-ylphenyl)prop-2-enamide, (5-Methyl-3-phenyl-1,2-oxazol-4-yl)-[4-(4-nitrophenyl)piperazin-1-yl]methanone, Thaxtomin C. 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 C21H20N4O4?
C21H20N4O4 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.