Molecular formula
C21H19N5O4
95 compounds have this formula on CompoundList.
- Molar mass
- 405.41g/mol
- Monoisotopic mass
- 405.1437Da
- Atoms
- 49
- Elements
- 4
- Rings plus double bonds
- 15
The formula C21H19N5O4 describes a molecule made of 21 carbon atoms, 19 hydrogen atoms, 5 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 × 2162.22%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 194.72%1.008 × 19 = 19.152 g/mol
- N Nitrogen × 517.27%14.007 × 5 = 70.035 g/mol
- O Oxygen × 415.79%15.999 × 4 = 63.996 g/mol
Look up another formula
Compounds with the formula C21H19N5O4
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 95 of 95 compounds
![3-Benzyl-7-ethyl-1-[(3-nitrophenyl)methyl]purine-2,6-dione chemical structure, C21H19N5O4, CAS 852663-89-9](/s/KLVRRSNTWASLPW-UHFFFAOYSA-N.svg)
3-Benzyl-7-ethyl-1-[(3-nitrophenyl)methyl]purine-2,6-dione
CAS 852663-89-9C21H19N5O4
![N-(2,5-Dimethoxyphenyl)-2-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide chemical structure, C21H19N5O4, CAS 852440-17-6](/s/NADIZXMWXBLLAF-UHFFFAOYSA-N.svg)
N-(2,5-Dimethoxyphenyl)-2-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide
CAS 852440-17-6C21H19N5O4
![2-(3-Methoxyphenyl)-6-[2-(4-methoxyphenyl)pyrazol-3-yl]-4-methyl-1,2,4-triazine-3,5-dione chemical structure, C21H19N5O4, CAS 321538-31-2](/s/VKVXJKITBQOEJA-UHFFFAOYSA-N.svg)
2-(3-Methoxyphenyl)-6-[2-(4-methoxyphenyl)pyrazol-3-yl]-4-methyl-1,2,4-triazine-3,5-dione
CAS 321538-31-2C21H19N5O4
N-(3-(6-Morpholinopyridazin-3-yl)phenyl)-4-nitrobenzamide
CAS 899745-51-8C21H19N5O4
Compound 5a (PMID: 27536893)
CAS 869069-21-6C21H19N5O4
![1,3-Dimethyl-6-[2-(methylamino)-5-nitrophenyl]-5-phenylpyrrolo[3,4-d]pyrimidine-2,4-dione chemical structure, C21H19N5O4, CAS 700350-11-4](/s/ZLFUOINEVKHWAN-UHFFFAOYSA-N.svg)
1,3-Dimethyl-6-[2-(methylamino)-5-nitrophenyl]-5-phenylpyrrolo[3,4-d]pyrimidine-2,4-dione
CAS 700350-11-4C21H19N5O4
N-(2-(3-(Furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-3-(4-oxoquinazolin-3(4H)-yl)propanamide
CAS 1207040-35-4C21H19N5O4
N-(1-(5-Ethyl-4-methyl-6-oxo-1,6-dihydropyrimidin-2-yl)-3-methyl-1H-pyrazol-5-yl)-4-oxo-4H-chromene-2-carboxamide
CAS 1003799-12-9C21H19N5O4
![N-(3,4-Dimethoxyphenyl)-2-(4-oxo-2-phenylpyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl)acetamide chemical structure, C21H19N5O4, CAS 1021045-84-0](/s/WVCYDJYSZHOHIW-UHFFFAOYSA-N.svg)
N-(3,4-Dimethoxyphenyl)-2-(4-oxo-2-phenylpyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl)acetamide
CAS 1021045-84-0C21H19N5O4
2-(2-Ethoxyphenyl)-9-(2-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide
CAS 869069-46-5C21H19N5O4
Isonaamidine D
CAS 203116-59-0C21H19N5O4
![Diethyl 3-cyano-7-(1H-indol-3-yl)-4H-pyrazolo[1,5-a]pyrimidine-6,7-dicarboxylate chemical structure, C21H19N5O4, CAS 80262-34-6](/s/VLRPJGCRCSUOGF-UHFFFAOYSA-N.svg)
Diethyl 3-cyano-7-(1H-indol-3-yl)-4H-pyrazolo[1,5-a]pyrimidine-6,7-dicarboxylate
CAS 80262-34-6C21H19N5O4
