Molecular formula
C21H16N4O4
52 compounds have this formula on CompoundList.
- Molar mass
- 388.38g/mol
- Monoisotopic mass
- 388.1172Da
- Atoms
- 45
- Elements
- 4
- Rings plus double bonds
- 16
The formula C21H16N4O4 describes a molecule made of 21 carbon atoms, 16 hydrogen atoms, 4 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 × 2164.94%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 164.15%1.008 × 16 = 16.128 g/mol
- N Nitrogen × 414.43%14.007 × 4 = 56.028 g/mol
- O Oxygen × 416.48%15.999 × 4 = 63.996 g/mol
Look up another formula
Compounds with the formula C21H16N4O4
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 52 of 52 compounds
4-(5,10-Dioxido-1H-imidazo(4,5-B)phenazin-2-yl)-2-ethoxyphenol
CAS 882865-39-6C21H16N4O4
Serantrypinone
CAS 366785-28-6C21H16N4O4
![3-Methyl-N-[2-methyl-5-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]-4-nitrobenzamide chemical structure, C21H16N4O4, CAS 303131-45-5](/s/QFCQNZBTGMXUEV-UHFFFAOYSA-N.svg)
3-Methyl-N-[2-methyl-5-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]-4-nitrobenzamide
CAS 303131-45-5C21H16N4O4
![4-Methyl-N-[2-methyl-3-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]-3-nitrobenzamide chemical structure, C21H16N4O4, CAS 332151-20-9](/s/ATINTRZEWHPCEG-UHFFFAOYSA-N.svg)
4-Methyl-N-[2-methyl-3-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]-3-nitrobenzamide
CAS 332151-20-9C21H16N4O4
(E)-Phenyl 3-(1-(2-cyanoethyl)-3-(3-nitrophenyl)-1H-pyrazol-4-yl)acrylate
CAS 956046-72-3C21H16N4O4
![N-(4-(6-Methoxyimidazo[1,2-b]pyridazin-2-yl)phenyl)benzo[d][1,3]dioxole-5-carboxamide chemical structure, C21H16N4O4, CAS 953216-28-9](/s/IHEDLBWCUYWSMW-UHFFFAOYSA-N.svg)
N-(4-(6-Methoxyimidazo[1,2-b]pyridazin-2-yl)phenyl)benzo[d][1,3]dioxole-5-carboxamide
CAS 953216-28-9C21H16N4O4
2-Oxo-N-(2-(6-oxo-3-(pyridin-3-yl)pyridazin-1(6H)-yl)ethyl)-2H-chromene-3-carboxamide
CAS 1021108-26-8C21H16N4O4
N-(2-Cyano-4-nitrophenyl)-1-(2-methylbenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide
CAS 941902-97-2C21H16N4O4
2-Oxo-N-(2-(6-oxo-3-(pyridin-4-yl)pyridazin-1(6H)-yl)ethyl)-2H-chromene-3-carboxamide
CAS 1021108-58-6C21H16N4O4
![3-(5-{[(3Z)-5-(Carbamoylamino)-2-oxo-2,3-dihydro-1H-indol-3-ylidene]methyl}-1H-pyrrol-3-yl)benzoic acid chemical structure, C21H16N4O4, CAS 1056225-13-8](/s/YIUCWIKVMNKNTC-MFOYZWKCSA-N.svg)
3-(5-{[(3Z)-5-(Carbamoylamino)-2-oxo-2,3-dihydro-1H-indol-3-ylidene]methyl}-1H-pyrrol-3-yl)benzoic acid
CAS 1056225-13-8C21H16N4O4
