Molecular formula
C21H16N4O4S
50 compounds have this formula on CompoundList.
- Molar mass
- 420.44g/mol
- Monoisotopic mass
- 420.0892Da
- Atoms
- 46
- Elements
- 5
- Rings plus double bonds
- 16
The formula C21H16N4O4S describes a molecule made of 21 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms, 4 oxygen atoms and 1 sulfur atom. 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 × 2159.99%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 163.84%1.008 × 16 = 16.128 g/mol
- N Nitrogen × 413.33%14.007 × 4 = 56.028 g/mol
- O Oxygen × 415.22%15.999 × 4 = 63.996 g/mol
- S Sulfur × 17.63%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C21H16N4O4S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 50 of 50 compounds
![N-[3-(1,3-Benzodioxol-5-ylamino)quinoxalin-2-yl]benzenesulfonamide chemical structure, C21H16N4O4S, CAS 372089-72-0](/s/WQRNWHAQOXBYKH-UHFFFAOYSA-N.svg)
N-[3-(1,3-Benzodioxol-5-ylamino)quinoxalin-2-yl]benzenesulfonamide
CAS 372089-72-0C21H16N4O4S
![N-[(3-Benzamidophenyl)carbamothioyl]-3-nitrobenzamide chemical structure, C21H16N4O4S, CAS 428473-57-8](/s/DECWXYLFHMBUJC-UHFFFAOYSA-N.svg)
N-[(3-Benzamidophenyl)carbamothioyl]-3-nitrobenzamide
CAS 428473-57-8C21H16N4O4S
2-((Furan-2-ylmethylene)hydrazono)-5-(3-nitrobenzyl)-3-phenylthiazolidin-4-one
CAS 315240-91-6C21H16N4O4S
![3-Amino-4-(furan-2-yl)-N-(4-nitrophenyl)-6,7-dihydro-5H-cyclopenta[b]thieno[3,2-e]pyridine-2-carboxamide chemical structure, C21H16N4O4S, CAS 434291-67-5](/s/RFSHLQARSJSRRR-UHFFFAOYSA-N.svg)
3-Amino-4-(furan-2-yl)-N-(4-nitrophenyl)-6,7-dihydro-5H-cyclopenta[b]thieno[3,2-e]pyridine-2-carboxamide
CAS 434291-67-5C21H16N4O4S
![2-(3-(Benzo[d][1,3]dioxol-5-yl)-6-oxopyridazin-1(6H)-yl)-N-(2-methylbenzo[d]thiazol-5-yl)acetamide chemical structure, C21H16N4O4S, CAS 1251697-07-0](/s/HCBSZKWIZAGVTL-UHFFFAOYSA-N.svg)
2-(3-(Benzo[d][1,3]dioxol-5-yl)-6-oxopyridazin-1(6H)-yl)-N-(2-methylbenzo[d]thiazol-5-yl)acetamide
CAS 1251697-07-0C21H16N4O4S
![N-(4-Methylbenzo[d]thiazol-2-yl)-1-(3-nitrobenzyl)-6-oxo-1,6-dihydropyridine-3-carboxamide chemical structure, C21H16N4O4S, CAS 941885-26-3](/s/MLJALLXESGPOOF-UHFFFAOYSA-N.svg)
N-(4-Methylbenzo[d]thiazol-2-yl)-1-(3-nitrobenzyl)-6-oxo-1,6-dihydropyridine-3-carboxamide
CAS 941885-26-3C21H16N4O4S
![1-(Benzo[d][1,3]dioxol-5-yl)-3-(4-(7-methyl-5-oxo-5H-thiazolo[3,2-a]pyrimidin-3-yl)phenyl)urea chemical structure, C21H16N4O4S, CAS 1105247-13-9](/s/NCPVABVBAQKVFX-UHFFFAOYSA-N.svg)
1-(Benzo[d][1,3]dioxol-5-yl)-3-(4-(7-methyl-5-oxo-5H-thiazolo[3,2-a]pyrimidin-3-yl)phenyl)urea
CAS 1105247-13-9C21H16N4O4S
Dyrk1A/|A-synuclein-IN-2
CAS 2789711-66-4C21H16N4O4S
2-(((4-(((4-Methylpyrimidin-2-yl)amino)sulfonyl)phenyl)amino)methylene)indane-1,3-dione
CAS 418805-41-1C21H16N4O4S
![3-(2-{[5-(Furan-2-yl)-4-phenyl-4H-1,2,4-triazol-3-yl]sulfanyl}acetamido)benzoic acid chemical structure, C21H16N4O4S, CAS 726165-12-4](/s/YDPVSOXBIPPYCS-UHFFFAOYSA-N.svg)
3-(2-{[5-(Furan-2-yl)-4-phenyl-4H-1,2,4-triazol-3-yl]sulfanyl}acetamido)benzoic acid