2-(4-Ethoxyphenyl)-9-(3-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide
CAS 899741-97-0C21H19N5O4
N-(4-(6-Morpholinopyridazin-3-yl)phenyl)-2-nitrobenzamide
CAS 899745-95-0C21H19N5O4
![6-Imino-2-oxo-1-phenyl-5-{[(E)-(3,4,5-trimethoxyphenyl)methylidene]amino}-1,2,3,6-tetrahydro-4-pyrimidinecarbonitrile chemical structure, C21H19N5O4, CAS 946387-13-9](/s/GWMOHFOYVAZAPO-UHFFFAOYSA-N.svg)
6-Imino-2-oxo-1-phenyl-5-{[(E)-(3,4,5-trimethoxyphenyl)methylidene]amino}-1,2,3,6-tetrahydro-4-pyrimidinecarbonitrile
CAS 946387-13-9C21H19N5O4
![N-(3,4-Dimethoxyphenyl)-2-(4-oxo-1-phenylpyrazolo[3,4-d]pyrimidin-5-yl)acetamide chemical structure, C21H19N5O4, CAS 852440-18-7](/s/NLSRKSLPDJCVAT-UHFFFAOYSA-N.svg)
N-(3,4-Dimethoxyphenyl)-2-(4-oxo-1-phenylpyrazolo[3,4-d]pyrimidin-5-yl)acetamide
CAS 852440-18-7C21H19N5O4
![7-(Benzo[d][1,3]dioxol-5-yl)-2-(4-methoxyphenyl)-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide chemical structure, C21H19N5O4, CAS 538318-40-0](/s/MRZGYTYRVFKWTQ-UHFFFAOYSA-N.svg)
7-(Benzo[d][1,3]dioxol-5-yl)-2-(4-methoxyphenyl)-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide
CAS 538318-40-0C21H19N5O4
![N-(2,4-Dimethoxyphenyl)-2-(4-oxo-2-phenylpyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl)acetamide chemical structure, C21H19N5O4, CAS 1021045-76-0](/s/ZFLBHOLFNLCSSV-UHFFFAOYSA-N.svg)
N-(2,4-Dimethoxyphenyl)-2-(4-oxo-2-phenylpyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl)acetamide
CAS 1021045-76-0C21H19N5O4
![N-(2,5-Dimethoxyphenyl)-2-(4-oxo-2-phenylpyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl)acetamide chemical structure, C21H19N5O4, CAS 1021045-78-2](/s/COJKTNVPKCHHHC-UHFFFAOYSA-N.svg)
N-(2,5-Dimethoxyphenyl)-2-(4-oxo-2-phenylpyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl)acetamide
CAS 1021045-78-2C21H19N5O4
![N-(3,5-Dimethoxyphenyl)-2-(4-oxo-2-phenylpyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl)acetamide chemical structure, C21H19N5O4, CAS 1021020-49-4](/s/NVUUYZHPEQWRIU-UHFFFAOYSA-N.svg)
N-(3,5-Dimethoxyphenyl)-2-(4-oxo-2-phenylpyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl)acetamide
CAS 1021020-49-4C21H19N5O4
3-(2,5-Dioxo-2,3,4,5-tetrahydro-1H-1,4-benzodiazepin-3-yl)-N-(3-methyl-4-oxo-3,4-dihydroquinazolin-6-yl)propanamide
CAS 1574288-19-9C21H19N5O4
2-(3-Ethoxy-2-hydroxyphenyl)-9-(3-methylphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide
CAS 863501-72-8C21H19N5O4
2-(3-((3-Methyl-1,2,4-oxadiazol-5-yl)methyl)-2,4-dioxo-3,4-dihydroquinazolin-1(2H)-yl)-N-(m-tolyl)acetamide
CAS 941977-64-6C21H19N5O4
![N-{[3-(4-Methoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}-3-(4-oxo-3(4H)-quinazolinyl)propanamide chemical structure, C21H19N5O4, CAS 921159-27-5](/s/FYBCARDZSDEKMH-UHFFFAOYSA-N.svg)
N-{[3-(4-Methoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}-3-(4-oxo-3(4H)-quinazolinyl)propanamide
CAS 921159-27-5C21H19N5O4
- 1-{[(4-Acetamidophenyl)carbamoyl]methyl}-6-oxo-N-phenyl-1,6-dihydropyridazine-3-carboxamide946366-68-3C21H19N5O4
