Molecular formula
C21H20N4O5
58 compounds have this formula on CompoundList.
- Molar mass
- 408.41g/mol
- Monoisotopic mass
- 408.1434Da
- Atoms
- 50
- Elements
- 4
- Rings plus double bonds
- 14
The formula C21H20N4O5 describes a molecule made of 21 carbon atoms, 20 hydrogen atoms, 4 nitrogen atoms and 5 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 × 2161.76%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 204.94%1.008 × 20 = 20.160 g/mol
- N Nitrogen × 413.72%14.007 × 4 = 56.028 g/mol
- O Oxygen × 519.59%15.999 × 5 = 79.995 g/mol
Look up another formula
Compounds with the formula C21H20N4O5
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 58 of 58 compounds
![2-[4-(3-Nitrophenyl)-1-oxophthalazin-2-yl]-N-(oxolan-2-ylmethyl)acetamide chemical structure, C21H20N4O5, CAS 701238-33-7](/s/WQOQJXYZMCEQFL-UHFFFAOYSA-N.svg)
2-[4-(3-Nitrophenyl)-1-oxophthalazin-2-yl]-N-(oxolan-2-ylmethyl)acetamide
CAS 701238-33-7C21H20N4O5
![[2-(4-Carbamoylanilino)-2-oxoethyl] 4-oxo-3-propylphthalazine-1-carboxylate chemical structure, C21H20N4O5, CAS 743453-93-2](/s/YKXXIZKRXPZDNQ-UHFFFAOYSA-N.svg)
[2-(4-Carbamoylanilino)-2-oxoethyl] 4-oxo-3-propylphthalazine-1-carboxylate
CAS 743453-93-2C21H20N4O5
![2-(3,4-Dimethoxyphenyl)-5-[4-(furan-2-carbonyl)piperazin-1-yl]-1,3-oxazole-4-carbonitrile chemical structure, C21H20N4O5, CAS 903196-85-0](/s/LEWLJCMWDNUGDK-UHFFFAOYSA-N.svg)
2-(3,4-Dimethoxyphenyl)-5-[4-(furan-2-carbonyl)piperazin-1-yl]-1,3-oxazole-4-carbonitrile
CAS 903196-85-0C21H20N4O5
![2-(2',5'-Dioxospiro[2,3-dihydro-1H-naphthalene-4,4'-imidazolidine]-1'-yl)-N-(4-methyl-2-nitrophenyl)acetamide chemical structure, C21H20N4O5, CAS 1009521-75-8](/s/VPTYPBADHJDSGW-UHFFFAOYSA-N.svg)
2-(2',5'-Dioxospiro[2,3-dihydro-1H-naphthalene-4,4'-imidazolidine]-1'-yl)-N-(4-methyl-2-nitrophenyl)acetamide
CAS 1009521-75-8C21H20N4O5
3,4-Dimethoxy-N-(2-oxo-2-(2-((2-oxo-1,2-dihydro-3-quinolinyl)methylene)hydrazino)ethyl)benzamide
CAS 881659-45-6C21H20N4O5
![9-(4-Methoxyphenyl)-2-(4-nitrophenyl)hexahydro-1H-pyrazolo[1,2-a]pyrrolo[3,4-c]pyrazole-1,3(2H)-dione chemical structure, C21H20N4O5, CAS 299922-68-2](/s/HNHULONBMOKPMS-UHFFFAOYSA-N.svg)
9-(4-Methoxyphenyl)-2-(4-nitrophenyl)hexahydro-1H-pyrazolo[1,2-a]pyrrolo[3,4-c]pyrazole-1,3(2H)-dione
CAS 299922-68-2C21H20N4O5
![3-{2-[3-(4-Ethoxy-3-methoxyphenyl)-1,2,4-oxadiazol-5-yl]ethyl}-1,2,3,4-tetrahydroquinazoline-2,4-dione chemical structure, C21H20N4O5, CAS 1031578-82-1](/s/WSINOBZISZKILY-UHFFFAOYSA-N.svg)