CAS 726165-12-4C21H16N4O4S
![4-[[3-(Benzenesulfonamido)quinoxalin-2-yl]amino]benzoic acid chemical structure, C21H16N4O4S, CAS 293324-40-0](/s/RXGNLKDXFQJQCN-UHFFFAOYSA-N.svg)
4-[[3-(Benzenesulfonamido)quinoxalin-2-yl]amino]benzoic acid
CAS 293324-40-0C21H16N4O4S
![Methyl 2-{[(4-oxoquinazolin-3(4H)-yl)acetyl]amino}-5-phenyl-1,3-thiazole-4-carboxylate chemical structure, C21H16N4O4S, CAS 1351689-10-5](/s/HOOIACJUGBOJRX-UHFFFAOYSA-N.svg)
Methyl 2-{[(4-oxoquinazolin-3(4H)-yl)acetyl]amino}-5-phenyl-1,3-thiazole-4-carboxylate
CAS 1351689-10-5C21H16N4O4S
![N-(5-(5-Phenylisoxazole-3-carbonyl)-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-yl)furan-3-carboxamide chemical structure, C21H16N4O4S, CAS 1428355-29-6](/s/CABJQOXEITTWQW-UHFFFAOYSA-N.svg)
N-(5-(5-Phenylisoxazole-3-carbonyl)-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-yl)furan-3-carboxamide
CAS 1428355-29-6C21H16N4O4S
(Z)-Ethyl 4-((2-cyano-2-(4-(4-nitrophenyl)thiazol-2-yl)vinyl)amino)benzoate
CAS 342377-37-1C21H16N4O4S
![(3Z)-3-[2-(3,4-Dimethoxyphenyl)-6-oxo[1,3]thiazolo[3,2-b][1,2,4]triazol-5(6H)-ylidene]-1-methyl-1,3-dihydro-2H-indol-2-one chemical structure, C21H16N4O4S, CAS 618854-26-5](/s/NRMXXJFBSAEZKJ-MSUUIHNZSA-N.svg)
(3Z)-3-[2-(3,4-Dimethoxyphenyl)-6-oxo[1,3]thiazolo[3,2-b][1,2,4]triazol-5(6H)-ylidene]-1-methyl-1,3-dihydro-2H-indol-2-one
CAS 618854-26-5C21H16N4O4S
![2-[[(E)-3-(5-Nitro-2-pyridin-2-ylsulfanylphenyl)prop-2-enoyl]amino]benzamide chemical structure, C21H16N4O4S, CAS 914636-30-9](/s/OTKMPGJEWIFMBN-DHZHZOJOSA-N.svg)
2-[[(E)-3-(5-Nitro-2-pyridin-2-ylsulfanylphenyl)prop-2-enoyl]amino]benzamide
CAS 914636-30-9C21H16N4O4S
![N-(5-Methoxybenzo[d]thiazol-2-yl)-2-nitro-N-(pyridin-3-ylmethyl)benzamide chemical structure, C21H16N4O4S, CAS 895414-38-7](/s/ZQDOLLUOVGCVGR-UHFFFAOYSA-N.svg)
N-(5-Methoxybenzo[d]thiazol-2-yl)-2-nitro-N-(pyridin-3-ylmethyl)benzamide
CAS 895414-38-7C21H16N4O4S
![7-Cyclopropyl-6-(((3-phenyl-1,2,4-oxadiazol-5-yl)methyl)thio)-[1,3]dioxolo[4,5-g]quinazolin-8(7H)-one chemical structure, C21H16N4O4S, CAS 1030110-49-6](/s/SDXGNUNBILKPOS-UHFFFAOYSA-N.svg)
7-Cyclopropyl-6-(((3-phenyl-1,2,4-oxadiazol-5-yl)methyl)thio)-[1,3]dioxolo[4,5-g]quinazolin-8(7H)-one
CAS 1030110-49-6C21H16N4O4S
![N-(2,5-Dimethoxyphenyl)-1-[4-(piperidin-1-ylsulfonyl)phenyl]-1H-imidazole-4-carboxamide chemical structure, C21H16N4O4S, CAS 1113121-52-0](/s/DDIOUVCZLRIVRC-UHFFFAOYSA-N.svg)
N-(2,5-Dimethoxyphenyl)-1-[4-(piperidin-1-ylsulfonyl)phenyl]-1H-imidazole-4-carboxamide
CAS 1113121-52-0C21H16N4O4S
![3-((4-(3-Methoxyphenyl)-1,1-dioxido-3-oxo-3,4-dihydro-2H-pyrido[2,3-e][1,2,4]thiadiazin-2-yl)methyl)benzonitrile chemical structure, C21H16N4O4S, CAS 1251606-43-5](/s/YWRWVIZPYCJWIT-UHFFFAOYSA-N.svg)
3-((4-(3-Methoxyphenyl)-1,1-dioxido-3-oxo-3,4-dihydro-2H-pyrido[2,3-e][1,2,4]thiadiazin-2-yl)methyl)benzonitrile
CAS 1251606-43-5C21H16N4O4S