- N-(2-Ethoxyphenyl)-2-{3-oxo-8-phenoxy-2H,3H-[1,2,4]triazolo[4,3-a]pyrazin-2-yl}acetamide1251544-26-9C21H19N5O4
- N-(2-Methoxyphenyl)-2-[8-(2-methylphenoxy)-3-oxo-2H,3H-[1,2,4]triazolo[4,3-a]pyrazin-2-yl]acetamide1251600-47-1C21H19N5O4
- N-(3,4-Dimethoxyphenyl)-2-(3-oxo-6-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-2(3H)-yl)acetamide1251550-73-8C21H19N5O4
- N-(1,3-Benzodioxol-5-yl)-2-(4-oxo-1-propyl[1,2,4]triazolo[4,3-a]quinoxalin-5(4H)-yl)acetamide1260926-28-0C21H19N5O4
- N-(1H-Benzo[d]imidazol-2-yl)-2-(3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl)acetamide1282102-40-2C21H19N5O4
- 9-(3,4-Dimethoxyphenyl)-2-(4-methylphenyl)-8-oxo-7H-purine-6-carboxamide898443-15-7C21H19N5O4
- N-(3-(6-Morpholinopyridazin-3-yl)phenyl)-2-nitrobenzamide899745-39-2C21H19N5O4
- 9-(2,4-Dimethoxyphenyl)-2-(3-methylphenyl)-8-oxo-7H-purine-6-carboxamide898422-52-1C21H19N5O4
- 9-(3,4-Dimethoxyphenyl)-2-(2-methylphenyl)-8-oxo-7H-purine-6-carboxamide898447-18-2C21H19N5O4
- 9-(3,4-Dimethoxyphenyl)-2-(3-methylphenyl)-8-oxo-7H-purine-6-carboxamide906164-99-6C21H19N5O4
- 3,5-Dimethoxy-N-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)benzamide900007-91-2C21H19N5O4
- 2-(2-Methoxyethyl)-1,3-dioxo-N-[4-(1H-1,2,4-triazol-1-ylmethyl)phenyl]-2,3-dihydro-1H-isoindole-5-carboxamide1144450-35-0C21H19N5O4
- 3-(2-(4-(6-(Furan-2-yl)pyridazin-3-yl)piperazin-1-yl)-2-oxoethyl)benzo[d]oxazol-2(3H)-one1207045-25-7C21H19N5O4
- 3-(2,5-Dioxo-2,3,4,5-tetrahydro-1H-benzo[e][1,4]diazepin-3-yl)-N-((3-phenyl-1,2,4-oxadiazol-5-yl)methyl)propanamide1214816-68-8C21H19N5O4
- 3-(2-(4-(5-(Furan-2-yl)-1,3,4-oxadiazol-2-yl)piperidin-1-yl)-2-oxoethyl)quinazolin-4(3H)-one1209903-58-1C21H19N5O4
- 2-(8-(3-Methoxyphenoxy)-3-oxo-[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl)-N-(m-tolyl)acetamide1251621-32-5C21H19N5O4
- N-(4-Methoxybenzyl)-2-(3-oxo-8-phenoxy-[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl)acetamide1251601-09-8C21H19N5O4
- N-(3-Methoxyphenyl)-2-[8-(2-methylphenoxy)-3-oxo-2H,3H-[1,2,4]triazolo[4,3-a]pyrazin-2-yl]acetamide1251678-59-7C21H19N5O4
- N-(4-Methoxyphenyl)-2-[8-(2-methylphenoxy)-3-oxo[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl]acetamide1251629-28-3C21H19N5O4
- Ethyl 4-(2-{7-methyl-3-oxo-2H,3H-[1,2,4]triazolo[4,3-c]quinazolin-2-yl}acetamido)benzoate1206990-97-7C21H19N5O4
- Methyl 2-(2-{1-ethyl-4-oxo-4H,5H-[1,2,4]triazolo[4,3-a]quinoxalin-5-yl}acetamido)benzoate1359065-94-3C21H19N5O4
- N-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-2-(1-ethyl-4-oxo-[1,2,4]triazolo[4,3-a]quinoxalin-5(4H)-yl)acetamide1358237-41-8C21H19N5O4
- N-(Benzo[d][1,3]dioxol-5-yl)-2-(1-isopropyl-4-oxo-[1,2,4]triazolo[4,3-a]quinoxalin-5(4H)-yl)acetamide1358415-66-3C21H19N5O4
- N-[3-(2-Methoxyethyl)-4-oxo-3,4-dihydroquinazolin-6-yl]-2-(4-oxoquinazolin-3(4H)-yl)acetamide1574362-49-4C21H19N5O4
- N-[3-(2-Methoxyethyl)-4-oxo-3,4-dihydroquinazolin-6-yl]-2-(1-oxophthalazin-2(1H)-yl)acetamide1574479-32-5C21H19N5O4
