Molecular formula
C21H21N5O3
169 compounds have this formula on CompoundList.
- Molar mass
- 391.43g/mol
- Monoisotopic mass
- 391.1644Da
- Atoms
- 50
- Elements
- 4
- Rings plus double bonds
- 14
The formula C21H21N5O3 describes a molecule made of 21 carbon atoms, 21 hydrogen atoms, 5 nitrogen atoms and 3 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 × 2164.44%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 215.41%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 517.89%14.007 × 5 = 70.035 g/mol
- O Oxygen × 312.26%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C21H21N5O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 169 of 169 compounds
(E)-1-(2-Cyanophenyl)-3-(3-(3-ethoxypropyl)-2-oxo-2,3-dihydroquinazolin-4(1H)-ylidene)urea
CAS 941941-29-3C21H21N5O3
![1-(2-Methoxyphenyl)-5-oxo-N-[4-(1H-1,2,4-triazol-1-ylmethyl)phenyl]pyrrolidine-3-carboxamide chemical structure, C21H21N5O3, CAS 1007653-88-4](/s/YCGCVENGDPPCIR-UHFFFAOYSA-N.svg)
1-(2-Methoxyphenyl)-5-oxo-N-[4-(1H-1,2,4-triazol-1-ylmethyl)phenyl]pyrrolidine-3-carboxamide
CAS 1007653-88-4C21H21N5O3
![N-(4-Methoxybenzyl)-4-oxo-8-(p-tolyl)-4,6,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazine-3-carboxamide chemical structure, C21H21N5O3, CAS 946360-61-8](/s/AZVWWNJFLPBSAR-UHFFFAOYSA-N.svg)
N-(4-Methoxybenzyl)-4-oxo-8-(p-tolyl)-4,6,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazine-3-carboxamide
CAS 946360-61-8C21H21N5O3
![N-(2-Methoxybenzyl)-4-oxo-8-(p-tolyl)-4,6,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazine-3-carboxamide chemical structure, C21H21N5O3, CAS 946310-95-8](/s/AIVUPIMNRXBRND-UHFFFAOYSA-N.svg)
N-(2-Methoxybenzyl)-4-oxo-8-(p-tolyl)-4,6,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazine-3-carboxamide
CAS 946310-95-8C21H21N5O3
![N-(3-Methoxybenzyl)-4-oxo-8-(p-tolyl)-4,6,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazine-3-carboxamide chemical structure, C21H21N5O3, CAS 946229-93-2](/s/ZJXOHMGZDBEJAQ-UHFFFAOYSA-N.svg)
N-(3-Methoxybenzyl)-4-oxo-8-(p-tolyl)-4,6,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazine-3-carboxamide
CAS 946229-93-2C21H21N5O3
![N-Benzyl-8-(4-ethoxyphenyl)-4-oxo-4,6,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazine-3-carboxamide chemical structure, C21H21N5O3, CAS 946280-37-1](/s/VNVRLRALBUZBCX-UHFFFAOYSA-N.svg)
N-Benzyl-8-(4-ethoxyphenyl)-4-oxo-4,6,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazine-3-carboxamide
CAS 946280-37-1C21H21N5O3
