Molecular formula
C21H19N5O3
176 compounds have this formula on CompoundList.
- Molar mass
- 389.42g/mol
- Monoisotopic mass
- 389.1488Da
- Atoms
- 48
- Elements
- 4
- Rings plus double bonds
- 15
The formula C21H19N5O3 describes a molecule made of 21 carbon atoms, 19 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 × 2164.77%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 194.92%1.008 × 19 = 19.152 g/mol
- N Nitrogen × 517.98%14.007 × 5 = 70.035 g/mol
- O Oxygen × 312.33%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C21H19N5O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 176 of 176 compounds
![N-(4-Ethoxyphenyl)-2-(3-oxo-6-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-2(3H)-yl)acetamide chemical structure, C21H19N5O3, CAS 1251593-73-3](/s/AZKQGMJJDOFIIM-UHFFFAOYSA-N.svg)
N-(4-Ethoxyphenyl)-2-(3-oxo-6-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-2(3H)-yl)acetamide
CAS 1251593-73-3C21H19N5O3
N-Methyl-N-(2-oxo-2-(((3-phenyl-1,2,4-oxadiazol-5-yl)methyl)amino)ethyl)-1H-indole-3-carboxamide
CAS 1251684-18-0C21H19N5O3
1-Ethyl-7-methyl-4-oxo-N-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-1,4-dihydro-1,8-naphthyridine-3-carboxamide
CAS 1226449-80-4C21H19N5O3
![N-[4-Oxo-3-(propan-2-yl)-3,4-dihydroquinazolin-6-yl]-2-(4-oxoquinazolin-3(4H)-yl)acetamide chemical structure, C21H19N5O3, CAS 1574363-33-9](/s/RPFXCOFJHQAPMC-UHFFFAOYSA-N.svg)
N-[4-Oxo-3-(propan-2-yl)-3,4-dihydroquinazolin-6-yl]-2-(4-oxoquinazolin-3(4H)-yl)acetamide
CAS 1574363-33-9C21H19N5O3
![6-(1-(Benzo[d]oxazol-2-yl)pyrrolidine-2-carbonyl)-2-oxo-1,2,5,6,7,8-hexahydro-1,6-naphthyridine-3-carbonitrile chemical structure, C21H19N5O3, CAS 2034206-84-1](/s/RAOVJIVYBZLYBP-UHFFFAOYSA-N.svg)
6-(1-(Benzo[d]oxazol-2-yl)pyrrolidine-2-carbonyl)-2-oxo-1,2,5,6,7,8-hexahydro-1,6-naphthyridine-3-carbonitrile
CAS 2034206-84-1C21H19N5O3
N-(3-(Furan-2-yl)-1-(4-methyl-6-oxo-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-5-yl)-3-phenylpropanamide
CAS 1207016-73-6C21H19N5O3
N-(3-Cyclopropyl-1-(4-ethyl-6-oxo-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-5-yl)benzofuran-2-carboxamide
CAS 1207053-25-5C21H19N5O3
3-(5-(1-(2-(1-Methyl-1H-indol-3-yl)acetyl)azetidin-3-yl)-1,2,4-oxadiazol-3-yl)pyridin-2(1H)-one
CAS 1396871-54-7C21H19N5O3
![N-(2-Ethoxyphenyl)-2-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide chemical structure, C21H19N5O3, CAS 852440-14-3](/s/LEHSGWXHCXQCNT-UHFFFAOYSA-N.svg)
N-(2-Ethoxyphenyl)-2-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide
CAS 852440-14-3C21H19N5O3
![N-(3-Methoxyphenyl)-2-[1-(4-methylphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]acetamide chemical structure, C21H19N5O3, CAS 863446-61-1](/s/TYOJEERSFIIXKZ-UHFFFAOYSA-N.svg)
N-(3-Methoxyphenyl)-2-[1-(4-methylphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]acetamide
CAS 863446-61-1C21H19N5O3
![N-(4-Methoxyphenyl)-2-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide chemical structure, C21H19N5O3, CAS 863446-62-2](/s/VKKGZRMBIJOEIO-UHFFFAOYSA-N.svg)
N-(4-Methoxyphenyl)-2-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide
CAS 863446-62-2C21H19N5O3
![N-(2-Methoxyphenyl)-2-[1-(2-methylphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]acetamide chemical structure, C21H19N5O3, CAS 895009-90-2](/s/WFBNYXAPDYAVKL-UHFFFAOYSA-N.svg)
