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 201 to 300 of 403 compounds
2-(3-(Cyclopentyloxy)-4-methoxybenzyl)isoindoline-1,3-dione
CAS 287196-92-3C21H21NO4
![L-Alanine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-N-2-propen-1-yl- chemical structure, C21H21NO4, CAS 923035-13-6](/s/DQEKHVILZICIBU-AWEZNQCLSA-N.svg)
L-Alanine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-N-2-propen-1-yl-
CAS 923035-13-6C21H21NO4
(S)-3-Cyclopropyl-3-(9H-fluoren-9-ylmethoxycarbonylamino)-propionic acid
CAS 1260605-12-6C21H21NO4
1-((((9H-Fluoren-9-yl)methoxy)carbonyl)(ethyl)amino)cyclopropane-1-carboxylic acid
CAS 1698188-75-8C21H21NO4
(S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)-2-cyclopropylacetic acid
CAS 2642726-08-5C21H21NO4
Aporphine-10,11-diol, diacetate
CAS 18720-24-6C21H21NO4
Ethyl 5-(acetyloxy)-2-methyl-1-(3-methylphenyl)-1H-indole-3-carboxylate
CAS 309287-26-1C21H21NO4
![2-Methyl-3-(piperidine-1-carbonyl)naphtho[1,2-b]furan-5-yl acetate chemical structure, C21H21NO4, CAS 690641-06-6](/s/OZLLNIYTVCMAIS-UHFFFAOYSA-N.svg)
2-Methyl-3-(piperidine-1-carbonyl)naphtho[1,2-b]furan-5-yl acetate
CAS 690641-06-6C21H21NO4
![9-(4-Methoxyphenethyl)-4-methyl-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one chemical structure, C21H21NO4, CAS 858766-70-8](/s/IRPPNWROBZTZOI-UHFFFAOYSA-N.svg)
9-(4-Methoxyphenethyl)-4-methyl-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one
CAS 858766-70-8C21H21NO4
(1R,3R)-3-(Fmoc-amino)cyclopentanecarboxylic acid
CAS 872174-18-0C21H21NO4
hDHODH-IN-9
CAS 133676-47-8C21H21NO4
![Prop-2-yn-1-yl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate chemical structure, C21H21NO4, CAS 614755-88-3](/s/ZFPLQOUGMKPQIN-UHFFFAOYSA-N.svg)
Prop-2-yn-1-yl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate
CAS 614755-88-3C21H21NO4
![1-[(9H-Fluoren-9-ylmethoxy)carbonyl]-4-methylpyrrolidine-3-carboxylic acid chemical structure, C21H21NO4, CAS 1339211-14-1](/s/UZAANVFMPWVILR-UHFFFAOYSA-N.svg)
1-[(9H-Fluoren-9-ylmethoxy)carbonyl]-4-methylpyrrolidine-3-carboxylic acid
CAS 1339211-14-1C21H21NO4
9H-Fluoren-9-ylmethyl N-(5,5-dimethyl-2-oxooxolan-3-yl)carbamate
CAS 1427378-74-2C21H21NO4
1-(9H-Fluoren-9-ylmethoxycarbonyl)-2-methylpyrrolidine-3-carboxylic acid
CAS 1508865-88-0C21H21NO4
RCS-4 N-(5-carboxypentyl) metabolite
CAS 1427521-39-8C21H21NO4
Fmoc-D-Ala(alpha-cyclopropyl)-OH H2O
CAS 1926163-86-1C21H21NO4
![3-{[(9H-Fluoren-9-ylmethoxy)carbonyl]amino}-1-methylcyclobutane-1-carboxylic acid chemical structure, C21H21NO4, CAS 2243512-77-6](/s/CHTATNXUUPVFFZ-UHFFFAOYSA-N.svg)
3-{[(9H-Fluoren-9-ylmethoxy)carbonyl]amino}-1-methylcyclobutane-1-carboxylic acid
CAS 2243512-77-6C21H21NO4
Fmoc-Pro(3R-Me)-OH
CAS 928330-94-3C21H21NO4
![3-[1-(2,5-Dimethoxyphenyl)-5-phenyl-1H-pyrrol-2-yl]propanoic acid chemical structure, C21H21NO4, CAS 432524-52-2](/s/BQKWQDBMBIQCJD-UHFFFAOYSA-N.svg)
