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 1 to 100 of 349 compounds
CP-373420
CAS 183321-86-0C21H21N3O4
![6-[2-Amino-5-(4-methoxyphenoxy)-1H-pyrimidin-6-ylidene]-3-(2-methylprop-2-enoxy)-1-cyclohexa-2,4-dienone chemical structure, C21H21N3O4, CAS 850189-54-7](/s/DCWVJNHRWVAOOD-UHFFFAOYSA-N.svg)
6-[2-Amino-5-(4-methoxyphenoxy)-1H-pyrimidin-6-ylidene]-3-(2-methylprop-2-enoxy)-1-cyclohexa-2,4-dienone
CAS 850189-54-7C21H21N3O4
![2-[2-[4-(2-Methoxyphenyl)piperazin-1-yl]-2-oxoethyl]isoindole-1,3-dione chemical structure, C21H21N3O4, CAS 342779-89-9](/s/NYMSIFVFZNGDCA-UHFFFAOYSA-N.svg)
2-[2-[4-(2-Methoxyphenyl)piperazin-1-yl]-2-oxoethyl]isoindole-1,3-dione
CAS 342779-89-9C21H21N3O4
4-(4-Cyano-2-methoxyphenyl)-5-ethoxy-1,4-dihydro-2,8-dimethyl-1,6-naphthyridine-3-carboxylic acid
CAS 1050477-45-6C21H21N3O4
![1-[1-(4-Methoxyphenyl)-2,5-dioxopyrrolidin-3-yl]-3-phenyl-1-prop-2-enylurea chemical structure, C21H21N3O4, CAS 1008859-82-2](/s/APEVFNQFRMNSSB-UHFFFAOYSA-N.svg)
1-[1-(4-Methoxyphenyl)-2,5-dioxopyrrolidin-3-yl]-3-phenyl-1-prop-2-enylurea
CAS 1008859-82-2C21H21N3O4
2-(4-(3-Methoxyphenyl)-2,3-dioxo-3,4-dihydropyrazin-1(2H)-yl)-N-phenethylacetamide
CAS 891867-34-8C21H21N3O4
4-Nitro-N-(2-phenyl-1-(piperidine-1-carbonyl)-vinyl)-benzamide
CAS 297146-14-6C21H21N3O4
![2-{[(1,3-Dioxo-1,3-dihydro-2H-isoindol-2-yl)acetyl]amino}-N,N-diethylbenzamide chemical structure, C21H21N3O4, CAS 325831-50-3](/s/KBUZSRQDQPRMPA-UHFFFAOYSA-N.svg)
2-{[(1,3-Dioxo-1,3-dihydro-2H-isoindol-2-yl)acetyl]amino}-N,N-diethylbenzamide
CAS 325831-50-3C21H21N3O4
2-(2-Amino-5-(2-methoxyphenoxy)pyrimidin-4-yl)-5-((2-methylallyl)oxy)phenol
CAS 877803-19-5C21H21N3O4
![N-(Furan-2-ylmethyl)-2-oxo-2-[1-(2-oxo-2-pyrrolidin-1-ylethyl)indol-3-yl]acetamide chemical structure, C21H21N3O4, CAS 872849-15-5](/s/BPKTUHBKCWYJEF-UHFFFAOYSA-N.svg)
N-(Furan-2-ylmethyl)-2-oxo-2-[1-(2-oxo-2-pyrrolidin-1-ylethyl)indol-3-yl]acetamide
CAS 872849-15-5C21H21N3O4
![5-[(3-Acetylphenoxy)methyl]-N-methyl-N-[(1S)-1-pyridin-2-ylethyl]-1,2-oxazole-3-carboxamide chemical structure, C21H21N3O4, CAS 1623481-80-0](/s/JMYDHMCYZKRDPD-AWEZNQCLSA-N.svg)
5-[(3-Acetylphenoxy)methyl]-N-methyl-N-[(1S)-1-pyridin-2-ylethyl]-1,2-oxazole-3-carboxamide
CAS 1623481-80-0C21H21N3O4
1-(1,3-Benzodioxol-5-yl)-3-(4-phenylpiperazin-1-yl)pyrrolidine-2,5-dione
CAS 669719-11-3C21H21N3O4
4-Hydroxy-2-oxo-N'-(phenylacetyl)-1-propyl-1,2-dihydro-3-quinolinecarbohydrazide
CAS 353252-99-0C21H21N3O4
![N-[(6-Methyl-2-oxo-1H-quinolin-3-yl)methyl]-3-nitro-N-propan-2-ylbenzamide chemical structure, C21H21N3O4, CAS 714253-11-9](/s/PIKLPBRBIBIMMY-UHFFFAOYSA-N.svg)