- Ethyl 4-{[(5-oxo-2-phenyl-5,6-dihydro-4H-imidazo[1,2-b][1,2,4]triazol-6-yl)acetyl]amino}benzoate1158565-60-6C21H19N5O4
- (Z)-3-(Benzo[d][1,3]dioxol-5-yl)-N-(3-cyclopropyl-1-(4-methyl-6-oxo-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-5-yl)acrylamide1207062-30-3C21H19N5O4
- N-(2,4-Dimethoxyphenyl)-2-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide852440-16-5C21H19N5O4
- 9-(2,4-Dimethoxyphenyl)-2-(4-methylphenyl)-8-oxo-7H-purine-6-carboxamide898442-97-2C21H19N5O4
- N-(3-(6-Morpholinopyridazin-3-yl)phenyl)-3-nitrobenzamide899953-16-3C21H19N5O4
- 9-(2-Ethoxyphenyl)-2-(2-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide900011-02-1C21H19N5O4
- 9-(2-Ethoxyphenyl)-2-(3-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide899971-05-2C21H19N5O4
- 9-(2-Ethoxyphenyl)-2-(4-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide899742-30-4C21H19N5O4
- 9-(2,4-Dimethoxyphenyl)-2-(2-methylphenyl)-8-oxo-7H-purine-6-carboxamide898447-06-8C21H19N5O4
- N-(4-(6-Morpholinopyridazin-3-yl)phenyl)-3-nitrobenzamide899953-75-4C21H19N5O4
- N-(4-(6-Morpholinopyridazin-3-yl)phenyl)-4-nitrobenzamide899986-03-9C21H19N5O4
- 3,4-Dimethoxy-N-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)benzamide899737-15-6C21H19N5O4
- 2,3-Dimethoxy-N-[1-(4-methylphenyl)-4-oxo-1H,4H,5H-pyrazolo[3,4-d]pyrimidin-5-yl]benzamide899966-60-0C21H19N5O4
- 2,4-Dimethoxy-N-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)benzamide919842-02-7C21H19N5O4
- 2-(2-Methoxyphenoxy)-N-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide900008-15-3C21H19N5O4
- N-(Benzo[d][1,3]dioxol-5-ylmethyl)-4-oxo-8-(p-tolyl)-4,6,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazine-3-carboxamide946229-81-8C21H19N5O4
- N-(4-Acetylphenyl)-2-(3,4-dioxo-8-phenyl-3,4,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazin-2(6H)-yl)acetamide941917-07-3C21H19N5O4
- 2-(4-Ethoxyphenoxy)-N-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide899996-58-8C21H19N5O4
- 2-(3-Methoxyphenoxy)-N-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide899737-43-0C21H19N5O4
- 2-(4-Methoxyphenoxy)-N-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide899966-75-7C21H19N5O4
- N-(2-Methoxyethyl)-1,3-dioxo-2-[4-(1H-1,2,4-triazol-1-ylmethyl)phenyl]-2,3-dihydro-1H-isoindole-5-carboxamide1190267-44-7C21H19N5O4
- N-(2-Methoxyphenyl)-2-(3-oxo-8-(p-tolyloxy)-[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl)acetamide1251602-03-5C21H19N5O4
- 2-(8-(3-Methoxyphenoxy)-3-oxo-[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl)-N-(o-tolyl)acetamide1251602-14-8C21H19N5O4
- Methyl 3-(8-(5,6-dimethoxypyridin-2-ylamino)-[1,2,4]-triazolo[1,5-a]pyridin-6-yl)benzoate1415695-13-4C21H19N5O4
- 3-(2-Oxo-2-(3-(4-(phenoxymethyl)-1H-1,2,3-triazol-1-yl)azetidin-1-yl)ethyl)benzo[d]oxazol-2(3H)-one1903402-84-5C21H19N5O4
- N-(2,4-Dimethoxy-5-nitrophenyl)-4-(1-methyl-1H-indol-3-yl)pyrimidin-2-amine1942853-78-2C21H19N5O4
