Molecular formula

C₂₁H₁₆N₄O₅

30 compounds have this formula on CompoundList.

Molar mass: 404.38g/mol
Monoisotopic mass: 404.1121Da
Atoms: 46
Elements: 4
Rings plus double bonds: 16

The formula C21H16N4O5 describes a molecule made of 21 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms and 5 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 × 2162.37%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 163.99%
1.008 × 16 = 16.128 g/mol
N Nitrogen × 413.86%
14.007 × 4 = 56.028 g/mol
O Oxygen × 519.78%
15.999 × 5 = 79.995 g/mol

Look up another formula

Compounds with the formula C21H16N4O5

Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.

Showing 1 to 30 of 30 compounds

3-Benzyl-1-[(E)-{[5-(4-nitrophenyl)furan-2-yl]methylidene}amino]imidazolidine-2,4-dione

CAS 394251-43-5C₂₁H₁₆N₄O₅

4-Ethoxy-3-nitro-N-(2-pyridin-4-yl-1,3-benzoxazol-5-yl)benzamide

CAS 381171-96-6C₂₁H₁₆N₄O₅

4-Ethoxy-3-nitro-N-(2-pyridin-3-yl-1,3-benzoxazol-5-yl)benzamide

CAS 381192-98-9C₂₁H₁₆N₄O₅

4-Ethoxy-3-nitro-N-[4-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]benzamide

CAS 327053-31-6C₂₁H₁₆N₄O₅

Methyl 3-(4-methylphenyl)-4-[(4-nitro-2,1,3-benzoxadiazol-7-yl)amino]benzoate

CAS 1629989-75-8C₂₁H₁₆N₄O₅

4-Methoxy-N-[2-methyl-5-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]-3-nitrobenzamide

CAS 314054-23-4C₂₁H₁₆N₄O₅

N-[2-Methyl-3-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]-2-(4-nitrophenoxy)acetamide

CAS 347338-20-9C₂₁H₁₆N₄O₅

3-(2-Oxo-5-((3-phenyl-1,2,4-oxadiazol-5-yl)methyl)benzo[d]oxazol-3(2H)-yl)piperidine-2,6-dione

CAS 3117940-39-0C₂₁H₁₆N₄O₅

N-(2H-1,3-Benzodioxol-5-yl)-2-[4-(3-methyl-1,2,4-oxadiazol-5-yl)-2-oxo-1,2-dihydroquinolin-1-yl]acetamide

CAS 1251629-06-7C₂₁H₁₆N₄O₅

N-{6-[(2H-1,3-benzodioxol-5-yl)methoxy]pyrimidin-4-yl}-2-(1,2-benzoxazol-3-yl)acetamide

CAS 1396572-38-5C₂₁H₁₆N₄O₅

$Methyl 7-[(2H-1,3-benzodioxol-5-yl)methyl]-6-imino-2-oxo-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxylate chemical structure, C21H16N4O5, CAS 893654-24-5$

Methyl 7-[(2H-1,3-benzodioxol-5-yl)methyl]-6-imino-2-oxo-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxylate

CAS 893654-24-5C₂₁H₁₆N₄O₅

N-{1-[4-(1H-imidazol-1-yl)phenyl]ethyl}-6-nitro-2-oxo-2H-chromene-3-carboxamide

CAS 853903-37-4C₂₁H₁₆N₄O₅

6-(2H-1,3-Benzodioxol-5-yl)-2-{[3-(4-methoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}-2,3-dihydropyridazin-3-one

CAS 1040658-26-1C₂₁H₁₆N₄O₅

2-{[3-(2H-1,3-Benzodioxol-5-yl)-1,2,4-oxadiazol-5-yl]methyl}-6-(3-methoxyphenyl)-2,3-dihydropyridazin-3-one

CAS 1040631-52-4C₂₁H₁₆N₄O₅

2-{[3-(2H-1,3-Benzodioxol-5-yl)-1,2,4-oxadiazol-5-yl]methyl}-6-(4-methoxyphenyl)-2,3-dihydropyridazin-3-one

CAS 1040631-75-1C₂₁H₁₆N₄O₅

3-Allyl-1-{[3-(1,3-benzodioxol-5-yl)-1,2,4-oxadiazol-5-yl]methyl}quinazoline-2,4(1H,3H)-dione

CAS 1207023-93-5C₂₁H₁₆N₄O₅

(E)-1-(Benzo[d][1,3]dioxol-5-yl)-3-(3-(furan-2-ylmethyl)-2-oxo-2,3-dihydroquinazolin-4(1H)-ylidene)urea

CAS 942002-06-4C₂₁H₁₆N₄O₅

N-(4-(Furan-2-yl)-1-methyl-6-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-b]pyridin-3-yl)-2-oxo-2H-chromene-3-carboxamide

CAS 1171240-32-6C₂₁H₁₆N₄O₅

N-(4-(Furan-2-yl)-1-methyl-6-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-b]pyridin-3-yl)-4-oxo-4H-chromene-2-carboxamide

CAS 1210524-31-4C₂₁H₁₆N₄O₅

1-(Benzo[d][1,3]dioxol-5-yl)-3-(2-((3-(furan-2-yl)-1,2,4-oxadiazol-5-yl)methyl)phenyl)urea

CAS 1797181-82-8C₂₁H₁₆N₄O₅

Benzoic acid, 4-((4-nitrobenzoyl)amino)-, ((2-hydroxyphenyl)methylene)hydrazide

CAS 88351-78-4C₂₁H₁₆N₄O₅

2,4-Dinitro-N-[(2-phenyl-2,3-dihydrochromen-4-ylidene)amino]aniline

CAS 16281-65-5C₂₁H₁₆N₄O₅

3-Methyl-4-nitrobenzoic acid 2-[[5-[(4-cyanophenoxy)methyl]-2-furanyl]methylene]hydrazide

CAS 445005-99-2C₂₁H₁₆N₄O₅

4-{1-[2-(2,4-Dinitrophenyl)hydrazinylidene]-3-phenylprop-2-en-1-yl}phenol

CAS 55947-42-7C₂₁H₁₆N₄O₅

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What is the molar mass of C21H16N4O5?

The molar mass of C21H16N4O5 is 404.38 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms and 5 oxygen atoms. The monoisotopic mass is 404.1121 Da.

How many compounds have the formula C21H16N4O5?

CompoundList lists 30 compounds with the molecular formula C21H16N4O5, including 3-Benzyl-1-[(E)-{[5-(4-nitrophenyl)furan-2-yl]methylidene}amino]imidazolidine-2,4-dione, 4-Ethoxy-3-nitro-N-(2-pyridin-4-yl-1,3-benzoxazol-5-yl)benzamide, 4-Ethoxy-3-nitro-N-(2-pyridin-3-yl-1,3-benzoxazol-5-yl)benzamide. 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 C21H16N4O5?

C21H16N4O5 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.