3-[1-(2,5-Dimethoxyphenyl)-5-phenyl-1H-pyrrol-2-yl]propanoic acid
CAS 432524-52-2C21H21NO4
Ethyl 5-(acetyloxy)-2-methyl-1-(2-methylphenyl)-1H-indole-3-carboxylate
CAS 330952-41-5C21H21NO4
![10-(2-Furylmethyl)-7-methyl-1,2,3,4,10,11-hexahydro-5H,9H-benzo[3,4]chromeno[6,7-e][1,3]oxazin-5-one chemical structure, C21H21NO4, CAS 849918-38-3](/s/RRZDMUGHXQRFDH-UHFFFAOYSA-N.svg)
10-(2-Furylmethyl)-7-methyl-1,2,3,4,10,11-hexahydro-5H,9H-benzo[3,4]chromeno[6,7-e][1,3]oxazin-5-one
CAS 849918-38-3C21H21NO4
![N-[(4-Ethoxyphenyl)-(4-methoxyphenyl)methyl]furan-2-carboxamide chemical structure, C21H21NO4, CAS 375835-78-2](/s/RJCHPNUKNOHPFJ-UHFFFAOYSA-N.svg)
N-[(4-Ethoxyphenyl)-(4-methoxyphenyl)methyl]furan-2-carboxamide
CAS 375835-78-2C21H21NO4
![3,5-Dimethylphenyl (1,3-dioxooctahydro-4,6-ethenocyclopropa[f]isoindol-2(1H)-yl)acetate chemical structure, C21H21NO4, CAS 1005053-25-7](/s/DLPSGBWBIVTYPU-UHFFFAOYSA-N.svg)
3,5-Dimethylphenyl (1,3-dioxooctahydro-4,6-ethenocyclopropa[f]isoindol-2(1H)-yl)acetate
CAS 1005053-25-7C21H21NO4
- 2,5-Dimethylphenyl (1,3-dioxooctahydro-4,6-ethenocyclopropa[f]isoindol-2(1H)-yl)acetate1005053-60-0C21H21NO4
- 3-(2-Furylmethyl)-3,4,8,9,10,11-hexahydro-2H-cyclohepta[3,4]chromeno[8,7-e][1,3]oxazin-6(7H)-one861639-96-5C21H21NO4
- N-Benzyl-2-(5-methoxy-4,7-dimethyl-2-oxo-2H-chromen-3-yl)acetamide853897-13-9C21H21NO4
- N-(2-Ethoxyphenyl)-5-[(2-methylphenoxy)methyl]furan-2-carboxamide878716-07-5C21H21NO4
- 2-(2-Ethoxyethyl)-5-phenacyloxyisoquinolin-1-one898457-49-3C21H21NO4
- N-(2-Ethoxyphenyl)-5-[(4-methylphenoxy)methyl]furan-2-carboxamide890614-54-7C21H21NO4
- 2-Methyl-8-quinolinyl 4,7,7-trimethyl-2,3-dioxobicyclo[2.2.1]heptane-1-carboxylate889307-40-8C21H21NO4
- 3-[5-({[2-(2-Methoxyphenyl)ethyl]amino}methyl)-2-furyl]benzoic acid931995-50-5C21H21NO4
- (2S)-2-[Cyclopropyl(9H-fluoren-9-ylmethoxycarbonyl)amino]propanoic acid1821827-07-9C21H21NO4
- 6-Benzyl 1-tert-butyl indole-1,6-dicarboxylate208772-93-4C21H21NO4
- 4-Hydroxy-1-methyl-7-phenoxy-isoquinoline-3-carboxylic acid butyl ester808116-09-8C21H21NO4
- N-Fmoc-(+/-)-3-amino-3-methylpent-4-enoic acid1335042-24-4C21H21NO4
- 2-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclobutane-1-carboxylic acid2253640-53-6C21H21NO4
- N-Fmoc-N-cyclobutyl-glycine2138239-36-6C21H21NO4
- (4R)-1-Fmoc-4-methyl-D-proline2580100-65-6C21H21NO4
- 1H-Indole-3-carboxylic acid, 2-methyl-5-(oxiranylmethoxy)-1-phenyl-, ethyl ester76410-18-9C21H21NO4
- 9-(2-Methoxybenzyl)-3,4-dimethyl-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one859107-92-9C21H21NO4
- 9-(4-Methoxybenzyl)-3,4-dimethyl-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one858767-91-6C21H21NO4
- Methanone, (8-methoxy-2-(4-morpholinyl)-2H-1-benzopyran-3-yl)phenyl-122438-07-7C21H21NO4
- 1'-(3-Methoxybenzoyl)spiro[chroman-2,4'-piperidin]-4-one877810-73-6C21H21NO4
