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 1 to 100 of 403 compounds
Bms753
CAS 215307-86-1C21H21NO4
![1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}piperidine-4-carboxylic acid chemical structure, C21H21NO4, CAS 148928-15-8](/s/OJYOOHSQOIDDOO-UHFFFAOYSA-N.svg)
1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}piperidine-4-carboxylic acid
CAS 148928-15-8C21H21NO4
Zindoxifene
CAS 86111-26-4C21H21NO4
![(2S)-1-[(9H-Fluoren-9-ylmethoxy)carbonyl]piperidine-2-carboxylic acid chemical structure, C21H21NO4, CAS 86069-86-5](/s/CKLAZLINARHOTG-IBGZPJMESA-N.svg)
(2S)-1-[(9H-Fluoren-9-ylmethoxy)carbonyl]piperidine-2-carboxylic acid
CAS 86069-86-5C21H21NO4
NeuroSensor 521
CAS 1428730-05-5C21H21NO4
1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-3-carboxylic acid
CAS 158922-07-7C21H21NO4
(2S)-3-Cyclopropyl-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)propanoic acid
CAS 214750-76-2C21H21NO4
![1-[(9H-Fluoren-9-ylmethoxy)carbonyl]piperidine-2-carboxylic acid chemical structure, C21H21NO4, CAS 105751-19-7](/s/CKLAZLINARHOTG-UHFFFAOYSA-N.svg)
1-[(9H-Fluoren-9-ylmethoxy)carbonyl]piperidine-2-carboxylic acid
CAS 105751-19-7C21H21NO4
D-Fmoc-pipecolic acid
CAS 101555-63-9C21H21NO4
Fmoc-cycloleucine
CAS 117322-30-2C21H21NO4
Fmoc-L-beta-homoproline
CAS 193693-60-6C21H21NO4
(2S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-2-methylpyrrolidine-2-carboxylic acid
CAS 167275-47-0C21H21NO4
Dimethyl 2,6-dimethyl-4-(1-naphthyl)-1,4-dihydro-3,5-pyridinedicarboxylate
CAS 50672-60-1C21H21NO4
N-Fmoc-(1R,2S)-2-Amino-1-cyclopentanecarboxylic acid
CAS 352707-76-7C21H21NO4
(3R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-3-carboxylic acid
CAS 193693-67-3C21H21NO4
![(3S)-1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}piperidine-3-carboxylic acid chemical structure, C21H21NO4, CAS 193693-68-4](/s/FINXGQXNIBNREL-AWEZNQCLSA-N.svg)
(3S)-1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}piperidine-3-carboxylic acid
CAS 193693-68-4C21H21NO4
(S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-methylpent-4-enoic acid
CAS 288617-71-0C21H21NO4
(R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-methylpent-4-enoic acid
CAS 288617-76-5C21H21NO4
![(2R)-1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-2-methylpyrrolidine-2-carboxylic acid chemical structure, C21H21NO4, CAS 1286768-33-9](/s/VOQFOIAFEGUNRZ-OAQYLSRUSA-N.svg)
(2R)-1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-2-methylpyrrolidine-2-carboxylic acid
CAS 1286768-33-9C21H21NO4
rac-(1R,3S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)cyclopentane-1-carboxylic acid
CAS 220497-67-6C21H21NO4
2-((2R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)pyrrolidin-2-yl)acetic acid
CAS 193693-61-7C21H21NO4
![[5-Hydroxy-4-(pyrrolidin-1-ylmethyl)-1-benzofuran-3-yl]-(4-methoxyphenyl)methanone chemical structure, C21H21NO4, CAS 681838-73-3](/s/JZVAMPSVLXLRKR-UHFFFAOYSA-N.svg)
[5-Hydroxy-4-(pyrrolidin-1-ylmethyl)-1-benzofuran-3-yl]-(4-methoxyphenyl)methanone
CAS 681838-73-3C21H21NO4
(1S,2S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)cyclopentane-1-carboxylic acid
CAS 359586-64-4C21H21NO4
(R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-cyclopropylpropanoic acid
CAS 170642-29-2C21H21NO4
- 6 suppliers(+)-(1S,3R)-N-Fmoc-3-aminocyclopentane-1-carboxylic acid220497-66-5C21H21NO4
- (1R,2R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)cyclopentanecarboxylic acid359586-69-9C21H21NO4
- 6-{[4-(3-Methylphenoxy)phenyl]carbamoyl}cyclohex-3-ene-1-carboxylic acid329195-79-1C21H21NO4
- 1-[2-(2H-1,3-Benzodioxol-5-yl)ethyl]-3-[(4-methylphenyl)methyl]pyrrolidine-2,5-dione5988-74-9C21H21NO4