N-[(6-Methyl-2-oxo-1H-quinolin-3-yl)methyl]-3-nitro-N-propan-2-ylbenzamide
CAS 714253-11-9C21H21N3O4
![[2-Oxo-2-(4-propan-2-ylanilino)ethyl] 3-methyl-4-oxophthalazine-1-carboxylate chemical structure, C21H21N3O4, CAS 742112-70-5](/s/MMFQUGYWWSXKQU-UHFFFAOYSA-N.svg)
[2-Oxo-2-(4-propan-2-ylanilino)ethyl] 3-methyl-4-oxophthalazine-1-carboxylate
CAS 742112-70-5C21H21N3O4
![N-tert-Butyl-3-nitro-N-[(2-oxo-1H-quinolin-3-yl)methyl]benzamide chemical structure, C21H21N3O4, CAS 672921-02-7](/s/WZOCDZHRDVGBEN-UHFFFAOYSA-N.svg)
N-tert-Butyl-3-nitro-N-[(2-oxo-1H-quinolin-3-yl)methyl]benzamide
CAS 672921-02-7C21H21N3O4
N-(2-(6,7-Dimethyl-2-oxo-1,2-dihydroquinolin-3-yl)ethyl)-4-methyl-3-nitrobenzamide
CAS 851403-07-1C21H21N3O4
2-((3,4-Dimethylphenyl)amino)-2-oxoethyl 4-methoxy-1-phenyl-1H-pyrazole-3-carboxylate
CAS 956910-38-6C21H21N3O4
![N-tert-Butyl-N-[(3-phenyl-1,2,4-oxadiazol-5-yl)methyl]-1,3-benzodioxole-5-carboxamide chemical structure, C21H21N3O4, CAS 887597-73-1](/s/VVEPCFJZAIRWSA-UHFFFAOYSA-N.svg)
N-tert-Butyl-N-[(3-phenyl-1,2,4-oxadiazol-5-yl)methyl]-1,3-benzodioxole-5-carboxamide
CAS 887597-73-1C21H21N3O4
![2-[3-(4-Methoxyphenyl)-1,2,4-oxadiazol-5-yl]-N-(oxolan-2-ylmethyl)benzamide chemical structure, C21H21N3O4, CAS 877790-36-8](/s/IDVNOYKMTJFGDT-UHFFFAOYSA-N.svg)
2-[3-(4-Methoxyphenyl)-1,2,4-oxadiazol-5-yl]-N-(oxolan-2-ylmethyl)benzamide
CAS 877790-36-8C21H21N3O4
![N-[2-(7,8-Dimethyl-2-oxo-1H-quinolin-3-yl)ethyl]-4-methyl-3-nitrobenzamide chemical structure, C21H21N3O4, CAS 851408-10-1](/s/JFEBIBXXRVFSDP-UHFFFAOYSA-N.svg)
N-[2-(7,8-Dimethyl-2-oxo-1H-quinolin-3-yl)ethyl]-4-methyl-3-nitrobenzamide
CAS 851408-10-1C21H21N3O4
![(E)-4-[3-(4-Methoxyphenyl)-5-(3-nitrophenyl)-3,4-dihydropyrazol-2-yl]pent-3-en-2-one chemical structure, C21H21N3O4, CAS 331839-35-1](/s/BAYOSZTXLRQJFP-SDNWHVSQSA-N.svg)
(E)-4-[3-(4-Methoxyphenyl)-5-(3-nitrophenyl)-3,4-dihydropyrazol-2-yl]pent-3-en-2-one
CAS 331839-35-1C21H21N3O4
![N-[2-(2,3-Dihydro-1,4-benzodioxin-6-yl)ethyl]-3-ethyl-4-oxophthalazine-1-carboxamide chemical structure, C21H21N3O4, CAS 853340-63-3](/s/UHVFXSCUAIQXOG-UHFFFAOYSA-N.svg)
N-[2-(2,3-Dihydro-1,4-benzodioxin-6-yl)ethyl]-3-ethyl-4-oxophthalazine-1-carboxamide
CAS 853340-63-3C21H21N3O4
![[(3-Methylphenyl)carbamoyl]methyl 1-ethyl-7-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylate chemical structure, C21H21N3O4, CAS 892308-34-8](/s/YYAQCAFVLSEWGB-UHFFFAOYSA-N.svg)
[(3-Methylphenyl)carbamoyl]methyl 1-ethyl-7-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylate
CAS 892308-34-8C21H21N3O4
- 4-Hydroxy-N'-(4-methylbenzoyl)-2-oxo-1-propyl-1,2-dihydro-3-quinolinecarbohydrazide371227-21-3C21H21N3O4