3-{2-[3-(4-Ethoxy-3-methoxyphenyl)-1,2,4-oxadiazol-5-yl]ethyl}-1,2,3,4-tetrahydroquinazoline-2,4-dione
CAS 1031578-82-1C21H20N4O5
![N-(1,3-Benzodioxol-5-ylmethyl)-N'-{2-[(1H-indol-2-ylcarbonyl)amino]ethyl}ethanediamide chemical structure, C21H20N4O5, CAS 1081140-37-5](/s/UDYYEBXOODKURJ-UHFFFAOYSA-N.svg)
N-(1,3-Benzodioxol-5-ylmethyl)-N'-{2-[(1H-indol-2-ylcarbonyl)amino]ethyl}ethanediamide
CAS 1081140-37-5C21H20N4O5
![(5Z)-5-[4-(Dimethylamino)-3-nitrobenzylidene]-3-(3,4-dimethylphenyl)-6-hydroxypyrimidine-2,4(3H,5H)-dione chemical structure, C21H20N4O5, CAS 6413-00-9](/s/HTUNCSSHDASLQP-YBEGLDIGSA-N.svg)
(5Z)-5-[4-(Dimethylamino)-3-nitrobenzylidene]-3-(3,4-dimethylphenyl)-6-hydroxypyrimidine-2,4(3H,5H)-dione
CAS 6413-00-9C21H20N4O5
(E)-Methyl 4-((2-(3-(3,4-dimethoxyphenyl)-1H-pyrazole-5-carbonyl)hydrazono)methyl)benzoate
CAS 1284276-31-8C21H20N4O5
![3-(3,4-Dimethoxyphenyl)-5-[3-(2,4-dimethoxyphenyl)-1H-pyrazol-5-yl]-1,2,4-oxadiazole chemical structure, C21H20N4O5, CAS 1094607-02-9](/s/CFWXTMVGXIAIGR-UHFFFAOYSA-N.svg)
3-(3,4-Dimethoxyphenyl)-5-[3-(2,4-dimethoxyphenyl)-1H-pyrazol-5-yl]-1,2,4-oxadiazole
CAS 1094607-02-9C21H20N4O5
![Ethyl (5E)-5-[2-(2,3-dihydro-1,4-benzodioxin-6-yl)hydrazinylidene]-1-(4-methylphenyl)-4-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate chemical structure, C21H20N4O5, CAS 379245-17-7](/s/JYVLWCIVYCVOKQ-UHFFFAOYSA-N.svg)
Ethyl (5E)-5-[2-(2,3-dihydro-1,4-benzodioxin-6-yl)hydrazinylidene]-1-(4-methylphenyl)-4-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate
CAS 379245-17-7C21H20N4O5
![Ethyl 3-({N-[(4-hydroxyphthalazin-1-yl)acetyl]glycyl}amino)benzoate chemical structure, C21H20N4O5, CAS 929971-74-4](/s/JLJFBUKCNQAODL-UHFFFAOYSA-N.svg)
Ethyl 3-({N-[(4-hydroxyphthalazin-1-yl)acetyl]glycyl}amino)benzoate
CAS 929971-74-4C21H20N4O5
![2-[(2-Hydroxy-3,4-dihydroquinolin-7-yl)oxy]-N-[2-(3-hydroxy-2-oxoquinoxalin-1(2H)-yl)ethyl]acetamide chemical structure, C21H20N4O5, CAS 1630836-51-9](/s/WBOIGCSOFXVWQS-UHFFFAOYSA-N.svg)
2-[(2-Hydroxy-3,4-dihydroquinolin-7-yl)oxy]-N-[2-(3-hydroxy-2-oxoquinoxalin-1(2H)-yl)ethyl]acetamide
CAS 1630836-51-9C21H20N4O5
![Ethyl 4-[[4-(ethoxycarbonyl)phenyl]azo]-4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylate chemical structure, C21H20N4O5, CAS 2008-84-6](/s/FKFWUHISCWCMPI-UHFFFAOYSA-N.svg)
Ethyl 4-[[4-(ethoxycarbonyl)phenyl]azo]-4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylate
CAS 2008-84-6C21H20N4O5
