Molecular formula
C21H21NO4
403 compounds have this formula on CompoundList.
- Molar mass
- 351.40g/mol
- Monoisotopic mass
- 356.1784Da
- Atoms
- 47
- Elements
- 4
- Rings plus double bonds
- 12
The formula C21H21NO4 describes a molecule made of 21 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom 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 × 2171.78%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 216.02%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 13.99%14.007 × 1 = 14.007 g/mol
- O Oxygen × 418.21%15.999 × 4 = 63.996 g/mol
Look up another formula
Compounds with the formula C21H21NO4
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 301 to 400 of 403 compounds
![Methyl (2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pent-4-enoate chemical structure, C21H21NO4, CAS 225656-31-5](/s/BCAQZXPPJIDARV-LJQANCHMSA-N.svg)
Methyl (2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pent-4-enoate
CAS 225656-31-5C21H21NO4
![Cyclohexanone, 2-[(1R)-1-(4-nitrophenyl)-3-oxo-3-phenylpropyl]-, (2S)- chemical structure, C21H21NO4, CAS 927200-12-2](/s/HYXIHHCNETYVMO-OALUTQOASA-N.svg)
Cyclohexanone, 2-[(1R)-1-(4-nitrophenyl)-3-oxo-3-phenylpropyl]-, (2S)-
CAS 927200-12-2C21H21NO4
(2R,4S)-1-(9H-Fluoren-9-ylmethoxycarbonyl)-4-methyl-pyrrolidine-2-carboxylic acid
CAS 879374-50-2C21H21NO4
![4-Hexenoic acid, 2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-, (2S)- chemical structure, C21H21NO4, CAS 947154-63-4](/s/NNQQQPKHAFSSAY-PHXNAMCJSA-N.svg)
4-Hexenoic acid, 2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-, (2S)-
CAS 947154-63-4C21H21NO4
![Ethyl 4-{[4-(1H-indol-3-yl)butanoyl]oxy}benzoate chemical structure, C21H21NO4, CAS 86464-96-2](/s/ARKCIHFNKIBAKK-UHFFFAOYSA-N.svg)
Ethyl 4-{[4-(1H-indol-3-yl)butanoyl]oxy}benzoate
CAS 86464-96-2C21H21NO4
![5-(1-Butylbenzo[cd]indol-2(1H)-ylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione chemical structure, C21H21NO4, CAS 1151666-45-3](/s/LALQDKCZCHTPEB-UHFFFAOYSA-N.svg)
5-(1-Butylbenzo[cd]indol-2(1H)-ylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione
CAS 1151666-45-3C21H21NO4
1-(2-(4-Methoxybenzyl)-1-oxo-1,2,3,4-tetrahydroisoquinolin-6-yl)cyclopropane-1-carboxylic acid
CAS 1198764-97-4C21H21NO4
![[1-(4-Ethylbenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetic acid chemical structure, C21H21NO4, CAS 823177-83-9](/s/JGNUNJRFENTZCJ-UHFFFAOYSA-N.svg)
[1-(4-Ethylbenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetic acid
CAS 823177-83-9C21H21NO4
Ethyl 4-ethoxy-1-methyl-7-phenoxyisoquinoline-3-carboxylate
CAS 808118-46-9C21H21NO4
N-(1-Benzoylcyclopentyl)-4-methyl-2H-1,3-benzodioxole-5-carboxamide
CAS 644979-34-0C21H21NO4
![Prop-2-en-1-yl (2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoate chemical structure, C21H21NO4, CAS 146549-15-7](/s/UNGOIAPMDQYYIS-AWEZNQCLSA-N.svg)
Prop-2-en-1-yl (2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoate
CAS 146549-15-7C21H21NO4
![Methyl 4-[3-(2,3-dihydro-1-benzofuran-5-yl)pyrrolidine-1-carbonyl]benzoate chemical structure, C21H21NO4, CAS 2097909-68-5](/s/HZUZBRJSXCROGX-UHFFFAOYSA-N.svg)
Methyl 4-[3-(2,3-dihydro-1-benzofuran-5-yl)pyrrolidine-1-carbonyl]benzoate
CAS 2097909-68-5C21H21NO4
![2-{[(Benzyloxy)carbonyl]amino}-2-{3-phenylbicyclo[1.1.1]pentan-1-yl}acetic acid chemical structure, C21H21NO4, CAS 2287259-78-1](/s/VGPQPGOVNJBPKF-UHFFFAOYSA-N.svg)
2-{[(Benzyloxy)carbonyl]amino}-2-{3-phenylbicyclo[1.1.1]pentan-1-yl}acetic acid
CAS 2287259-78-1C21H21NO4
![rac-2-[(1R,2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]aceticacid,cis chemical structure, C21H21NO4, CAS 2580097-54-5](/s/RHASGVLJFVPVTQ-DJJJIMSYSA-N.svg)