- 2-[[4-(1,3-Benzodioxol-5-ylmethyl)piperazin-1-yl]methyl]isoindole-1,3-dione296792-73-9C21H21N3O4
- 1-[2-(Cyclohexen-1-yl)ethyl]-3-[2-(1H-indol-3-yl)-2-oxoethyl]imidazolidine-2,4,5-trione923904-91-0C21H21N3O4
- 1-{[4-(1,3-Benzodioxol-5-ylmethyl)piperazin-1-yl]methyl}-1H-indole-2,3-dione296792-72-8C21H21N3O4
- N-(4-Acetamidophenyl)-4-[(3,5-dimethyl-1,2-oxazol-4-yl)methoxy]benzamide794557-62-3C21H21N3O4
- 3-{3-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-3H-diazirin-3-yl}propanoic acid2580189-70-2C21H21N3O4
- 2-(5-((4-Methoxyphenoxy)methyl)furan-2-yl)-5-(piperidin-1-yl)oxazole-4-carbonitrile941929-27-7C21H21N3O4
- 2-(4-(2-Amino-2-oxoethoxy)-1-benzyl-2-ethyl-1H-indol-3-yl)-2-oxoacetamide185298-58-2C21H21N3O4
- Butyl 4-(7-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxamido)benzoate877649-92-8C21H21N3O4
- CP-373413183320-29-8C21H21N3O4
- 1-(2-Deoxyribofuranosyl)-4-(3-benzamido)phenylimidazole143632-16-0C21H21N3O4
- 1-[8-Methoxy-3-(3-nitrophenyl)-3,3a,4,5-tetrahydrobenzo[g]indazol-2-yl]propan-1-one312733-83-8C21H21N3O4
- N-(2,4-Dimethylphenyl)-2-[4-(4-methoxyphenyl)-2,3-dioxopyrazin-1-yl]acetamide891867-14-4C21H21N3O4
- 2-(4-(3-Methoxyphenyl)-2,3-dioxo-3,4-dihydropyrazin-1(2H)-yl)-N-(4-methylbenzyl)acetamide891867-52-0C21H21N3O4
- 2-[(4-Methoxyphenoxy)methyl]-5-{[2-(4-methoxyphenyl)ethyl]amino}-1,3-oxazole-4-carbonitrile606948-62-3C21H21N3O4
- 5-{[2-(3,4-Dimethoxyphenyl)ethyl]amino}-2-(phenoxymethyl)-1,3-oxazole-4-carbonitrile606946-80-9C21H21N3O4
- N-(4-Ethylphenyl)-2-[4-(4-methoxyphenyl)-2,3-dioxopyrazin-1-yl]acetamide891867-00-8C21H21N3O4
- 3-(2-(Indolin-1-yl)-2-oxoethyl)-5-(4-methoxyphenyl)-5-methylimidazolidine-2,4-dione1052561-14-4C21H21N3O4
- Methyl 5-((2-(5-isobutyl-1,3,4-oxadiazol-2-yl)-1H-indol-1-yl)methyl)furan-2-carboxylate921843-50-7C21H21N3O4
- 4-(2,2-Diphenylhydrazinyl)-2-(furan-2-ylmethylamino)-4-oxobutanoic acid1025759-41-4C21H21N3O4
- N-(4-(2-((2-Methoxyethyl)amino)-2-oxoethyl)phenyl)-5-phenylisoxazole-3-carboxamide1207022-64-7C21H21N3O4
- 2,3-Dimethoxy-N-methyl-N-(4-((6-methylpyridazin-3-yl)oxy)phenyl)benzamide1206997-93-4C21H21N3O4
- N-(1-(2-Hydroxyethyl)-3-phenyl-1H-pyrazol-5-yl)-3-methyl-2,3-dihydrobenzo[b][1,4]dioxine-2-carboxamide1226443-05-5C21H21N3O4
- N-(3,4-Dimethoxyphenethyl)-3-(pyrimidin-2-yloxy)benzamide1251574-09-0C21H21N3O4
- N-[3-(6-Ethoxypyridazin-3-yl)phenyl]-2,6-dimethoxybenzamide899746-89-5C21H21N3O4
- (2S)-2-[[(2S)-2-[(2-Cyanoacetyl)amino]-3-phenylpropanoyl]amino]-3-phenylpropanoic acid144085-32-5C21H21N3O4
- 5-(((Tetrahydrofuran-2-yl)methyl)amino)-2-(5-((m-tolyloxy)methyl)furan-2-yl)oxazole-4-carbonitrile941903-89-5C21H21N3O4