2-Ethoxy-N-(5-(1-isopropyl-1H-pyrazol-5-yl)-1,3,4-oxadiazol-2-yl)-1-naphthamide
CAS 1171923-37-7C21H21N5O3
1-Methyl-N-(3-(6-morpholinopyridazin-3-yl)phenyl)-2-oxo-1,2-dihydropyridine-3-carboxamide
CAS 1207021-97-3C21H21N5O3
2-Methoxy-N-(3-(6-morpholinopyridazin-3-yl)phenyl)nicotinamide
CAS 1207026-57-0C21H21N5O3
![Methyl 4-methyl-3-({[4-(pyridin-4-yl)-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate chemical structure, C21H21N5O3, CAS 1219544-42-9](/s/UVWFTDWPPKJTJJ-UHFFFAOYSA-N.svg)
Methyl 4-methyl-3-({[4-(pyridin-4-yl)-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate
CAS 1219544-42-9C21H21N5O3
5-(3,5-Dimethoxyphenyl)-3-(5-methyl-1-(4-methylbenzyl)-1H-1,2,3-triazol-4-yl)-1,2,4-oxadiazole
CAS 1251683-74-5C21H21N5O3
![N-Isopropyl-2-(1-oxo-4-(p-tolyloxy)-[1,2,4]triazolo[4,3-a]quinoxalin-2(1H)-yl)acetamide chemical structure, C21H21N5O3, CAS 1189994-69-1](/s/URASZNLEJPCHBA-UHFFFAOYSA-N.svg)
N-Isopropyl-2-(1-oxo-4-(p-tolyloxy)-[1,2,4]triazolo[4,3-a]quinoxalin-2(1H)-yl)acetamide
CAS 1189994-69-1C21H21N5O3
![N,N-Diethyl-2-(1-oxo-4-phenoxy-[1,2,4]triazolo[4,3-a]quinoxalin-2(1H)-yl)acetamide chemical structure, C21H21N5O3, CAS 1216829-42-3](/s/JXKCCQIJGJDLFQ-UHFFFAOYSA-N.svg)
N,N-Diethyl-2-(1-oxo-4-phenoxy-[1,2,4]triazolo[4,3-a]quinoxalin-2(1H)-yl)acetamide
CAS 1216829-42-3C21H21N5O3
![N-(4-Ethoxyphenyl)-2-(1-ethyl-4-oxo-[1,2,4]triazolo[4,3-a]quinoxalin-5(4H)-yl)acetamide chemical structure, C21H21N5O3, CAS 1359065-68-1](/s/DUOGDZSIODWKKN-UHFFFAOYSA-N.svg)
N-(4-Ethoxyphenyl)-2-(1-ethyl-4-oxo-[1,2,4]triazolo[4,3-a]quinoxalin-5(4H)-yl)acetamide
CAS 1359065-68-1C21H21N5O3
N1-(2-cyanophenyl)-N2-((1-isonicotinoylpiperidin-4-yl)methyl)oxalamide
CAS 1448063-56-6C21H21N5O3
![1-(Benzo[d][1,3]dioxol-5-yl)-3-(2-(5-cyclopropyl-3-(pyridin-2-yl)-1H-pyrazol-1-yl)ethyl)urea chemical structure, C21H21N5O3, CAS 1797236-04-4](/s/BVROQEFXXUORGZ-UHFFFAOYSA-N.svg)
1-(Benzo[d][1,3]dioxol-5-yl)-3-(2-(5-cyclopropyl-3-(pyridin-2-yl)-1H-pyrazol-1-yl)ethyl)urea
CAS 1797236-04-4C21H21N5O3
![N-[2-(4-Methoxy-1H-indol-1-yl)ethyl]-3-(4-oxo-4H-pyrido[2,1-c][1,2,4]triazin-3-yl)propanamide chemical structure, C21H21N5O3, CAS 1574515-31-3](/s/GQCONVRCNKZXJZ-UHFFFAOYSA-N.svg)
N-[2-(4-Methoxy-1H-indol-1-yl)ethyl]-3-(4-oxo-4H-pyrido[2,1-c][1,2,4]triazin-3-yl)propanamide
CAS 1574515-31-3C21H21N5O3
![N-[2-(5-Methoxy-1H-indol-3-yl)ethyl]-3-(4-oxo-4H-pyrido[2,1-c][1,2,4]triazin-3-yl)propanamide chemical structure, C21H21N5O3, CAS 1574351-61-3](/s/LABZUPUQEZDERZ-UHFFFAOYSA-N.svg)
