Molecular formula
C21H21N3O4
349 compounds have this formula on CompoundList.
- Molar mass
- 379.42g/mol
- Monoisotopic mass
- 383.1783Da
- Atoms
- 49
- Elements
- 4
- Rings plus double bonds
- 13
The formula C21H21N3O4 describes a molecule made of 21 carbon atoms, 21 hydrogen atoms, 3 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 × 2166.48%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 215.58%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 311.08%14.007 × 3 = 42.021 g/mol
- O Oxygen × 416.87%15.999 × 4 = 63.996 g/mol
Look up another formula
Compounds with the formula C21H21N3O4
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 301 to 349 of 349 compounds
![4-[1-[4-(Methoxymethyl)-3-nitrobenzoyl]piperidin-4-yl]benzonitrile chemical structure, C21H21N3O4, CAS 1034470-24-0](/s/CUYJJUHWVWMNMJ-UHFFFAOYSA-N.svg)
4-[1-[4-(Methoxymethyl)-3-nitrobenzoyl]piperidin-4-yl]benzonitrile
CAS 1034470-24-0C21H21N3O4
tert-Butyl methyl(4-(4-nitroquinolin-2-yl)phenyl)carbamate
CAS 1246093-98-0C21H21N3O4
tert-Butyl 2-(4-(6-hydroxyquinolin-2-yl)benzoyl)hydrazinecarboxylate
CAS 1371588-40-7C21H21N3O4
1-Piperidineacetamide,N-(2,3-dihydro-2-oxo-5-benzoxazolyl)-a-oxo-4-(phenylmethyl)-
CAS 496058-11-8C21H21N3O4
Benzyl 4-(2,4-dioxo-1,2-dihydroquinazolin-3(4H)-yl)piperidine-1-carboxylate
CAS 1903842-67-0C21H21N3O4
3-(2-Methoxyethyl)-7-(1,2,3,4-tetrahydroisoquinoline-2-carbonyl)quinazoline-2,4(1H,3H)-dione
CAS 2034455-30-4C21H21N3O4
3-(4-((Benzyloxy)carbonyl)piperazin-1-yl)indolizine-6-carboxylic acid
CAS 2177263-26-0C21H21N3O4
![2-{[1-(2,3-Dimethoxybenzoyl)pyrrolidin-3-yl]oxy}quinoxaline chemical structure, C21H21N3O4, CAS 2097869-15-1](/s/ZCQWRRFRJCYRIZ-UHFFFAOYSA-N.svg)
2-{[1-(2,3-Dimethoxybenzoyl)pyrrolidin-3-yl]oxy}quinoxaline
CAS 2097869-15-1C21H21N3O4
![2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-4-(3-methyl-3H-diazirin-3-yl)butanoic acid chemical structure, C21H21N3O4, CAS 2386190-28-7](/s/QKMQUEIDJLPYHS-UHFFFAOYSA-N.svg)
2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-4-(3-methyl-3H-diazirin-3-yl)butanoic acid
CAS 2386190-28-7C21H21N3O4
Acetamide, N-(4-(1-(3,6-dihydro-3-methyl-2,6-dioxo-1(2H)-pyrimidinyl)-2-hydroxy-2-phenylethyl)phenyl)-
CAS 66648-72-4C21H21N3O4
4-(2-((6-(4-Methoxyphenoxy)pyrimidin-4-yl)(methyl)amino)ethoxy)benzaldehyde
CAS 607723-87-5C21H21N3O4
N-(5-(2,5-Dimethoxyphenyl)-1,3,4-oxadiazol-2-yl)-5,6,7,8-tetrahydronaphthalene-2-carboxamide
CAS 952891-13-3C21H21N3O4
![3-Cyclohexene-1-carboxylic acid, 6-[[[2-methoxy-4-(2-phenyldiazenyl)phenyl]amino]carbonyl]- chemical structure, C21H21N3O4, CAS 882345-23-5](/s/SNPOOPZVYCTBAY-UHFFFAOYSA-N.svg)
3-Cyclohexene-1-carboxylic acid, 6-[[[2-methoxy-4-(2-phenyldiazenyl)phenyl]amino]carbonyl]-
CAS 882345-23-5C21H21N3O4
5-((3-Methoxybenzyl)oxy)-1-methyl-4-oxo-N-(pyridin-2-ylmethyl)-1,4-dihydropyridine-2-carboxamide
CAS 1021249-87-5C21H21N3O4