- 2,3-Dimethoxy-N-[5-(6-methoxypyridazin-3-yl)-2-methylphenyl]benzamide1021081-60-6C21H21N3O4
- 3,5-Dimethoxy-N-[5-(6-methoxypyridazin-3-yl)-2-methylphenyl]benzamide1021081-69-5C21H21N3O4
- 2,6-Dimethoxy-N-[5-(6-methoxypyridazin-3-yl)-2-methylphenyl]benzamide1021050-59-8C21H21N3O4
- 2-(3-Cyano-7,7-dimethyl-2,5-dioxo-5,6,7,8-tetrahydroquinolin-1(2H)-yl)-N-(2-methoxyphenyl)acetamide1021227-74-6C21H21N3O4
- 3-(3,4-Dimethylphenyl)-N-(2-methoxy-5-methylphenyl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxamide887898-28-4C21H21N3O4
- Z-His(bzl)-OH21929-66-8C21H21N3O4
- 2-(3,4-Dimethoxyphenyl)-N-[4-(6-methoxypyridazin-3-yl)phenyl]acetamide899986-43-7C21H21N3O4
- (S)-3-(3,4-Dioxo-2-(1-phenylethylamino)cyclobut-1-enylamino)-2-hydroxy-N,N-dimethylbenzamide473725-26-7C21H21N3O4
- Methyl 2-[(E)-2-(dimethylamino)vinyl]-6-(4-methoxyphenyl)-5-oxo-5,6-dihydro-1,6-naphthyridine-3-carboxylate1374510-93-6C21H21N3O4
- L-Phenylalaninamide, glycyl-N-(4-methyl-2-oxo-2H-1-benzopyran-7-yl)-201852-70-2C21H21N3O4
- Methyl 2-{2-[1-(3-methoxyphenyl)-5-oxopyrrolidin-3-yl]benzimidazolyl}acetate912903-10-7C21H21N3O4
- Fmoc-L-Photo-Methionine945859-89-2C21H21N3O4
- 2-[(5-Butoxy-1-phenyl-1H-pyrazole-3-carbonyl)amino]benzoic acid55228-50-7C21H21N3O4
- Kv3 modulator 22101321-76-8C21H21N3O4
- 3-[[2-(1,3-Dioxoisoindol-2-yl)acetyl]amino]-N-(2-methylpropyl)benzamide294891-86-4C21H21N3O4
- Methyl 2-{2-[1-(4-methoxyphenyl)-5-oxopyrrolidin-3-yl]benzimidazolyl}acetate912902-98-8C21H21N3O4
- N-(4-Methoxybenzyl)-2-(3-(2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)acetamide837393-92-7C21H21N3O4
- 2-(2-(Dimethylamino)ethyl)-6-methoxy-1-(pyridin-3-yl)-1,2-dihydrochromeno[2,3-c]pyrrole-3,9-dione886153-29-3C21H21N3O4
- Methyl 4-(3,4-dimethoxyphenyl)-2-methyl-1,4-dihydropyrimido[1,2-a]benzimidazole-3-carboxylate879078-80-5C21H21N3O4
- Ethyl (E)-3-[3-(2-nitrophenyl)-5-phenyl-3,4-dihydropyrazol-2-yl]but-2-enoate326914-51-6C21H21N3O4
- Z-L-Histidine benzyl ester20794-07-4C21H21N3O4
- US12358901, Example RE111380696-69-4C21H21N3O4
- 2-[2-[4-(4-Methoxyphenyl)piperazin-1-yl]-2-oxoethyl]isoindole-1,3-dione450383-43-4C21H21N3O4
- Ethyl (E)-3-[3-(3-nitrophenyl)-5-phenyl-3,4-dihydropyrazol-2-yl]but-2-enoate331839-28-2C21H21N3O4
- 2-[(2-Methoxyphenoxy)methyl]-5-{[2-(4-methoxyphenyl)ethyl]amino}-1,3-oxazole-4-carbonitrile606948-64-5C21H21N3O4
- 2-Methyl-4-[4-(2-morpholin-4-yl-2-oxoethoxy)phenyl]phthalazin-1-one701229-71-2C21H21N3O4
- Ethyl 3-amino-5-(4-methoxyphenyl)-1-(2-phenylacetyl)-1H-pyrazole-4-carboxylate956368-63-1C21H21N3O4