![N-[4-(1H-Benzimidazol-2-yl)phenyl]-2-(3-nitrophenoxy)acetamide chemical structure, C21H16N4O4, CAS 692274-85-4](/s/ARSNAJDQJNXACV-UHFFFAOYSA-N.svg)
N-[4-(1H-Benzimidazol-2-yl)phenyl]-2-(3-nitrophenoxy)acetamide
CAS 692274-85-4C21H16N4O4
![Methyl 2-[(5-(2-furyl)-1-phenyl-1,2,3-triazol-4-yl)carbonylamino]benzoate chemical structure, C21H16N4O4, CAS 950256-05-0](/s/NCBIBAAXGPXECS-UHFFFAOYSA-N.svg)
Methyl 2-[(5-(2-furyl)-1-phenyl-1,2,3-triazol-4-yl)carbonylamino]benzoate
CAS 950256-05-0C21H16N4O4
![N-[3-(1H-Benzimidazol-2-yl)phenyl]-2-(3-nitrophenoxy)acetamide chemical structure, C21H16N4O4, CAS 6086-04-0](/s/BOVBBSUARWHZEH-UHFFFAOYSA-N.svg)
N-[3-(1H-Benzimidazol-2-yl)phenyl]-2-(3-nitrophenoxy)acetamide
CAS 6086-04-0C21H16N4O4
![6-Amino-4-(7-methoxy-1,3-benzodioxol-5-yl)-3-phenyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile chemical structure, C21H16N4O4, CAS 712295-95-9](/s/MNMPWITYZHFOAG-UHFFFAOYSA-N.svg)
6-Amino-4-(7-methoxy-1,3-benzodioxol-5-yl)-3-phenyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile
CAS 712295-95-9C21H16N4O4
![[2-(Benzotriazol-2-yl)-4-methylphenyl] 3-methyl-4-nitrobenzoate chemical structure, C21H16N4O4, CAS 328555-25-5](/s/JGDQQPPWAAPBNB-UHFFFAOYSA-N.svg)
[2-(Benzotriazol-2-yl)-4-methylphenyl] 3-methyl-4-nitrobenzoate
CAS 328555-25-5C21H16N4O4
![3-(3-(Benzo[d][1,3]dioxol-5-yl)-1,2,4-oxadiazol-5-yl)-1-(3,4-dimethylphenyl)pyridazin-4(1H)-one chemical structure, C21H16N4O4, CAS 1251690-54-6](/s/HIORBMXLFQXENT-UHFFFAOYSA-N.svg)
3-(3-(Benzo[d][1,3]dioxol-5-yl)-1,2,4-oxadiazol-5-yl)-1-(3,4-dimethylphenyl)pyridazin-4(1H)-one
CAS 1251690-54-6C21H16N4O4
![Ethyl 3-(4-(1H-benzo[D]imidazole-2carbonyl)phenoxy)pyrazine-2-carboxylate chemical structure, C21H16N4O4, CAS 1227068-66-7](/s/PJRGIPZCWUCSGF-UHFFFAOYSA-N.svg)
Ethyl 3-(4-(1H-benzo[D]imidazole-2carbonyl)phenoxy)pyrazine-2-carboxylate
CAS 1227068-66-7C21H16N4O4
![N-[2-(2-Nitrophenyl)-4-oxo-1,2-dihydroquinazolin-3-yl]benzamide chemical structure, C21H16N4O4, CAS 352705-71-6](/s/KDOTYDMCNPEWMO-UHFFFAOYSA-N.svg)
N-[2-(2-Nitrophenyl)-4-oxo-1,2-dihydroquinazolin-3-yl]benzamide
CAS 352705-71-6C21H16N4O4
![5-{[(4-Isopropylphenyl)sulfonyl]amino}-N,N-dimethyl-6-piperazin-1-ylnicotinamide chemical structure, C21H16N4O4, CAS 1189681-93-3](/s/BCQHKSNPZIOJCQ-UHFFFAOYSA-N.svg)
5-{[(4-Isopropylphenyl)sulfonyl]amino}-N,N-dimethyl-6-piperazin-1-ylnicotinamide
CAS 1189681-93-3C21H16N4O4
![2-{2-[3-(2H-1,3-Benzodioxol-5-yl)-1,2,4-oxadiazol-5-yl]ethyl}-6-phenyl-2,3-dihydropyridazin-3-one chemical structure, C21H16N4O4, CAS 1112310-11-8](/s/HZGFBKGJPFIROD-UHFFFAOYSA-N.svg)