![4-[3-(4-Methoxy-3-nitrophenyl)-1-phenyl-1H-pyrazole-4-carbonyl]morpholine chemical structure, C21H20N4O5, CAS 882226-29-1](/s/YQBXQKGCUHPIHW-UHFFFAOYSA-N.svg)
4-[3-(4-Methoxy-3-nitrophenyl)-1-phenyl-1H-pyrazole-4-carbonyl]morpholine
CAS 882226-29-1C21H20N4O5
![2-(2-(3,4-Dimethoxyphenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl)-N-(furan-2-ylmethyl)acetamide chemical structure, C21H20N4O5, CAS 941982-12-3](/s/VRHIFBFPYCNDAS-UHFFFAOYSA-N.svg)
2-(2-(3,4-Dimethoxyphenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl)-N-(furan-2-ylmethyl)acetamide
CAS 941982-12-3C21H20N4O5
![N-(Benzo[d][1,3]dioxol-5-yl)-3-(3-(2-methoxybenzyl)-1,2,4-oxadiazol-5-yl)azetidine-1-carboxamide chemical structure, C21H20N4O5, CAS 1396810-34-6](/s/JLLPBLPWUOUGJK-UHFFFAOYSA-N.svg)
N-(Benzo[d][1,3]dioxol-5-yl)-3-(3-(2-methoxybenzyl)-1,2,4-oxadiazol-5-yl)azetidine-1-carboxamide
CAS 1396810-34-6C21H20N4O5
![6-[4-(Furan-2-carbonyl)piperazine-1-carbonyl]-5-methoxy-2-phenylpyridazin-3-one chemical structure, C21H20N4O5, CAS 921883-27-4](/s/RYDNRSBPFXCBGR-UHFFFAOYSA-N.svg)
6-[4-(Furan-2-carbonyl)piperazine-1-carbonyl]-5-methoxy-2-phenylpyridazin-3-one
CAS 921883-27-4C21H20N4O5
5-(4-(3,4-Dimethoxybenzoyl)piperazin-1-yl)-2-(furan-2-yl)oxazole-4-carbonitrile
CAS 941968-39-4C21H20N4O5
![1-{[(3,4-Dimethoxyphenyl)carbamoyl]methyl}-6-oxo-N-phenyl-1,6-dihydropyridazine-3-carboxamide chemical structure, C21H20N4O5, CAS 946287-38-3](/s/WICMCXWBBQCWKV-UHFFFAOYSA-N.svg)
1-{[(3,4-Dimethoxyphenyl)carbamoyl]methyl}-6-oxo-N-phenyl-1,6-dihydropyridazine-3-carboxamide
CAS 946287-38-3C21H20N4O5
![N-(2H-1,3-Benzodioxol-5-yl)-2-[4-(morpholin-4-yl)-1-oxo-1,2-dihydrophthalazin-2-yl]acetamide chemical structure, C21H20N4O5, CAS 1251694-86-6](/s/HVWDOCROZKUSCX-UHFFFAOYSA-N.svg)
N-(2H-1,3-Benzodioxol-5-yl)-2-[4-(morpholin-4-yl)-1-oxo-1,2-dihydrophthalazin-2-yl]acetamide
CAS 1251694-86-6C21H20N4O5
N-(2-(3-Hydroxy-2-oxoquinoxalin-1(2H)-yl)ethyl)-5,6-dimethoxy-1H-indole-2-carboxamide
CAS 1574472-54-0C21H20N4O5
![N-(4-Methoxyphenyl)-1-{[(3-methoxyphenyl)carbamoyl]methyl}-6-oxo-1,6-dihydropyridazine-3-carboxamide chemical structure, C21H20N4O5, CAS 920366-97-8](/s/YXIOTVIDYQATJD-UHFFFAOYSA-N.svg)
N-(4-Methoxyphenyl)-1-{[(3-methoxyphenyl)carbamoyl]methyl}-6-oxo-1,6-dihydropyridazine-3-carboxamide
CAS 920366-97-8C21H20N4O5
- N-(4-Methoxyphenyl)-1-(2-((2-methoxyphenyl)amino)-2-oxoethyl)-6-oxo-1,6-dihydropyridazine-3-carboxamide920248-71-1C21H20N4O5
- 2-(1H-Indol-3-yl)-N-(1-methyl-5-(morpholine-4-carbonyl)-2-oxo-1,2-dihydropyridin-3-yl)-2-oxoacetamide1207037-13-5C21H20N4O5