rac-2-[(1R,2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]aceticacid,cis
CAS 2580097-54-5C21H21NO4
(9H-Fluoren-9-yl)methyl 3,3-dimethyl-2-oxomorpholine-4-carboxylate
CAS 2386292-54-0C21H21NO4
![rac-(1R,2S)-2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]cyclopropane-1-carboxylic acid chemical structure, C21H21NO4, CAS 2350449-72-6](/s/SKOOHYQIEFJZBT-FZKQIMNGSA-N.svg)
rac-(1R,2S)-2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]cyclopropane-1-carboxylic acid
CAS 2350449-72-6C21H21NO4
![3-((Benzyloxy)carbonyl)-5-phenyl-3-azabicyclo[3.1.1]heptane-1-carboxylic acid chemical structure, C21H21NO4, CAS 2580201-26-7](/s/BBDNRBGMKWMIPA-UHFFFAOYSA-N.svg)
3-((Benzyloxy)carbonyl)-5-phenyl-3-azabicyclo[3.1.1]heptane-1-carboxylic acid
CAS 2580201-26-7C21H21NO4
![rac-2-[(1R,2R)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropyl]acetic acid chemical structure, C21H21NO4, CAS 2639391-60-7](/s/JDJNHIONMAXKQN-UONOGXRCSA-N.svg)
rac-2-[(1R,2R)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropyl]acetic acid
CAS 2639391-60-7C21H21NO4
![3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propyl prop-2-enoate chemical structure, C21H21NO4, CAS 2386293-11-2](/s/RSZZRUNATJHCKP-UHFFFAOYSA-N.svg)
3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propyl prop-2-enoate
CAS 2386293-11-2C21H21NO4
![(1R,2R)-2-[(9H-Fluoren-9-ylmethoxycarbonylamino)methyl]cyclobutanecarboxylic acid chemical structure, C21H21NO4, CAS 2381742-74-9](/s/XKQGNHLPIZBBIJ-UONOGXRCSA-N.svg)
(1R,2R)-2-[(9H-Fluoren-9-ylmethoxycarbonylamino)methyl]cyclobutanecarboxylic acid
CAS 2381742-74-9C21H21NO4
![1'-Benzyl-7-formyl-2H-spiro[benzofuran-3,4'-piperidine]-6-carboxylic acid chemical structure, C21H21NO4, CAS 2961390-68-9](/s/DMTVLENGJSGJCD-UHFFFAOYSA-N.svg)
1'-Benzyl-7-formyl-2H-spiro[benzofuran-3,4'-piperidine]-6-carboxylic acid
CAS 2961390-68-9C21H21NO4
(R)-alpha-(Fmoc-amino)-1-methylcyclopropaneacetic Acid
CAS 2348297-69-6C21H21NO4
(2R,3S)-1-Fmoc-2-methylpyrrolidine-3-carboxylic acid
CAS 2744001-93-0C21H21NO4
(3S,5R)-1-(9H-Fluoren-9-ylmethoxycarbonyl)-5-methyl-pyrrolidine-3-carboxylic acid
CAS 2639623-92-8C21H21NO4
- (4E)-4-[Hydroxy-(4-methylphenyl)methylidene]-1-(3-hydroxypropyl)-5-phenylpyrrolidine-2,3-dione425418-60-6C21H21NO4
- Methyl 2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pent-4-enoate958887-47-3C21H21NO4
- Methyl 3-cyclohexyl-2-(2-formylfuran-3-yl)-1H-indole-6-carboxylate877272-42-9C21H21NO4
- N-(3-Butyl-2,4-dihydroxyphenyl)-3-hydroxynaphthalene-2-carboxamide90578-53-3C21H21NO4
- 3-(1H-Indol-3-yl)-1-(2,3,4-trimethoxyphenyl)but-2-en-1-one184963-77-7C21H21NO4
- 4-Methoxy-3,5-bis(4-methoxyphenyl)-1-methylpyridin-2(1H)-one920490-76-2C21H21NO4
- 2-(9H-Fluoren-9-ylmethoxycarbonylamino)-4-methyl-pent-2-enoic acidC21H21NO4
- 3,4-Bis[(4-methoxyphenyl)methoxy]pyridine128236-36-2C21H21NO4
- (S)-2-((1-(((9H-Fluoren-9-yl)methoxy)carbonyl)cyclopropyl)amino)propanoic acid1956437-63-0C21H21NO4
- (2R,3S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-3-methylpyrrolidine-2-carboxylic acid2382530-15-4C21H21NO4
- (2S,3R)-1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-2-methylpyrrolidine-3-carboxylic acid2219353-37-2C21H21NO4
- 2-[(Benzyloxy)carbonyl]-1-cyclopropyl-1,2,3,4-tetrahydroisoquinoline-6-carboxylic acid2803852-47-1C21H21NO4