2-{2-[3-(2H-1,3-Benzodioxol-5-yl)-1,2,4-oxadiazol-5-yl]ethyl}-6-phenyl-2,3-dihydropyridazin-3-one
CAS 1112310-11-8C21H16N4O4
5-((3-(3-Methoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)pyrimidine-2,4,6(1H,3H,5H)-trione
CAS 1019067-17-4C21H16N4O4
![6-(2H-1,3-Benzodioxol-5-yl)-2-[2-(3-phenyl-1,2,4-oxadiazol-5-yl)ethyl]-2,3-dihydropyridazin-3-one chemical structure, C21H16N4O4, CAS 1112418-50-4](/s/GGQRQPLWHLRNSS-UHFFFAOYSA-N.svg)
6-(2H-1,3-Benzodioxol-5-yl)-2-[2-(3-phenyl-1,2,4-oxadiazol-5-yl)ethyl]-2,3-dihydropyridazin-3-one
CAS 1112418-50-4C21H16N4O4
![2-[2-(1,3-Benzodioxol-5-yl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]-N-phenylacetamide chemical structure, C21H16N4O4, CAS 1242966-45-5](/s/BUCCRQVDLMDIAW-UHFFFAOYSA-N.svg)
2-[2-(1,3-Benzodioxol-5-yl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]-N-phenylacetamide
CAS 1242966-45-5C21H16N4O4
![1-[2-(2-Methoxyphenyl)-2-oxoethyl]-3-(3-pyridin-4-yl-1,2,4-oxadiazol-5-yl)pyridin-2(1H)-one chemical structure, C21H16N4O4, CAS 1396684-39-1](/s/IQYBOQZIVBVCPF-UHFFFAOYSA-N.svg)
1-[2-(2-Methoxyphenyl)-2-oxoethyl]-3-(3-pyridin-4-yl-1,2,4-oxadiazol-5-yl)pyridin-2(1H)-one
CAS 1396684-39-1C21H16N4O4
- N-(5-Imidazo[1,2-a]pyrimidin-2-yl-2-methoxyphenyl)-1,3-benzodioxole-5-carboxamide862810-77-3C21H16N4O4
- N-(Benzo[d][1,3]dioxol-5-yl)-5-methyl-3-oxo-2-phenyl-3,5-dihydro-2H-pyrazolo[4,3-c]pyridine-7-carboxamide921880-27-5C21H16N4O4
- N-(3-(6-Methoxyimidazo[1,2-b]pyridazin-2-yl)phenyl)benzo[d][1,3]dioxole-5-carboxamide953149-09-2C21H16N4O4
- N-(2H-1,3-Benzodioxol-5-yl)-2-{4-oxo-2-phenyl-4H,5H-pyrazolo[1,5-a]pyrazin-5-yl}acetamide941893-90-9C21H16N4O4
- 3-((3-(3-Ethoxyphenyl)-1,2,4-oxadiazol-5-yl)methyl)benzofuro[3,2-d]pyrimidin-4(3H)-one1207047-43-5C21H16N4O4
- 2-(1-(4-Cyanobenzyl)-2,4-dioxo-1,2-dihydrobenzofuro[3,2-d]pyrimidin-3(4H)-yl)-N-methylacetamide1251634-44-2C21H16N4O4
- N-(6-(1H-Indol-1-yl)pyrimidin-4-yl)-2-(benzo[d][1,3]dioxol-5-yloxy)acetamide1428350-37-1C21H16N4O4
- 3-[2-Methoxy-6-(4-methylphenyl)pyridin-3-yl]-5-(4-nitrophenyl)-1,2,4-oxadiazole706764-63-8C21H16N4O4
- 3-Pyridinecarboxylic acid, 2-((2-(benzoylamino)phenyl)oxoacetyl)hydrazide85080-22-4C21H16N4O4
- N-(2-Cyano-4-nitrophenyl)-1-[(4-methylphenyl)methyl]-2-oxopyridine-3-carboxamide933205-90-4C21H16N4O4
- N-(2-Cyano-4-nitrophenyl)-1-(3-methylbenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide946248-11-9C21H16N4O4