- 1-((3-(3,4-Dimethoxyphenyl)-1,2,4-oxadiazol-5-yl)methyl)-3-ethylquinazoline-2,4(1H,3H)-dione1207035-72-0C21H20N4O5
- 1-((3-(3,5-Dimethoxyphenyl)-1,2,4-oxadiazol-5-yl)methyl)-3-ethylquinazoline-2,4(1H,3H)-dione1207019-80-4C21H20N4O5
- 4-({[3-(3,4-Dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)benzamide1210690-69-9C21H20N4O5
- (3-(5-(Benzo[d][1,3]dioxol-5-yl)-1,3,4-oxadiazol-2-yl)piperidin-1-yl)(2-methoxypyridin-3-yl)methanone1219914-00-7C21H20N4O5
- N-(4-((Benzo[d][1,3]dioxol-5-ylmethyl)carbamoyl)phenyl)-3-methoxy-1-methyl-1H-pyrazole-4-carboxamide1351644-98-8C21H20N4O5
- Methyl 2-(4-(2,4-dioxo-1,2-dihydropyrido[2,3-d]pyrimidin-3(4H)-yl)piperidine-1-carbonyl)benzoate2034425-79-9C21H20N4O5
- Ethyl N-[4-(benzhydrylamino)-5-nitro-6-oxo-1H-pyridin-2-yl]carbamate6502-03-0C21H20N4O5
- 6-(4-Ethoxyphenyl)-1-methyl-4-(3-nitrophenyl)-4,7-dihydro-3H-pyrrolo[3,4-d]pyrimidine-2,5-dione879461-71-9C21H20N4O5
- N'-[1-(Cyclopropanecarbonyl)-3,4-dihydro-2H-quinolin-7-yl]-N-(3-nitrophenyl)oxamide898413-62-2C21H20N4O5
- 8-(4-Methoxyphenyl)-2-(2-(4-methoxyphenyl)-2-oxoethyl)-7,8-dihydroimidazo[2,1-c][1,2,4]triazine-3,4(2H,6H)-dione941935-90-6C21H20N4O5
- Methyl 2-[({2-[(3,5-dimethyl-4-nitro-1H-pyrazol-1-yl)methyl]phenyl}carbonyl)amino]benzoate1005664-20-9C21H20N4O5
- 2-(7,8-Dimethoxy-4-methyl-2-oxo-2H-chromen-3-yl)-N-([1,2,4]triazolo[4,3-a]pyridin-3-ylmethyl)acetamide1374525-16-2C21H20N4O5
- 1-(Benzo[d][1,3]dioxol-5-ylmethyl)-3-(1-((2,3-dihydrobenzo[b][1,4]dioxin-2-yl)methyl)-1H-pyrazol-4-yl)urea1797336-92-5C21H20N4O5
- N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-N'-{2-[(1H-indol-2-ylcarbonyl)amino]ethyl}ethanediamide1081146-79-3C21H20N4O5
- [2-Methoxy-4-[[[3-(4-methoxyphenyl)-1H-pyrazole-5-carbonyl]hydrazinylidene]methyl]phenyl] acetate5307-16-4C21H20N4O5
- 2-((6-Amino-3-methyl-2,4-dioxo-1-phenyl-1,2,3,4-tetrahydropyrimidin-5-yl)carbamoyl)-6-methylphenyl acetate301206-05-3C21H20N4O5
- 5-((6-Amino-3-methyl-2,4-dioxo-1-phenyl-1,2,3,4-tetrahydropyrimidin-5-yl)carbamoyl)-2-methylphenyl acetate301206-04-2C21H20N4O5
- 3-((6-Amino-3-methyl-2,4-dioxo-1-phenyl-1,2,3,4-tetrahydropyrimidin-5-yl)carbamoyl)-2-methylphenyl acetate301206-03-1C21H20N4O5
- 4-((6-Amino-3-methyl-2,4-dioxo-1-phenyl-1,2,3,4-tetrahydropyrimidin-5-yl)carbamoyl)-2-methylphenyl acetate301206-02-0C21H20N4O5
- Acetic acid, (4-((1,5-dihydro-3-methyl-5-oxo-4H-pyrazol-4-ylidene)methyl)phenoxy)-, ((4-hydroxy-3-methoxyphenyl)methylene)hydrazide107044-96-2C21H20N4O5