- 2-[1-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)ethyl]cyclopropane-1-carboxylic acid2353927-65-6C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 2-benzyl-2,3-dimethylbutanoate2248288-83-5C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 2-(3-pentylphenyl)acetate2248303-81-1C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 2-(2,5-dimethylphenyl)-3-methylbutanoate2248291-26-9C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 2-benzyl-4-methylpentanoate2248317-61-3C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 2-[3-(2-methylpropyl)phenyl]propanoate2248390-53-4C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl (2S)-2-[4-(2-methylpropyl)phenyl]propanoate2248172-28-1C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 4-(4-propylphenyl)butanoate2248335-20-6C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3-[4-(2-methylpropyl)phenyl]propanoate2248293-04-9C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3-(4-tert-butylphenyl)propanoate2248283-36-3C21H21NO4
- 1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-2,2-dimethylazetidine-3-carboxylic acid2757958-80-6C21H21NO4
- 2-(1-{[(9H-Fluoren-9-ylmethoxy)carbonyl](methyl)amino}cyclopropyl)acetic acid2172070-18-5C21H21NO4
- 4-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)hex-5-enoic acid2171797-09-2C21H21NO4
- 3-(1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}azetidin-2-yl)propanoic acid2309468-86-6C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3-[4-(propan-2-yl)phenyl]butanoate2248336-08-3C21H21NO4
- 3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}(prop-2-en-1-yl)amino)propanoic acid2567502-94-5C21H21NO4
- 2-(1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-2-methylazetidin-2-yl)acetic acid2580209-16-9C21H21NO4
- 1'-[(Benzyloxy)carbonyl]-1',2'-dihydrospiro[cyclopentane-1,3'-indole]-6'-carboxylic acid2580224-21-9C21H21NO4
- 2-[(Benzyloxy)carbonyl]-6-phenyl-2-azaspiro[3.3]heptane-6-carboxylic acid2580243-16-7C21H21NO4
- 2-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]pent-4-enoic acid2353521-29-4C21H21NO4
- rac-(1R,3R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-dimethylcyclopropane-1-carboxylic acid2580097-42-1C21H21NO4
- 1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-5-methylpyrrolidine-3-carboxylic acid2385014-13-9C21H21NO4
- 5-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpent-2-enoic acid2580294-89-7C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 2,2-dimethyl-5-phenylpentanoate2248307-43-7C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3-methyl-2-(2-phenylethyl)butanoate2248352-43-2C21H21NO4
- rac-(1R,2R)-1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2-methylcyclopropane-1-carboxylic acid2580101-66-0C21H21NO4
- rac-(1R,2S)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclobutane-1-carboxylic acid2580113-50-2C21H21NO4
- 3-[1-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)cyclopropyl]propanoic acid2580238-85-1C21H21NO4
- 2-(1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-3-methylazetidin-3-yl)acetic acid2580231-44-1C21H21NO4
- 4-({[(9H-Fluoren-9-yl)methoxy]carbonyl}(methyl)amino)pent-2-enoic acid2639466-23-0C21H21NO4
- 1-{1-[(Benzyloxy)carbonyl]-1,2,3,4-tetrahydroquinolin-4-yl}cyclopropane-1-carboxylic acid2639444-80-5C21H21NO4
- rac-(1R,2R)-1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,3-dimethylcyclopropane-1-carboxylic acid2731013-71-9C21H21NO4
- tert-Butyl N-[2-(4-methylbenzoyl)-1-benzofuran-3-yl]carbamate2680829-40-5C21H21NO4
- Benzyl 6-hydroxy-1-(3-oxocyclobutyl)-1,2,3,4-tetrahydroisoquinoline-2-carboxylate2680778-28-1C21H21NO4
- Benzyl 4-oxo-3,4-dihydrospiro[1-benzopyran-2,3'-piperidine]-1'-carboxylate2680662-48-8C21H21NO4
- Benzyl N-[2-hydroxy-3-(naphthalen-1-yloxy)propyl]carbamate2680750-79-0C21H21NO4