- 2-((3-(Benzo[d][1,3]dioxol-5-yl)-1,2,4-oxadiazol-5-yl)methyl)-6-(p-tolyl)pyridazin-3(2H)-one1040658-06-7C21H16N4O4
- 3-(3-(Benzo[d][1,3]dioxol-5-yl)-1,2,4-oxadiazol-5-yl)-1-(4-ethylphenyl)pyridazin-4(1H)-one1251681-25-0C21H16N4O4
- N-((3-(5-Methylisoxazol-3-yl)-1,2,4-oxadiazol-5-yl)methyl)-9H-xanthene-9-carboxamide2034505-15-0C21H16N4O4
- 1-(2,4-Dinitrophenyl)-3,5-diphenyl-4,5-dihydro-1H-pyrazole5920-20-7C21H16N4O4
- 1-(9H-Fluoren-2-yl)ethanone 2-(2,4-dinitrophenyl)hydrazone109682-26-0C21H16N4O4
- N-[2-(4-Methoxyphenyl)imidazo[1,2-a]pyridin-3-yl]-3-nitrobenzamide850930-20-0C21H16N4O4
- N-[2-(4-Methoxyphenyl)imidazo[1,2-a]pyridin-3-yl]-4-nitrobenzamide850930-22-2C21H16N4O4
- 5-[5-(2-Oxo-2H-chromen-3-yl)-1,2,4-oxadiazol-3-yl]-1-propyl-2,3-dihydro-1H-1,3-benzodiazol-2-one951465-53-5C21H16N4O4
- 6-(1H-Imidazol-1-yl)-2-phenylquinazoline maleate1257260-00-6C21H16N4O4
- 3-Amino-5-nitro-1-(4-phenoxyphenyl)-1H-indole-2-carboxamide1643531-16-1C21H16N4O4
- 4-{[(E)-(4-Carboxyphenyl)diazenyl](2-phenylhydrazinylidene)methyl}benzoic acid144344-60-5C21H16N4O4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3-phenyl-5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]pyridine-6-carboxylate2248315-11-7C21H16N4O4
- 2-[4-Cyano-5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1H-pyrazol-1-yl]acetic acid2243504-73-4C21H16N4O4
- 6-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-1H-pyrazolo[1,5-a]imidazole-7-carboxylic acid2580190-78-7C21H16N4O4
- 7-(3-{[(Benzyloxy)carbonyl]amino}phenyl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid2639459-12-2C21H16N4O4
- 7-(3-{[(Benzyloxy)carbonyl]amino}phenyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid2680703-39-1C21H16N4O4
- 3-Cyano-N-(2-(2,6-dioxopiperidin-3-yl)-1-oxoisoindolin-4-yl)benzamide2319304-71-5C21H16N4O4
Frequently asked questions
What is the molar mass of C21H16N4O4?
The molar mass of C21H16N4O4 is 388.38 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms and 4 oxygen atoms. The monoisotopic mass is 388.1172 Da.
How many compounds have the formula C21H16N4O4?
CompoundList lists 52 compounds with the molecular formula C21H16N4O4, including 4-(5,10-Dioxido-1H-imidazo(4,5-B)phenazin-2-yl)-2-ethoxyphenol, Serantrypinone, 3-Methyl-N-[2-methyl-5-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]-4-nitrobenzamide. 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 C21H16N4O4?
C21H16N4O4 has a degree of unsaturation of 16. 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.