- Methyl 1-((3-oxo-3H-benzo[f]chromen-1-yl)methyl)piperidine-4-carboxylate903856-05-3C21H21NO4
- 5,6-Dihydro-3,8,9-trimethoxy-5-methylbenzo(c)phenanthridin-2-ol88114-49-2C21H21NO4
- 2-(4-Acetyl-2-methoxyphenoxy)-1-(2-methyl-1H-indol-3-yl)propan-1-one924240-68-6C21H21NO4
- 1-[4-(2,3-Dihydro-1,4-benzodioxin-6-ylmethoxy)phenyl]-N-(furan-2-ylmethyl)methanamine938007-76-2C21H21NO4
- 8-Benzyloxy-4-ethoxycarbonylmethoxy-2-methylquinoline179626-84-7C21H21NO4
- 2-Methoxy-N-{4-oxo-2-[4-(propan-2-yl)phenyl]-4H-chromen-6-yl}acetamide1010924-62-5C21H21NO4
- (E)-2-(9H-Fluoren-9-ylmethoxycarbonylamino)-4-methyl-pent-2-enoic acid198546-09-7C21H21NO4
- 2-[4-(2-Methoxycarbonylethyl)-2,6-dimethylphenyl]-1H-indole-6-carboxylic acid1021165-79-6C21H21NO4
- N-(4-(Benzo[d][1,3]dioxol-5-yloxy)but-2-yn-1-yl)-2-phenylbutanamide1448128-13-9C21H21NO4
- N-((2-Hydroxy-1,2,3,4-tetrahydronaphthalen-2-yl)methyl)-7-methoxybenzofuran-2-carboxamide1421500-74-4C21H21NO4
- Ethyl 4-benzyl-3,5-dioxo-4-azatetracyclo[5.3.2.0^{2,6}.0^{8,10}]dodec-11-ene-9-carboxylate1803601-47-9C21H21NO4
- 1-(2-([(9H-Fluoren-9-ylmethoxy)carbonyl]amino)ethyl)cyclopropane-1-carboxylic acid1936060-13-7C21H21NO4
- (S)-1-Fmoc-3-methylpyrrolidine-3-carboxylic acid2770896-40-5C21H21NO4
- rac-(1R,2R)-2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]cyclopropane-1-carboxylic acid, trans2351672-79-0C21H21NO4
- [6-Ethyl-5-oxo-6-(4-phenylphenyl)-2H-pyran-2-yl] N-methylcarbamate36067-29-5C21H21NO4
- 4-Ethyl-9-(4-methoxybenzyl)-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one859139-26-7C21H21NO4
- 4-Ethyl-9-(3-methoxybenzyl)-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one849033-98-3C21H21NO4
- N-[2-(4-Methoxybenzoyl)-1-benzofuran-3-yl]-3-methylbutanamide630050-87-2C21H21NO4
- 9-(3-Methoxybenzyl)-3,4-dimethyl-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one861643-89-2C21H21NO4
- 2-(7-Hydroxy-4,8-dimethyl-2-oxo-2H-chromen-3-yl)-N-(2-phenylethyl)acetamide853897-47-9C21H21NO4
- (1S,3S)-3-(Fmoc-amino)cyclopentanecarboxylic acid872174-19-1C21H21NO4
- Ethyl 4-{[(5-ethyl-1-benzofuran-3-yl)acetyl]amino}benzoate879933-99-0C21H21NO4
- 1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-4-methylpyrrolidine-2-carboxylic acid632350-42-6C21H21NO4
- Propyl 2-(4-ethoxyphenyl)-1-oxo-1,2-dihydroisoquinoline-4-carboxylate1031961-08-6C21H21NO4
- N-Fmoc-N-cyclopropyl-L-alanineC21H21NO4
- Diethyl [(2'-cyanobiphenyl-4-yl)methyl]malonate154151-89-0C21H21NO4
- (3-Benzyloxy-7-methoxynaphthalen-2-ylamino)-acetic acid methyl ester1092455-21-4C21H21NO4
- N-(2-Cyclopropyl-2-hydroxy-2-phenylethyl)-7-methoxybenzofuran-2-carboxamide1421476-32-5C21H21NO4
- (4E)-2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)hex-4-enoic acid1704327-77-4C21H21NO4
- (R)-1-Fmoc-3-methylpyrrolidine-3-carboxylic acid2770894-96-5C21H21NO4