- 1 suppliers(3R)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)hex-5-enoic acid269726-95-6C21H21NO4
- (2S,4R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-4-methylpyrrolidine-2-carboxylic acid333777-34-7C21H21NO4
- 2-[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]acetic acid2137718-93-3C21H21NO4
- 1 suppliers2-[(Cyclopropylmethyl)({[(9H-fluoren-9-yl)methoxy]carbonyl})amino]acetic acid1341306-32-8C21H21NO4
- 1 suppliers1-((((9H-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)cyclobutane-1-carboxylic acid1700368-07-5C21H21NO4
- 1-(((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)methyl)cyclobutane-1-carboxylic acid1550436-68-4C21H21NO4
- 2-(1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}pyrrolidin-3-yl)acetic acid868523-86-8C21H21NO4
- 2-Cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid1340154-82-6C21H21NO4
- 2-Cyclobutyl-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)acetic acid1695292-51-3C21H21NO4
- 3-(1,3-Benzodioxol-5-ylmethylamino)-5-(4-methoxyphenyl)cyclohex-2-en-1-one692283-19-5C21H21NO4
- 3-Cyclopropyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid683217-51-8C21H21NO4
- 2-[(But-3-en-1-yl)({[(9H-fluoren-9-yl)methoxy]carbonyl})amino]acetic acid227006-55-5C21H21NO4
- 1 suppliersN,N-Diethyl-2-[(2-oxo-4-phenyl-2H-chromen-7-yl)oxy]acetamide406475-53-4C21H21NO4
- 5-(4-Methoxybenzoyl)-6,6,8-trimethyl-5,6-dihydro[1,3]dioxolo[4,5-g]quinoline728025-26-1C21H21NO4
- (Z)-7-((Dimethylamino)methyl)-6-hydroxy-2-((E)-3-(2-methoxyphenyl)allylidene)benzofuran-3(2H)-one896076-89-4C21H21NO4
- 1-[2-(1,3-Benzodioxol-5-yl)ethyl]-3-[(3-methylphenyl)methyl]pyrrolidine-2,5-dione369398-34-5C21H21NO4
- 1H-Pyrrole-2-propanoic acid, 1-(2-methoxyphenyl)-5-(4-methoxyphenyl)-3150-65-0C21H21NO4
- 2 suppliersXen-907912656-34-9C21H21NO4
- 1 suppliers(2S)-1-(9H-Fluoren-9-ylmethoxycarbonyl)-3,3-dimethyl-azetidine-2-carboxylic acid2231665-66-8C21H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 2-(4-(2-methylpropyl)phenyl)propanoate2140889-61-6C21H21NO4
- [1-[Benzyl(methyl)amino]-1-oxopropan-2-yl] 3-methyl-1-benzofuran-2-carboxylate744259-67-4C21H21NO4
- 2-[1-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]acetic acid1199775-14-8C21H21NO4
- 5-[(4-Ethoxyphenoxy)methyl]-N-methyl-N-phenyl-2-furamide438472-75-4C21H21NO4
- 1 suppliers(2S,5S)-Fmoc-5-methylpyrrolidine-2-carboxylic acid1932784-54-7C21H21NO4
- rac-(1s,3s)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)cyclobutane-1-carboxylic acid2137134-93-9C21H21NO4
- 1-(1,4-Dioxa-8-azaspiro[4.5]dec-8-ylmethyl)-3H-benzo[f]chromen-3-one877806-33-2C21H21NO4
- 1-Benzofuran-2-yl-(6,7-dimethoxy-1-methyl-3,4-dihydro-1H-isoquinolin-2-yl)methanone401462-01-9C21H21NO4
- (2S)-2-(9H-Fluoren-9-ylmethoxycarbonylamino)-2-methylpent-4-enoic acid1823526-52-8C21H21NO4
- 1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-3-methylpyrrolidine-3-carboxylic acid1343249-22-8C21H21NO4
- (3S,4S)-1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-4-methylpyrrolidine-3-carboxylic acid1690085-29-0C21H21NO4
- 2-(1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}azetidin-3-yl)propanoic acid1594944-87-2C21H21NO4
- 1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-3,3-dimethylazetidine-2-carboxylic acid2137462-24-7C21H21NO4
- rac-(2R,5R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-5-methylpyrrolidine-2-carboxylic acid2138004-01-8C21H21NO4
- 7-Hydroxy-2-methyl-8-(morpholin-4-ylmethyl)-3-phenylchromen-4-one111978-67-7C21H21NO4
- Ethyl [(3-acetyl-2-methyl-1-phenyl-1H-indol-5-yl)oxy]acetate157064-65-8C21H21NO4