![4-[5-(2,4-Dimethoxyphenyl)-1,2,4-oxadiazol-3-yl]-1-(3-methylphenyl)-2-pyrrolidinone chemical structure, C21H21N3O4, CAS 1172325-09-5](/s/OLXSHHNEIIGAJX-UHFFFAOYSA-N.svg)
4-[5-(2,4-Dimethoxyphenyl)-1,2,4-oxadiazol-3-yl]-1-(3-methylphenyl)-2-pyrrolidinone
CAS 1172325-09-5C21H21N3O4
t-Butyl 4-(6-(methylcarbamoyl)-2-naphthoyl)-1H-imidazole-1-carboxylate
CAS 1416216-55-1C21H21N3O4
![2-Cyano-3-(3-methoxy-4-{[(4-methylphenyl)carbamoyl]methoxy}phenyl)-N-methylprop-2-enamide chemical structure, C21H21N3O4, CAS 733800-59-4](/s/ICNIMSYMOBNKQA-YBEGLDIGSA-N.svg)
2-Cyano-3-(3-methoxy-4-{[(4-methylphenyl)carbamoyl]methoxy}phenyl)-N-methylprop-2-enamide
CAS 733800-59-4C21H21N3O4
![Ethyl (4Z)-2-anilino-4-[(2-phenylacetyl)hydrazinylidene]furan-3-carboxylate chemical structure, C21H21N3O4, CAS 907556-79-0](/s/KIGJRDRBHQFHRV-HAVVHWLPSA-N.svg)
Ethyl (4Z)-2-anilino-4-[(2-phenylacetyl)hydrazinylidene]furan-3-carboxylate
CAS 907556-79-0C21H21N3O4
![2-[1-(2,5-Dimethylfuran-3-carbonyl)azetidin-3-yl]-6-(2-methoxyphenyl)-2,3-dihydropyridazin-3-one chemical structure, C21H21N3O4, CAS 2380086-03-1](/s/SVLODWXPRKKYOJ-UHFFFAOYSA-N.svg)
2-[1-(2,5-Dimethylfuran-3-carbonyl)azetidin-3-yl]-6-(2-methoxyphenyl)-2,3-dihydropyridazin-3-one
CAS 2380086-03-1C21H21N3O4
![3-(4-{[(tert-Butoxy)carbonyl]amino}phenyl)-1-phenyl-1H-pyrazole-4-carboxylic acid chemical structure, C21H21N3O4, CAS 2445837-47-6](/s/CKMDDWIBFIPTLV-UHFFFAOYSA-N.svg)
3-(4-{[(tert-Butoxy)carbonyl]amino}phenyl)-1-phenyl-1H-pyrazole-4-carboxylic acid
CAS 2445837-47-6C21H21N3O4
![4-{[1-(1-Benzofuran-2-carbonyl)piperidin-4-yl]methoxy}pyridine-2-carboxamide chemical structure, C21H21N3O4, CAS 2877638-39-4](/s/OZQJWIMOPYOLIB-UHFFFAOYSA-N.svg)
4-{[1-(1-Benzofuran-2-carbonyl)piperidin-4-yl]methoxy}pyridine-2-carboxamide
CAS 2877638-39-4C21H21N3O4
Ethyl 4-(4-cyano-2-methoxyphenyl)-1,4,5,6-tetrahydro-2,8-dimethyl-5-oxo-1,6-naphthyridine-3-carboxylate
CAS 2764833-06-7C21H21N3O4
![5-[1-(4-Methoxybenzoyl)pyrrolidin-2-yl]-3-(4-methoxyphenyl)-1,2,4-oxadiazole chemical structure, C21H21N3O4, CAS 861707-57-5](/s/OXHKAUUAKMKTQU-UHFFFAOYSA-N.svg)
5-[1-(4-Methoxybenzoyl)pyrrolidin-2-yl]-3-(4-methoxyphenyl)-1,2,4-oxadiazole
CAS 861707-57-5C21H21N3O4
![5-[1-(3,5-Dimethoxybenzoyl)pyrrolidin-2-yl]-3-phenyl-1,2,4-oxadiazole chemical structure, C21H21N3O4, CAS 856140-94-8](/s/DDMXNFZJCUGKIJ-UHFFFAOYSA-N.svg)
5-[1-(3,5-Dimethoxybenzoyl)pyrrolidin-2-yl]-3-phenyl-1,2,4-oxadiazole
CAS 856140-94-8C21H21N3O4
- 2-[4-(3,4-Dimethylphenyl)-2,3-dioxo-1,2,3,4-tetrahydropyrazin-1-yl]-N-(2-methoxyphenyl)acetamide904524-91-0C21H21N3O4
- N-(2,5-Dimethylphenyl)-2-[4-(3-methoxyphenyl)-2,3-dioxo-1,2,3,4-tetrahydropyrazin-1-yl]acetamide891867-90-6C21H21N3O4
- 5-[1-(3,4-Dimethoxybenzoyl)pyrrolidin-2-yl]-3-phenyl-1,2,4-oxadiazole1795393-61-1C21H21N3O4
- 5-{1-[(4-Methoxyphenoxy)acetyl]pyrrolidin-2-yl}-3-phenyl-1,2,4-oxadiazole1788754-03-9C21H21N3O4