- 1-{4-[4-(2-Methoxypyridin-4-yl)-3-oxopiperazine-1-carbonyl]phenyl}pyrrolidine-2,5-dione2380096-05-7C21H20N4O5
- N-[(2H-1,3-Benzodioxol-5-yl)methyl]-N'-{2-hydroxy-2-[4-(1H-pyrazol-1-yl)phenyl]ethyl}ethanediamide2415530-81-1C21H20N4O5
- (S)-N-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-2-(2-(4-oxo-3,4-dihydrophthalazin-1-yl)acetamido)propanamide1177104-83-4C21H20N4O5
- 1-(Ethoxymethyl)-5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1H-1,2,3-triazole-4-carboxylic acid2243515-50-4C21H20N4O5
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 4-oxo-4-[4-(pyridin-2-yl)piperazin-1-yl]butanoate2248368-69-4C21H20N4O5
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3-{3-methoxy-1,4,6-trimethyl-1H-pyrazolo[3,4-b]pyridin-5-yl}propanoate2248278-77-3C21H20N4O5
- rac-1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl (2R,3R)-1-cyclopropyl-2-(1-methyl-1H-imidazol-5-yl)-6-oxopiperidine-3-carboxylate2248399-63-3C21H20N4O5
- rac-1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl (2R,3R)-1-cyclopropyl-2-(1,5-dimethyl-1H-pyrazol-4-yl)-5-oxopyrrolidine-3-carboxylate2248335-49-9C21H20N4O5
- rac-1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl (2R,3R)-1-cyclopropyl-2-(1-methyl-1H-imidazol-2-yl)-6-oxopiperidine-3-carboxylate2248294-21-3C21H20N4O5
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 1-cyclopropyl-2-(1-methyl-1H-pyrazol-5-yl)-6-oxopiperidine-3-carboxylate2248297-63-2C21H20N4O5
- 5-{[2-(2-Aminophenoxy)ethyl]amino}-2-(2,6-dioxopiperidin-3-yl)-2,3-dihydro-1H-isoindole-1,3-dione2703764-94-5C21H20N4O5
- (9H-Fluoren-9-yl)methyl N-[1-(2-hydroxyethyl)-3-methyl-4-nitro-1H-pyrazol-5-yl]carbamate2764020-14-4C21H20N4O5
Frequently asked questions
What is the molar mass of C21H20N4O5?
The molar mass of C21H20N4O5 is 408.41 g/mol, calculated from standard atomic weights for 21 carbon atoms, 20 hydrogen atoms, 4 nitrogen atoms and 5 oxygen atoms. The monoisotopic mass is 408.1434 Da.
How many compounds have the formula C21H20N4O5?
CompoundList lists 58 compounds with the molecular formula C21H20N4O5, including 2-[4-(3-Nitrophenyl)-1-oxophthalazin-2-yl]-N-(oxolan-2-ylmethyl)acetamide, [2-(4-Carbamoylanilino)-2-oxoethyl] 4-oxo-3-propylphthalazine-1-carboxylate, 2-(3,4-Dimethoxyphenyl)-5-[4-(furan-2-carbonyl)piperazin-1-yl]-1,3-oxazole-4-carbonitrile. 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 C21H20N4O5?
C21H20N4O5 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.