N-(2-Methoxyphenyl)-2-[1-(2-methylphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]acetamide
CAS 895009-90-2C21H19N5O3
![N-(4-Methoxyphenyl)-2-[1-(2-methylphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]acetamide chemical structure, C21H19N5O3, CAS 895010-02-3](/s/DZLWJGDLEGQBEB-UHFFFAOYSA-N.svg)
N-(4-Methoxyphenyl)-2-[1-(2-methylphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]acetamide
CAS 895010-02-3C21H19N5O3
9-(3,4-Dimethylphenyl)-2-(2-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide
CAS 898422-38-3C21H19N5O3
9-(3,4-Dimethylphenyl)-2-(3-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide
CAS 898442-73-4C21H19N5O3
9-(3,4-Dimethylphenyl)-2-(4-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide
CAS 898446-92-9C21H19N5O3
2-Nitro-N-(3-(6-(pyrrolidin-1-yl)pyridazin-3-yl)phenyl)benzamide
CAS 922688-19-5C21H19N5O3
3-Nitro-N-(3-(6-(pyrrolidin-1-yl)pyridazin-3-yl)phenyl)benzamide
CAS 899985-83-2C21H19N5O3
![8-(3,5-Dimethylphenyl)-7-(furan-2-yl)-1,3-dimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione chemical structure, C21H19N5O3, CAS 924824-41-9](/s/LYYBSNJUMUHVQM-UHFFFAOYSA-N.svg)
8-(3,5-Dimethylphenyl)-7-(furan-2-yl)-1,3-dimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione
CAS 924824-41-9C21H19N5O3
![N-{[1-(4-Methoxyphenyl)-1H-1,2,3,4-tetrazol-5-yl]methyl}-2-(naphthalen-2-yloxy)acetamide chemical structure, C21H19N5O3, CAS 897614-82-3](/s/XGMUULOOWWVBBB-UHFFFAOYSA-N.svg)
N-{[1-(4-Methoxyphenyl)-1H-1,2,3,4-tetrazol-5-yl]methyl}-2-(naphthalen-2-yloxy)acetamide
CAS 897614-82-3C21H19N5O3
![2-Ethoxy-N-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)benzamide chemical structure, C21H19N5O3, CAS 900007-85-4](/s/ODPLUZWIOIYHMW-UHFFFAOYSA-N.svg)
2-Ethoxy-N-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)benzamide
CAS 900007-85-4C21H19N5O3
![4-Ethoxy-N-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)benzamide chemical structure, C21H19N5O3, CAS 899737-12-3](/s/XLQNMTIAHOVETM-UHFFFAOYSA-N.svg)
4-Ethoxy-N-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)benzamide
CAS 899737-12-3C21H19N5O3
![2-(4-Methoxyphenyl)-N-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide chemical structure, C21H19N5O3, CAS 900008-21-1](/s/FORAPRCIEUJQIA-UHFFFAOYSA-N.svg)
2-(4-Methoxyphenyl)-N-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide
CAS 900008-21-1C21H19N5O3
![N-(1-(3,4-Dimethylphenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-3-methoxybenzamide chemical structure, C21H19N5O3, CAS 900008-76-6](/s/WWKNGSPVSCCDLE-UHFFFAOYSA-N.svg)
N-(1-(3,4-Dimethylphenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-3-methoxybenzamide
CAS 900008-76-6C21H19N5O3
- 2-(4-Ethoxyphenyl)-N-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide899996-64-6C21H19N5O3
- N-(3-Acetamidophenyl)-2-(2-(5-methyl-1,3,4-oxadiazol-2-yl)-1H-indol-1-yl)acetamide923141-36-0C21H19N5O3
- (E)-1-(2-Cyanophenyl)-3-(2-oxo-3-((tetrahydrofuran-2-yl)methyl)-2,3-dihydroquinazolin-4(1H)-ylidene)urea941895-23-4C21H19N5O3
- N-(4-Oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-2-(o-tolyloxy)acetamide899737-45-2C21H19N5O3
- N-(4-Oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-2-(m-tolyloxy)acetamide899966-76-8C21H19N5O3