- 5-(1-Benzoylpyrrolidin-2-yl)-3-(3,4-dimethoxyphenyl)-1,2,4-oxadiazole1795467-66-1C21H21N3O4
- Benzyl (5'-(2-hydroxypropan-2-yl)-2-oxo-2H-[1,2'-bipyridin]-3-yl)carbamate1797436-66-8C21H21N3O4
- 7-(3,4,5-Trimethoxybenzoyl)-6H,7H,8H,9H-pyrido[2,3-b]1,6-naphthyridine2742033-91-4C21H21N3O4
- 7-(2,3,4-Trimethoxybenzoyl)-6H,7H,8H,9H-pyrido[2,3-b]1,6-naphthyridine2770631-75-7C21H21N3O4
- 3-(1-Benzyl-1H-pyrazol-4-yl)-3-{[(benzyloxy)carbonyl]amino}propanoic acid1994055-48-9C21H21N3O4
- (3S)-3-(1-Benzyl-1H-pyrazol-4-yl)-3-{[(benzyloxy)carbonyl]amino}propanoic acid1992794-09-8C21H21N3O4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 4-[(4-methylpiperazin-1-yl)methyl]benzoate2248331-90-8C21H21N3O4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3-[(4-methylpiperazin-1-yl)methyl]benzoate2248278-08-0C21H21N3O4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 2-(4-methylpiperazin-1-yl)-2-phenylacetate2248257-62-5C21H21N3O4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3-(4-phenylpiperazin-1-yl)propanoate2248302-62-5C21H21N3O4
- 2-[(4-{[(Benzyloxy)carbonyl]amino}-3,5-dimethyl-1H-pyrazol-1-yl)methyl]benzoic acid2639433-80-8C21H21N3O4
- 4-[(4-{[(Benzyloxy)carbonyl]amino}-3,5-dimethyl-1H-pyrazol-1-yl)methyl]benzoic acid2639441-78-2C21H21N3O4
- 3-[(4-{[(Benzyloxy)carbonyl]amino}-3,5-dimethyl-1H-pyrazol-1-yl)methyl]benzoic acid2639458-98-1C21H21N3O4
- 4-{[(Benzyloxy)carbonyl][(1,5-dimethyl-1H-pyrazol-4-yl)methyl]amino}benzoic acid2680668-15-7C21H21N3O4
- 4-{[(Benzyloxy)carbonyl][(1-ethyl-1H-pyrazol-4-yl)methyl]amino}benzoic acid2680867-67-6C21H21N3O4
- 3-{[(Benzyloxy)carbonyl][(4-methyl-1H-imidazol-5-yl)methyl]amino}-4-methylbenzoic acid2680693-09-6C21H21N3O4
- Benzyl N-(2-methylpropyl)-N-(3-nitroquinolin-4-yl)carbamate2680753-05-1C21H21N3O4
- 2-{[(Benzyloxy)carbonyl]amino}-2-(3,5-dimethyl-1-phenyl-1H-pyrazol-4-yl)acetic acid2680544-65-2C21H21N3O4
- 2-{Benzyl[(benzyloxy)carbonyl]amino}-2-(1-methyl-1H-pyrazol-5-yl)acetic acid2680550-01-8C21H21N3O4
- (3R)-3-(1-Benzyl-1H-pyrazol-4-yl)-3-{[(benzyloxy)carbonyl]amino}propanoic acid2015433-38-0C21H21N3O4
- 2-(2,6-Dioxo-3-piperidyl)-7-(7-hydroxyhept-1-ynyl)-3-oxo-isoindoline-5-carbonitrile2619512-71-7C21H21N3O4
Frequently asked questions
What is the molar mass of C21H21N3O4?
The molar mass of C21H21N3O4 is 379.42 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms and 4 oxygen atoms. The monoisotopic mass is 383.1783 Da.
How many compounds have the formula C21H21N3O4?
CompoundList lists 349 compounds with the molecular formula C21H21N3O4, including 4-[1-[4-(Methoxymethyl)-3-nitrobenzoyl]piperidin-4-yl]benzonitrile, tert-Butyl methyl(4-(4-nitroquinolin-2-yl)phenyl)carbamate, tert-Butyl 2-(4-(6-hydroxyquinolin-2-yl)benzoyl)hydrazinecarboxylate. 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 C21H21N3O4?
C21H21N3O4 has a degree of unsaturation of 13. 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.