- N-(3-Methyl-1-(6-oxo-4-propyl-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-5-yl)-4-oxo-4H-chromene-2-carboxamide1004637-40-4C21H19N5O4
- 9-(3,4-Dimethylphenyl)-2-(2-hydroxy-3-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide898442-77-8C21H19N5O4
- 2-(3-Ethoxy-2-hydroxyphenyl)-9-(4-methylphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide863502-18-5C21H19N5O4
- Zikv-IN-83022924-04-2C21H19N5O4
- N-(2-Methoxyphenyl)-2-[1-(4-methoxyphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]acetamide841212-49-5C21H19N5O4
- N-(4-Methoxyphenyl)-2-[1-(4-methoxyphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]acetamide842971-11-3C21H19N5O4
- 2H-Isoindole-1-carboxaldehyde, 4,5,6,7-tetrahydro-2-phenyl-, (2,4-dinitrophenyl)hydrazone61863-05-6C21H19N5O4
- 9-(4-Ethoxyphenyl)-2-(2-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide898422-25-8C21H19N5O4
- 9-(4-Ethoxyphenyl)-2-(3-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide898442-49-4C21H19N5O4
- 9-(4-Ethoxyphenyl)-2-(4-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide898446-72-5C21H19N5O4
- 2-(2-Ethoxyphenyl)-9-(3-methoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide900010-67-5C21H19N5O4
- Methyl 2-((7-(3,4-dimethoxyphenyl)imidazo[1,2-c]pyrimidin-5-yl)amino)nicotinate1956371-58-6C21H19N5O4
- (E)-3-(Benzo[d][1,3]dioxol-5-yl)-N-(3-methyl-1-(4-oxo-4,5,6,7-tetrahydro-3H-cyclopenta[d]pyrimidin-2-yl)-1H-pyrazol-5-yl)acrylamide1002482-19-0C21H19N5O4
- 6-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)-1-(4-methoxyphenyl)-3-methyl-1H,2H,3H,4H-pyrido[2,3-D]pyrimidine-2,4-dione1340755-75-0C21H19N5O4
- 2-[(4-Methylphenyl)amino]-1-phenylethanone 2-(2,4-dinitrophenyl)hydrazone4912-94-1C21H19N5O4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 1-(4,6-dimethylpyrimidin-2-yl)-3-(propan-2-yl)-1H-pyrazole-4-carboxylate2248346-23-6C21H19N5O4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 2-[1-(4,6-dimethylpyrimidin-2-yl)-3,5-dimethyl-1H-pyrazol-4-yl]acetate2248292-41-1C21H19N5O4
- 4-(Dimethylamino)-6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3,5-triazine-2-carboxylic acid2243513-44-0C21H19N5O4
- 2-(2,6-Dioxopiperidin-3-yl)-5-[(1,2,3,4-tetrahydro-1,8-naphthyridin-4-yl)amino]-2,3-dihydro-1H-isoindole-1,3-dione2703765-41-5C21H19N5O4
Frequently asked questions
What is the molar mass of C21H19N5O4?
The molar mass of C21H19N5O4 is 405.41 g/mol, calculated from standard atomic weights for 21 carbon atoms, 19 hydrogen atoms, 5 nitrogen atoms and 4 oxygen atoms. The monoisotopic mass is 405.1437 Da.
How many compounds have the formula C21H19N5O4?
CompoundList lists 95 compounds with the molecular formula C21H19N5O4, including 3-Benzyl-7-ethyl-1-[(3-nitrophenyl)methyl]purine-2,6-dione, N-(2,5-Dimethoxyphenyl)-2-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide, 2-(3-Methoxyphenyl)-6-[2-(4-methoxyphenyl)pyrazol-3-yl]-4-methyl-1,2,4-triazine-3,5-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 C21H19N5O4?
C21H19N5O4 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.