N-[2-(5-Methoxy-1H-indol-3-yl)ethyl]-3-(4-oxo-4H-pyrido[2,1-c][1,2,4]triazin-3-yl)propanamide
CAS 1574351-61-3C21H21N5O3
![(E)-3-(Benzo[d][1,3]dioxol-5-yl)-N-((1-(3-cyanopyrazin-2-yl)piperidin-4-yl)methyl)acrylamide chemical structure, C21H21N5O3, CAS 1798398-18-1](/s/MWDKPXRBXNPSQH-DUXPYHPUSA-N.svg)
(E)-3-(Benzo[d][1,3]dioxol-5-yl)-N-((1-(3-cyanopyrazin-2-yl)piperidin-4-yl)methyl)acrylamide
CAS 1798398-18-1C21H21N5O3
![N-(4-{3-[4-(Phenoxymethyl)-1H-1,2,3-triazol-1-yl]azetidine-1-carbonyl}phenyl)acetamide chemical structure, C21H21N5O3, CAS 2034340-54-8](/s/KKMRSLYJVXSJQP-UHFFFAOYSA-N.svg)
N-(4-{3-[4-(Phenoxymethyl)-1H-1,2,3-triazol-1-yl]azetidine-1-carbonyl}phenyl)acetamide
CAS 2034340-54-8C21H21N5O3
2-((1-(2-(2-Oxo-3-phenylimidazolidin-1-yl)acetyl)pyrrolidin-3-yl)oxy)isonicotinonitrile
CAS 1904028-51-8C21H21N5O3
N-((3-(6-Ethoxypyridin-3-yl)-1,2,4-oxadiazol-5-yl)methyl)-3-(1H-indol-3-yl)propanamide
CAS 1903394-58-0C21H21N5O3
N-(2-(4-Cyclopropyl-6-oxopyrimidin-1(6H)-yl)ethyl)-2-(6-oxo-4-phenylpyrimidin-1(6H)-yl)acetamide
CAS 2034536-76-8C21H21N5O3
4-Methoxy-1-phenyl-5-(4-(pyrimidin-2-yl)piperazine-1-carbonyl)pyridin-2(1H)-one
CAS 2034278-35-6C21H21N5O3
- 3-(2-(3-(1,2,4-Oxadiazol-3-yl)-4-phenylpyrrolidin-1-yl)-2-oxoethyl)-6-cyclopropylpyrimidin-4(3H)-one2034417-39-3C21H21N5O3
- N-(2-(4-(Furan-2-yl)-1H-pyrazol-1-yl)ethyl)-3-(3-methoxyphenyl)-1-methyl-1H-pyrazole-5-carboxamide2034352-00-4C21H21N5O3
- N-(2-(1-Methyl-7-oxo-1H-pyrrolo[2,3-c]pyridin-6(7H)-yl)ethyl)-3-(4-oxoquinazolin-3(4H)-yl)propanamide2034378-01-1C21H21N5O3
- 2-(2-(4-(6-Cyclopropylpyridazin-3-yl)piperazin-1-yl)-2-oxoethyl)isoindoline-1,3-dione2034233-73-1C21H21N5O3
- N-{2-[4-(Furan-3-yl)-1H-pyrazol-1-yl]ethyl}-3-(3-methoxyphenyl)-1-methyl-1H-pyrazole-5-carboxamide2034291-85-3C21H21N5O3
- N-(2-(3-Cyclopropyl-6-oxopyridazin-1(6H)-yl)ethyl)-2-(6-oxo-3-phenylpyridazin-1(6H)-yl)acetamide2034266-93-6C21H21N5O3
- 2-(3-Cyclopropyl-6-oxopyridazin-1(6H)-yl)-N-(2-(1-methyl-6-oxo-1,6-dihydropyridazin-3-yl)phenyl)propanamide2034233-22-0C21H21N5O3
- N-((6-Cyclopropylpyrimidin-4-yl)methyl)-2-(4-(4-methoxyphenyl)-6-oxopyrimidin-1(6H)-yl)acetamide2176070-28-1C21H21N5O3
- N-(6-(Benzyloxy)pyrimidin-4-yl)-2-(3-cyclopropyl-6-oxopyridazin-1(6H)-yl)propanamide2097933-57-6C21H21N5O3
- N-(3-Cyclopropyl-1-(4-oxo-4,5,6,7-tetrahydro-3H-cyclopenta[d]pyrimidin-2-yl)-1H-pyrazol-5-yl)-2-phenoxyacetamide1207057-11-1C21H21N5O3
- DABCYL C2 maleimide1419639-70-5C21H21N5O3
- N-(4-((4-(Dimethylamino)-6-methylpyrimidin-2-yl)amino)phenyl)benzo[d][1,3]dioxole-5-carboxamide941876-46-6C21H21N5O3