- 3-(1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}azetidin-3-yl)propanoic acid2137554-08-4C21H21NO4
- RCS-4 N-pentanoic acid metabolite-d52748469-51-2C21H21NO4
- (2E)-4-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpent-2-enoic acid2225181-74-6C21H21NO4
- Benzyl 5-(3-hydroxy-5-isopropoxyphenyl)-1H-pyrrole-2-carboxylate1235566-60-5C21H21NO4
- 3-Ethyl-1-(9H-fluoren-9-ylmethoxycarbonyl)azetidine-3-carboxylic acid2280718-19-4C21H21NO4
- (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-(1-methylcyclopropyl)acetic acid2348287-11-4C21H21NO4
- Ethyl 3-ethyl-4,5-dioxo-1,2-diphenylpyrrolidine-3-carboxylate5468-11-1C21H21NO4
- 4-[Hydroxy(phenyl)methylidene]-1-(3-methoxypropyl)-5-phenylpyrrolidine-2,3-dioneC21H21NO4
- Pyridine, 2,6-bis[(2-methoxyphenoxy)methyl]-66433-99-6C21H21NO4
- [2-(3,4-Dihydro-2H-quinolin-1-yl)-2-oxoethyl] 3-(2-methoxyphenyl)prop-2-enoate5484-32-2C21H21NO4
- Methyl 4-[(2,4-dimethylphenyl)methoxy]-6-methoxyquinoline-2-carboxylate1358224-27-7C21H21NO4
- (R)-1-((9H-Fluoren-9-yl)methyl) 2-methyl pyrrolidine-1,2-dicarboxylate1820575-02-7C21H21NO4
- N-(2-(3,4-Dimethoxyphenyl)-2-hydroxyethyl)-1-naphthamide1798023-58-1C21H21NO4
- 2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpent-4-enoic acid1698946-27-8C21H21NO4
- Methyl 1-(4-methoxybenzyl)-3-(3-oxopropyl)-1H-indole-4-carboxylate1262420-74-5C21H21NO4
- N-(1-(2,3-Dihydrobenzofuran-5-yl)propan-2-yl)-7-methoxybenzofuran-2-carboxamide2034515-53-0C21H21NO4
- (3R,4R)-1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-4-methylpyrrolidine-3-carboxylic acid1448419-08-6C21H21NO4
- 2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)ethyl 2-methylprop-2-enoate457627-35-9C21H21NO4
- 1-(2,3-Dihydro-1,4-benzodioxine-2-carbonyl)-3-(2,3-dihydro-1-benzofuran-5-yl)pyrrolidine2097920-03-9C21H21NO4
- N-({[2,3'-Bifuran]-5-yl}methyl)-4-phenyloxane-4-carboxamide2097899-72-2C21H21NO4
- (1R,2R)-3-Cyclopropyl-2-(4-methoxyphenyl)-4-oxo-2,3,4,5-tetrahydro-1H-3-benzazepine-1-carboxylic acid2202285-19-4C21H21NO4
- 2-[1-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)cyclopropyl]propanoic acid2138353-62-3C21H21NO4
- 3-(4-Isopropyl-3,5-dimethoxyphenyl)isoquinoline-6-carboxylic acid2758683-63-3C21H21NO4
- 2-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]aceticacid,Mixtureofdiastereomers2408963-86-8C21H21NO4
- N-Methyl-N-phenyl-2-[(3,4,8-trimethyl-2-oxo-2H-chromen-7-yl)oxy]acetamide670242-36-1C21H21NO4
- 7-Hydroxy-4-(4-methoxyphenyl)-8-(pyrrolidin-1-ylmethyl)-2H-chromen-2-one858743-15-4C21H21NO4
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 2-(3-(Cyclopentyloxy)-4-methoxybenzyl)isoindoline-1,3-dione, L-Alanine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-N-2-propen-1-yl-, (S)-3-Cyclopropyl-3-(9H-fluoren-9-ylmethoxycarbonylamino)-propionic 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.