- Acetamide, N-(2-benzoyl-4-nitrophenyl)-2-((1,1-dimethyl-2-propynyl)amino)-N-methyl-80166-45-6C21H21N3O4
- 1,2,4-Triazin-3(2H)-one, 5,6-bis(4-methoxyphenyl)-2-(2-(ethenyloxy)ethyl)-84423-89-2C21H21N3O4
- Acetamide, N-(4-(7-acetyl-8,9-dihydro-8-methyl-7H-1,3-dioxolo(4,5-h)(2,3)benzodiazepin-5-yl)phenyl)-143692-53-9C21H21N3O4
- 2-[2-Amino-5-(3-methoxyphenoxy)pyrimidin-4-yl]-5-[(2-methylprop-2-en-1-yl)oxy]phenol877622-50-9C21H21N3O4
- 2-(2-(Dimethylamino)ethyl)-6-methoxy-1-(pyridin-2-yl)-1,2-dihydrochromeno[2,3-c]pyrrole-3,9-dione886153-22-6C21H21N3O4
- 2-(2-(Dimethylamino)ethyl)-6-methoxy-1-(pyridin-4-yl)-1,2-dihydrochromeno[2,3-c]pyrrole-3,9-dione886153-36-2C21H21N3O4
- 6-(4-Hydroxy-3-nitrophenyl)-9,9-dimethyl-6,8,10,11-tetrahydro-5H-benzo[b][1,4]benzodiazepin-7-one886650-42-6C21H21N3O4
- N-Benzyl-2-(3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl)acetamide942007-52-5C21H21N3O4
- N-(2-Methoxybenzyl)-2-(3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)acetamide899946-61-3C21H21N3O4
- 4-[4-(Benzyloxy)phenyl]-6-(2-hydroxyethyl)-1H,2H,3H,4H,5H,6H,7H-pyrrolo[3,4-d]pyrimidine-2,5-dione874622-90-9C21H21N3O4
- 1-Butyl-N-(2-carbamoylphenyl)-4-hydroxy-2-oxo-1,2-dihydroquinoline-3-carboxamide303798-40-5C21H21N3O4
- 1-Nitro-2-(4-tertbutoxycarbonylaminophenyl)aminonaphthalene1356863-56-3C21H21N3O4
- Methyl 4-({(1Z)-1-[1-(4-methoxyphenyl)-3-methyl-5-oxo-1,5-dihydro-4H-pyrazol-4-ylidene]ethyl}amino)benzoate884421-33-4C21H21N3O4
- 4-(6-(Azetidin-1-yl)-2-methyl-1-oxo-1,2-dihydro-2,7-naphthyridin-4-yl)-2,6-dimethoxybenzaldehyde2460248-49-9C21H21N3O4
- 1 suppliers(S)-4-(4-Cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1,6-naphthyridine-3-carboxylic Acid2640506-74-5C21H21N3O4
- Orb31347933029550-24-8C21H21N3O4
- Ethyl 3-{[(1-ethyl-7-methyl-4-oxo-1,4-dihydro-1,8-naphthyridin-3-yl)carbonyl]amino}benzoate460737-06-8C21H21N3O4
- N-(2-Methylpropyl)-3-nitro-N-[(2-oxo-1H-quinolin-3-yl)methyl]benzamide838874-41-2C21H21N3O4
- 5-(4-Dimethylamino-benzylidene)-1-(4-ethoxy-phenyl)-pyrimidine-2,4,6-trione312591-99-4C21H21N3O4
- 4-[2,5-Dioxo-3-(4-phenylpiperazin-1-yl)pyrrolidin-1-yl]benzoic acid333398-71-3C21H21N3O4
- 1-[7-Methoxy-3-(4-nitrophenyl)-3,3a,4,5-tetrahydrobenzo[g]indazol-2-yl]propan-1-one312615-90-0C21H21N3O4
- 3-{3-Nitrophenyl}-7-methoxy-2-propionyl-3,3a,4,5-tetrahydro-2H-benzo[g]indazole5610-16-2C21H21N3O4
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 CP-373420, 6-[2-Amino-5-(4-methoxyphenoxy)-1H-pyrimidin-6-ylidene]-3-(2-methylprop-2-enoxy)-1-cyclohexa-2,4-dienone, 2-[2-[4-(2-Methoxyphenyl)piperazin-1-yl]-2-oxoethyl]isoindole-1,3-dione. 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.