- N-(3,5-Dimethylphenyl)-2-(3,4-dioxo-8-phenyl-3,4,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazin-2(6H)-yl)acetamide941887-01-0C21H21N5O3
- 2-(3,4-Dioxo-8-phenyl-3,4,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazin-2(6H)-yl)-N-(4-ethylphenyl)acetamide941975-64-0C21H21N5O3
- 2-(3,4-Dioxo-8-phenyl-3,4,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazin-2(6H)-yl)-N-phenethylacetamide942011-72-5C21H21N5O3
- 2-(3,4-Dioxo-8-phenyl-3,4,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazin-2(6H)-yl)-N-(4-methylbenzyl)acetamide941975-91-3C21H21N5O3
- 2-(3,4-Dioxo-8-(p-tolyl)-3,4,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazin-2(6H)-yl)-N-(m-tolyl)acetamide941960-26-5C21H21N5O3
- 2-(3,4-Dioxo-8-(p-tolyl)-3,4,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazin-2(6H)-yl)-N-(p-tolyl)acetamide941996-78-7C21H21N5O3
- N-Benzyl-2-(3,4-dioxo-8-(p-tolyl)-3,4,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazin-2(6H)-yl)acetamide941960-50-5C21H21N5O3
- 1-(4-Methoxyphenyl)-6-[4-(methylamino)phenyl]-7-oxo-1H,4H,5H,6H,7H-pyrazolo[3,4-c]pyridine-3-carboxamide959426-81-4C21H21N5O3
- 2-[4-(1H-Indol-2-ylcarbonyl)piperazin-1-yl]-2-oxo-N-(pyridin-3-ylmethyl)acetamide1040713-05-0C21H21N5O3
- N-(3,4-Dimethoxyphenyl)-3-(3-ethyl-1,2,4-oxadiazol-5-yl)-7-methyl-1,8-naphthyridin-4-amine1251626-51-3C21H21N5O3
- 4-[3-(3-Methoxyphenyl)-1-methyl-1H-pyrazole-5-carbonyl]-1-(pyridin-3-yl)piperazin-2-one2097862-34-3C21H21N5O3
- 5-Amino-1-benzyl-3-methyl-N-[4-(4-oxoazetidin-2-yl)oxyphenyl]pyrazole-4-carboxamide2361727-54-8C21H21N5O3
- 2-{[1-(2-Methoxypyridine-3-carbonyl)piperidin-4-yl]oxy}-5-(pyridin-4-yl)pyrimidine2549014-39-1C21H21N5O3
- Benzoic acid, 2-[2-[4-(dimethylamino)phenyl]diazenyl]-, 4-amino-3-cyano-2-oxo-3-penten-1-yl ester732294-43-8C21H21N5O3
- 1-(3-Methoxypropyl)-9-methyl-4-oxo-N-(pyridin-3-yl)-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide900898-83-1C21H21N5O3
- Acetic acid, (p-((3-methyl-5-oxo-2-pyrazolin-4-ylidene)methyl)phenoxy)-, (4-amino-alpha-methylbenzylidene)hydrazide107045-04-5C21H21N5O3
- 1-Imidazolidineacetamide, 4-cyclopropyl-4-methyl-2,5-dioxo-N-[4-[(1E)-2-phenyldiazenyl]phenyl]-1134741-46-0C21H21N5O3
- 3-Cyclobutyl-4-(3-oxo-1-piperazinyl)-1-phenyl-1H-pyrazolo[3,4-b]pyridine-6-carboxylic acid2095093-57-3C21H21N5O3
- Methyl 3-((E)-((1R,5R)-8-oxo-1,5,6,8-tetrahydro-2H-1,5-methanopyrido[1,2-a][1,5]diazocin-3(4H)-yl)diazenyl)-1H-indole-2-carboxylate895908-81-3C21H21N5O3