- N-(4-Oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-2-(p-tolyloxy)acetamide900008-18-6C21H19N5O3
- 2-(4-Cyclopropyl-7-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyridazin-6(7H)-yl)-N-(furan-2-ylmethyl)acetamide1105239-64-2C21H19N5O3
- 3-Benzyl-5-methyl-2,4-dioxo-N-(pyridin-4-ylmethyl)-2,3,4,5-tetrahydro-1H-pyrrolo[3,2-d]pyrimidine-7-carboxamide921880-55-9C21H19N5O3
- 1,3-Dioxo-N-(propan-2-yl)-2-[4-(1H-1,2,4-triazol-1-ylmethyl)phenyl]-2,3-dihydro-1H-isoindole-5-carboxamide1190262-08-8C21H19N5O3
- 2-(Benzo[d]isoxazol-3-yl)-1-(4-(6-(furan-2-yl)pyridazin-3-yl)piperazin-1-yl)ethanone1206995-42-7C21H19N5O3
- N-(2-Ethylphenyl)-2-(3-oxo-8-phenoxy-[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl)acetamide1251590-93-8C21H19N5O3
- N-(2,3-Dimethylphenyl)-2-(3-oxo-8-phenoxy-[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl)acetamide1251619-00-7C21H19N5O3
- N-(2,4-Dimethylphenyl)-2-(3-oxo-8-phenoxy-[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl)acetamide1251601-79-2C21H19N5O3
- N-(2,5-Dimethylphenyl)-2-(3-oxo-8-phenoxy-[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl)acetamide1251628-44-0C21H19N5O3
- N-(2,6-Dimethylphenyl)-2-(3-oxo-8-phenoxy-[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl)acetamide1251692-17-7C21H19N5O3
- N-(4-Methoxybenzyl)-2-(3-oxo-6-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-2(3H)-yl)acetamide1251636-99-3C21H19N5O3
- 3-(Furan-2-yl)-N-(4-oxo-4-(quinolin-8-ylamino)butyl)-1H-pyrazole-5-carboxamide1297610-10-6C21H19N5O3
- N-(3-Acetylphenyl)-2-(1-ethyl-4-oxo-[1,2,4]triazolo[4,3-a]quinoxalin-5(4H)-yl)acetamide1358237-31-6C21H19N5O3
- 3-[2-(8-Methoxy-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl)-2-oxoethyl]-1,2,3-benzotriazin-4(3H)-one1351702-10-7C21H19N5O3
- N-(3-Methyl-4-oxo-3,4-dihydroquinazolin-6-yl)-4-(4-oxoquinazolin-3(4H)-yl)butanamide1574317-19-3C21H19N5O3
- 3-Benzyl-7-((3-methoxybenzyl)amino)pyrimido[4,5-d]pyrimidine-2,4(1H,3H)-dione1396762-04-1C21H19N5O3
- 2-(Benzo[d]isoxazol-3-yl)-1-(4-(pyrazolo[1,5-a]pyridine-3-carbonyl)piperazin-1-yl)ethanone1396868-49-7C21H19N5O3
- N-{[1-(3-Cyanopyrazin-2-yl)piperidin-4-yl]methyl}-2-oxo-2H-chromene-3-carboxamide1797586-05-0C21H19N5O3
- 2-(1H-1,3-Benzodiazol-1-yl)-N-{1-[(2,3-dihydro-1,4-benzodioxin-2-yl)methyl]-1H-pyrazol-4-yl}acetamide1797336-07-2C21H19N5O3
- N-(1-((2,3-Dihydrobenzo[b][1,4]dioxin-2-yl)methyl)-1H-pyrazol-4-yl)-2-methylimidazo[1,2-a]pyridine-3-carboxamide1706289-15-7C21H19N5O3
- 6-(1-Ethyl-7-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carbonyl)-2-oxo-1,2,5,6,7,8-hexahydro-1,6-naphthyridine-3-carbonitrile2034448-94-5C21H19N5O3
- 2-(Benzo[d]isoxazol-3-yl)-1-(3-(4-(phenoxymethyl)-1H-1,2,3-triazol-1-yl)azetidin-1-yl)ethanone2034248-91-2C21H19N5O3
- 3-(1-(1H-Indazole-3-carbonyl)piperidin-4-yl)quinazoline-2,4(1H,3H)-dione2034370-82-4C21H19N5O3
- N-((3-(6-Ethoxypyridin-3-yl)-1,2,4-oxadiazol-5-yl)methyl)-4-(1H-pyrrol-1-yl)benzamide2034421-14-0C21H19N5O3
- 3-(1-(1H-Indole-5-carbonyl)piperidin-4-yl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione2034425-90-4C21H19N5O3
- N-[4-(Acetylamino)phenyl]-2-(2-oxo-7-phenyl-2,3-dihydro-1H-imidazo[1,2-b]pyrazol-3-yl)acetamide1324093-37-9C21H19N5O3