- Benzyl N-benzyl-N-[2-(furan-2-yl)-2-hydroxyethyl]carbamate2680686-37-5C21H21NO4
- 2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2-(2-methylcyclopropyl)acetic acid2272877-71-9C21H21NO4
- (9H-Fluoren-9-yl)methyl 3-[(acetyloxy)methyl]azetidine-1-carboxylate2694732-69-7C21H21NO4
- rac-(9H-fluoren-9-yl)methyl (3R,3aR,6aS)-3-hydroxy-hexahydro-1H-furo[3,4-b]pyrrole-1-carboxylate2764000-31-7C21H21NO4
- (9H-Fluoren-9-yl)methyl 7-hydroxy-5-oxa-2-azaspiro[3.4]octane-2-carboxylate2763902-99-2C21H21NO4
- (9H-Fluoren-9-yl)methyl 4-(hydroxymethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxylate2763905-80-0C21H21NO4
- (9H-Fluoren-9-yl)methyl N-[1-(hydroxymethyl)-2-oxabicyclo[2.1.1]hexan-4-yl]carbamate2763922-93-4C21H21NO4
- rac-2-[(1R,2S)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropyl]acetic acid2870682-39-4C21H21NO4
- (4R)-4-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2-methylidenepentanoic acid2913185-12-1C21H21NO4
- (4S)-4-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2-methylidenepentanoic acid2913182-13-3C21H21NO4
- N-[(4-Oxo-3-phenyl-4H-1-benzopyran-2-yl)methyl]carbamic acid 1,1-dimethylethyl ester1300583-50-9C21H21NO4
- (2R,3R)-1-Fmoc-2-methylpyrrolidine-3-carboxylic acid2741740-62-3C21H21NO4
- 2-[(1S,2R)-2-(9H-Fluoren-9-ylmethoxycarbonylamino)cyclobutyl]acetic acid3028132-61-5C21H21NO4
- 2-Cyclopropyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid2353150-58-8C21H21NO4
- 5-Methoxy-1,2-dimethyl-alpha-(2-oxo-2-phenylethyl)-1H-indole-3-acetic acid52509-62-3C21H21NO4
- 3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-methylcyclobutane-1-carboxylic acid2932447-29-3C21H21NO4
- 3-Hydroxy-1-(2-methoxyethyl)-4-(4-methylbenzoyl)-5-phenyl-2,5-dihydro-1H-pyrrol-2-oneC21H21NO4
- 5-Methoxy-1-methyl-7-oxo-2,3,7,8,9,9a-hexahydro-1H-benzo[de]quinolin-6-yl benzoate17432-14-3C21H21NO4
- 2-((((9H-Fluoren-9-yl)methoxy)carbonyl)(allyl)amino)propanoic acid1217751-94-4C21H21NO4
- 2-[2-(3-Acetyl-2,6-dimethylphenoxy)-1-methylethyl]-1H-isoindole-1,3(2H)-dione1356452-03-3C21H21NO4
- (3R,4S)-1-(9H-Fluoren-9-ylmethoxycarbonyl)-4-methyl-pyrrolidine-3-carboxylic acid2351183-06-5C21H21NO4
- Methyl 3-(2-methoxyethenyl)-1-[(4-methoxyphenyl)methyl]indole-4-carboxylate1262420-73-4C21H21NO4
- Ethyl 2-(2-hydroxynaphthalen-1-yl)-2-((4-methoxyphenyl)amino)acetate2247930-55-6C21H21NO4
- Ethyl 1-([1,1'-biphenyl]-4-yl)-3-acetyl-5-oxopyrrolidine-2-carboxylate1835339-06-4C21H21NO4
- rel-Ethyl (2R,3S)-1-([1,1'-biphenyl]-4-yl)-3-acetyl-5-oxopyrrolidine-2-carboxylate1835339-07-5C21H21NO4
- 4-Acetyl N-Isoindoline-1,3-dione Mexiletine1237512-78-5C21H21NO4
- (2S)-2-(Benzyloxycarbonylamino)-2-spiro[cyclopropane-1,2'-indane]-1'-yl-acetic acid2607136-72-9C21H21NO4
- (3S,5S)-1-(9H-Fluoren-9-ylmethoxycarbonyl)-5-methyl-pyrrolidine-3-carboxylic acid2639622-17-4C21H21NO4
Frequently asked questions
What is the molar mass of C21H21NO4?
The molar mass of C21H21NO4 is 351.40 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 4 oxygen atoms. The monoisotopic mass is 356.1784 Da.
How many compounds have the formula C21H21NO4?
CompoundList lists 403 compounds with the molecular formula C21H21NO4, including Methyl (2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pent-4-enoate, Cyclohexanone, 2-[(1R)-1-(4-nitrophenyl)-3-oxo-3-phenylpropyl]-, (2S)-, (2R,4S)-1-(9H-Fluoren-9-ylmethoxycarbonyl)-4-methyl-pyrrolidine-2-carboxylic acid. 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 C21H21NO4?
C21H21NO4 has a degree of unsaturation of 12. 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.