- 6-Phenyl-2-{1-[2-(pyridazin-3-yloxy)acetyl]piperidin-4-yl}-2,3-dihydropyridazin-3-one2380059-18-5C21H21N5O3
- 3-(2-{3-[(3-Cyclopropyl-6-oxo-1,6-dihydropyridazin-1-yl)methyl]azetidin-1-yl}-2-oxoethyl)-3,4-dihydroquinazolin-4-one2310125-26-7C21H21N5O3
- 2-{1-[2-(4,5-Dimethyl-6-oxo-1,6-dihydropyrimidin-1-yl)acetyl]azetidin-3-yl}-6-phenyl-2,3-dihydropyridazin-3-one2380085-34-5C21H21N5O3
- 1-(2-Methoxypyridin-4-yl)-4-(5-methyl-1-phenyl-1H-pyrazole-4-carbonyl)piperazin-2-one2380186-97-8C21H21N5O3
- N-(4-Methoxyphenyl)-2-{5-oxo-2-propyl-5H,6H-[1,2,4]triazolo[1,5-c]quinazolin-6-yl}acetamide2380185-37-3C21H21N5O3
- 3-Methyl-6-[5-(quinoline-6-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]-1,2,3,4-tetrahydropyrimidine-2,4-dione2415524-36-4C21H21N5O3
- 3-Methyl-6-[5-(quinoline-2-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]-1,2,3,4-tetrahydropyrimidine-2,4-dione2415511-10-1C21H21N5O3
- 2-Methyl-6-(3-{[(6-phenylpyridazin-3-yl)oxy]methyl}pyrrolidine-1-carbonyl)-2,3-dihydropyridazin-3-one2548995-99-7C21H21N5O3
- 5-[4-(2-Methoxypyridine-3-carbonyl)piperazin-1-yl]-6-phenyl-2,3-dihydropyridazin-3-one2548984-28-5C21H21N5O3
- 5-[4-(6-Methoxypyridine-3-carbonyl)piperazin-1-yl]-6-phenyl-2,3-dihydropyridazin-3-one2548988-72-1C21H21N5O3
- 1-Methyl-3-(4-{[5-(pyridin-4-yl)pyrimidin-2-yl]oxy}piperidine-1-carbonyl)-1,2-dihydropyridin-2-one2549007-98-7C21H21N5O3
- (9H-Fluoren-9-yl)methyl 4-hydroxy-4-(1H-1,2,3,4-tetrazol-5-yl)piperidine-1-carboxylate2764016-10-4C21H21N5O3
- (9H-Fluoren-9-yl)methyl 3-hydroxy-3-(1H-1,2,3,4-tetrazol-5-yl)piperidine-1-carboxylate2770486-54-7C21H21N5O3
- N-{2-[(4-Morpholinylacetyl)amino]phenyl}-6-quinoxalinecarboxamide603093-69-2C21H21N5O3
Frequently asked questions
What is the molar mass of C21H21N5O3?
The molar mass of C21H21N5O3 is 391.43 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 5 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 391.1644 Da.
How many compounds have the formula C21H21N5O3?
CompoundList lists 169 compounds with the molecular formula C21H21N5O3, including (E)-1-(2-Cyanophenyl)-3-(3-(3-ethoxypropyl)-2-oxo-2,3-dihydroquinazolin-4(1H)-ylidene)urea, 1-(2-Methoxyphenyl)-5-oxo-N-[4-(1H-1,2,4-triazol-1-ylmethyl)phenyl]pyrrolidine-3-carboxamide, N-(4-Methoxybenzyl)-4-oxo-8-(p-tolyl)-4,6,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazine-3-carboxamide. 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 C21H21N5O3?
C21H21N5O3 has a degree of unsaturation of 14. 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.