- N-(3-Methyl-1-(4-methyl-6-oxo-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-5-yl)-2-(naphthalen-2-yloxy)acetamide1004638-83-8C21H19N5O3
- N-(3-Cyclopropyl-1-(4,5-dimethyl-6-oxo-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-5-yl)benzofuran-2-carboxamide1203280-50-5C21H19N5O3
- 5-[3-[(4aR,7aS)-2,3,4a,5,7,7a-Hexahydro-[1,4]dioxino[2,3-c]pyrrol-6-yl]quinoxalin-6-yl]-1,3-benzoxazol-2-amine2955529-67-4C21H19N5O3
- N-(1H-Indol-5-yl)-N'-{2-[(1H-indol-2-ylcarbonyl)amino]ethyl}ethanediamide1071915-27-9C21H19N5O3
- 2-{2-Oxo-2-[4-([1,2,4]triazolo[4,3-a]pyridin-3-yl)piperidin-1-yl]ethyl}-1H-isoindole-1,3(2H)-dione1010920-29-2C21H19N5O3
- 3-(6-Methoxy[1,2,4]triazolo[4,3-b]pyridazin-3-yl)-N-(4-phenoxyphenyl)propanamide1324068-58-7C21H19N5O3
- N-(3,4-Dimethoxyphenyl)-1-phenyl-5-(1H-pyrrol-1-yl)-1H-1,2,3-triazole-4-carboxamide1790196-71-2C21H19N5O3
- N-Benzyl-3-(2-methoxy-4-nitrophenyl)-N-methylimidazo[1,2-b]pyridazin-6-amine1644250-36-1C21H19N5O3
- Ethyl 4-oxo-1-phenyl-2-phenylimino-1,3,8,9-tetrazaspiro[4.5]deca-6,9-diene-6-carboxylate60206-46-4C21H19N5O3
- 5-[1-[4-(Benzimidazol-1-yl)benzoyl]piperidin-4-yl]-3H-1,3,4-oxadiazol-2-one2249018-23-1C21H19N5O3
- 6-{1-[2-(2-Oxo-2,3-dihydro-1,3-benzoxazol-3-yl)acetyl]-octahydropyrrolo[2,3-c]pyrrol-5-yl}pyridine-3-carbonitrile2548982-94-9C21H19N5O3
- N-[(4-Cyanophenyl)methyl]-5-hydroxy-2-morpholin-4-yl-1,7-naphthyridine-6-carboxamide2924181-60-0C21H19N5O3
- 9-(2-Ethoxyphenyl)-8-oxo-2-(p-tolyl)-8,9-dihydro-7H-purine-6-carboxamide899971-01-8C21H19N5O3
- 1,2,4-Oxadiazole-5-propanamide, 3-(2-methylphenyl)-N-[(5-phenyl-1,3,4-oxadiazol-2-yl)methyl]-1269279-90-4C21H19N5O3
- Methyl 4-((4-(6-methoxy-2-methylimidazo[1,2-a]pyridin-3-yl)pyrimidin-2-yl)amino)benzoate1204526-79-3C21H19N5O3
- Methyl 4-((4-(7-methoxy-2-methylimidazo[1,2-a]pyridin-3-yl)pyrimidin-2-yl)amino)benzoate1204526-03-3C21H19N5O3
- 2-[1-(4-Methoxyphenyl)-4-oxo-1H,4H,5H-pyrazolo[3,4-d]pyrimidin-5-yl]-N-(4-methylphenyl)acetamide2320925-19-5C21H19N5O3
- 2-[1-(4-Methoxyphenyl)-4-oxo-1H,4H,5H-pyrazolo[3,4-d]pyrimidin-5-yl]-N-methyl-N-phenylacetamide2320543-74-4C21H19N5O3
- 1-(4-{4-[(Prop-2-enamido)methyl]benzamido}phenyl)-1H-pyrazole-3-carboxamide2201990-21-6C21H19N5O3
- 1-(4-Oxo-3,4-dihydrophthalazine-1-carbonyl)-1',4'-dihydro-3'H-spiro[piperidine-4,2'-quinoxalin]-3'-one2306663-89-6C21H19N5O3
- Benzyl N-(2-hydroxy-1-phenylethyl)-N-(7H-purin-6-yl)carbamate2680728-75-8C21H19N5O3
Frequently asked questions
What is the molar mass of C21H19N5O3?
The molar mass of C21H19N5O3 is 389.42 g/mol, calculated from standard atomic weights for 21 carbon atoms, 19 hydrogen atoms, 5 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 389.1488 Da.
How many compounds have the formula C21H19N5O3?
CompoundList lists 176 compounds with the molecular formula C21H19N5O3, including N-(4-Ethoxyphenyl)-2-(3-oxo-6-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-2(3H)-yl)acetamide, N-Methyl-N-(2-oxo-2-(((3-phenyl-1,2,4-oxadiazol-5-yl)methyl)amino)ethyl)-1H-indole-3-carboxamide, 1-Ethyl-7-methyl-4-oxo-N-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-1,4-dihydro-1,8-naphthyridine-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 C21H19N5O3?
C21H19N5O3 has a degree of unsaturation of 15. 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.