- 2-((3R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)pyrrolidin-3-yl)acetic acid2137100-59-3C21H21NO4
- 2-{1-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropyl}acetic acid2094859-65-9C21H21NO4
- 1'-(2-Phenoxyacetyl)spiro[chroman-2,4'-piperidin]-4-one887467-18-7C21H21NO4
- (R)-3-Cyclopropyl-3-(9H-fluoren-9-ylmethoxycarbonylamino)-propionic acid1260589-74-9C21H21NO4
- (S)-2-(1-(((9H-Fluoren-9-yl)methoxy)carbonyl)pyrrolidin-3-yl)acetic acid2137082-40-5C21H21NO4
- 1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-3-methylpyrrolidine-2-carboxylic acid1597004-44-8C21H21NO4
- 2-Cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}(methyl)amino)acetic acid1702784-66-4C21H21NO4
- Ethyl 5-(acetyloxy)-1-benzyl-2-methyl-1H-indole-3-carboxylate37075-91-5C21H21NO4
- 1-(2,3-Dihydro-1,4-benzodioxin-6-yl)-3-[(3,5-dimethylphenyl)methyl]pyrrolidine-2,5-dione370853-86-4C21H21NO4
- 1-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2,2-dimethylcyclopropane-1-carboxylic acid885951-75-7C21H21NO4
- 1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-4,4-dimethylazetidine-2-carboxylic acid2870652-22-3C21H21NO4
- 4-(5-Ethoxy-2-phenyl-1-benzofuran-3-carbonyl)morpholine433700-44-8C21H21NO4
- 2-((6-Ethyl-4-methyl-2-oxo-2H-chromen-7-yl)oxy)-N-(m-tolyl)acetamide301331-49-7C21H21NO4
- 2-(4-Methyl-2-oxochromen-7-yl)oxy-N-(2,4,6-trimethylphenyl)acetamide303031-76-7C21H21NO4
- Bulgaramine96681-78-6C21H21NO4
- Apomorphine diacetate6191-56-6C21H21NO4
- 7-Hydroxy-4-methyl-8-(morpholin-4-ylmethyl)-3-phenylchromen-2-one869340-64-7C21H21NO4
- 2-(4-{[5-(4-Methoxyphenyl)-3-oxocyclohex-1-enyl]amino}phenyl)acetic acid525581-64-0C21H21NO4
- 7-(Benzyloxy)-8-methyl-2-morpholino-4H-chromen-4-one130735-57-8C21H21NO4
- N-(2-Methoxyphenyl)-2-(6,7,8,9-tetrahydrodibenzofuran-2-yloxy)acetamide380645-92-1C21H21NO4
- Ethyl 4-{[(4,6-dimethyl-1-benzofuran-3-yl)acetyl]amino}benzoate880785-03-5C21H21NO4
- Methyl 1-(9H-xanthene-9-carbonyl)piperidine-4-carboxylate349442-05-3C21H21NO4
- 7-Hydroxy-3-(4-methoxyphenyl)-8-(pyrrolidin-1-ylmethyl)-2H-chromen-2-one717893-89-5C21H21NO4
- N-(3,4-Dimethylphenyl)-5-[(2-methoxyphenoxy)methyl]furan-2-carboxamide445231-47-0C21H21NO4
- 4-(2,3-Dimethoxy-phenyl)-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-8-carboxylic acid1212298-71-9C21H21NO4
- 8-(9H-Xanthen-9-ylcarbonyl)-1,4-dioxa-8-azaspiro[4.5]decane774589-01-4C21H21NO4
- 4-Acetyl-3-hydroxy-5-(3-methoxyphenyl)-1-(2-phenylethyl)-1,5-dihydro-2H-pyrrol-2-one425417-14-7C21H21NO4
- 1'-(2-Methoxybenzoyl)spiro[chromane-2,4'-piperidine]-4-one877810-72-5C21H21NO4
- 4-(1,3-Benzodioxol-5-yl)-1-cyclopentyl-3-phenoxyazetidin-2-one696639-58-4C21H21NO4
- 9-(3-Methoxypropyl)-3-phenyl-9,10-dihydrochromeno[8,7-e][1,3]oxazin-4(8H)-one951954-06-6C21H21NO4
- 9-Isopropyl-3-(2-methoxyphenyl)-9,10-dihydrochromeno[8,7-e][1,3]oxazin-4(8H)-one951983-21-4C21H21NO4
- 9-(3-Methoxypropyl)-3-phenyl-9,10-dihydrochromeno[8,7-e][1,3]oxazin-2(8H)-one946384-31-2C21H21NO4
- Flavone-8-acetic acid dimethylaminoethyl ester138531-34-7C21H21NO4
- 9-Isopropyl-3-(4-methoxyphenyl)-9,10-dihydrochromeno[8,7-e][1,3]oxazin-4(8H)-one929846-03-7C21H21NO4
- N-[2-(4-Methoxyphenyl)-4-oxo-4H-chromen-6-yl]-2,2-dimethylpropanamide923121-47-5C21H21NO4
- N-[2-(4-Methoxyphenyl)-4-oxo-4H-chromen-7-yl]-2,2-dimethylpropanamide923121-63-5C21H21NO4
- 1-(2-((6,7-Dimethoxyquinolin-4-yl)oxy)-4,5-dimethylphenyl)ethan-1-one666729-57-3C21H21NO4
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 Bms753, 1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}piperidine-4-carboxylic acid, Zindoxifene. 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.