![3-[(E)-[5-(4-Nitrophenyl)furan-2-yl]methylideneamino]-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d]pyrimidin-4-one chemical structure, C21H16N4O4S, CAS 359816-49-2](/s/ALXVFCIKWAZWMG-FOKLQQMPSA-N.svg)
3-[(E)-[5-(4-Nitrophenyl)furan-2-yl]methylideneamino]-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d]pyrimidin-4-one
CAS 359816-49-2C21H16N4O4S
![N-(6-Methylbenzo[d]thiazol-2-yl)-1-(3-nitrobenzyl)-6-oxo-1,6-dihydropyridine-3-carboxamide chemical structure, C21H16N4O4S, CAS 942010-07-3](/s/FCBUHUVLDAAVCJ-UHFFFAOYSA-N.svg)
N-(6-Methylbenzo[d]thiazol-2-yl)-1-(3-nitrobenzyl)-6-oxo-1,6-dihydropyridine-3-carboxamide
CAS 942010-07-3C21H16N4O4S
![2-[(5Z)-5-(3-Methoxybenzylidene)-2,4-dioxo-1,3-thiazolidin-3-yl]-N-(quinoxalin-6-yl)acetamide chemical structure, C21H16N4O4S, CAS 929839-39-4](/s/DCNGUTMDWRMVFP-ZDLGFXPLSA-N.svg)
2-[(5Z)-5-(3-Methoxybenzylidene)-2,4-dioxo-1,3-thiazolidin-3-yl]-N-(quinoxalin-6-yl)acetamide
CAS 929839-39-4C21H16N4O4S
![2-[(5Z)-5-(2-Methoxybenzylidene)-2,4-dioxo-1,3-thiazolidin-3-yl]-N-(quinoxalin-6-yl)acetamide chemical structure, C21H16N4O4S, CAS 929830-62-6](/s/OUXMRBIPSWHBNM-ZDLGFXPLSA-N.svg)
2-[(5Z)-5-(2-Methoxybenzylidene)-2,4-dioxo-1,3-thiazolidin-3-yl]-N-(quinoxalin-6-yl)acetamide
CAS 929830-62-6C21H16N4O4S
- 2-[(5Z)-5-(4-Methoxybenzylidene)-2,4-dioxo-1,3-thiazolidin-3-yl]-N-(quinoxalin-6-yl)acetamide929961-50-2C21H16N4O4S
- (E)-1-(Benzo[d][1,3]dioxol-5-yl)-3-(2-oxo-3-(thiophen-2-ylmethyl)-2,3-dihydroquinazolin-4(1H)-ylidene)urea942002-09-7C21H16N4O4S
- N-(4-Acetylphenyl)-3-methyl-6-(3-nitrophenyl)imidazo[2,1-b][1,3]thiazole-2-carboxamide852135-88-7C21H16N4O4S
- N-(3-Acetylphenyl)-3-methyl-6-(3-nitrophenyl)imidazo[2,1-b][1,3]thiazole-2-carboxamide852135-89-8C21H16N4O4S
- N-(5-(5-Phenylisoxazole-3-carbonyl)-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-yl)furan-2-carboxamide1351618-46-6C21H16N4O4S
- N-(1-Methyl-6-oxo-4-(thiophen-2-yl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-b]pyridin-3-yl)-2-oxo-2H-chromene-3-carboxamide1203198-18-8C21H16N4O4S
- N-(1-Methyl-6-oxo-4-(thiophen-2-yl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-b]pyridin-3-yl)-4-oxo-4H-chromene-2-carboxamide1203097-03-3C21H16N4O4S
- 5-Nitro-N-[5-(5,6,7,8-tetrahydronaphthalen-2-yl)-1,3,4-oxadiazol-2-yl]-1-benzothiophene-2-carboxamide862809-26-5C21H16N4O4S
- 3-[(E)-[5-(3-Nitrophenyl)furan-2-yl]methylideneamino]-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d]pyrimidin-4-one384359-31-3C21H16N4O4S
- Ethyl 2-{[(4-oxo-1-phenyl-1,4-dihydropyridazin-3-yl)carbonyl]amino}-1,3-benzothiazole-6-carboxylate898472-90-7C21H16N4O4S
- 1-[(3-Methylphenyl)methyl]-N-(6-nitro-1,3-benzothiazol-2-yl)-2-oxo-1,2-dihydropyridine-3-carboxamide923073-84-1C21H16N4O4S
- N-(6-Methyl-1,3-benzothiazol-2-yl)-1-[(3-nitrophenyl)methyl]-2-oxo-1,2-dihydropyridine-3-carboxamide941910-56-1C21H16N4O4S
- N-(4-Methylbenzo[d]thiazol-2-yl)-1-(3-nitrobenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide942008-67-5C21H16N4O4S
- N-(Benzo[d][1,3]dioxol-5-yl)-2-(2-methyl-4-oxo-7-phenylthiazolo[4,5-d]pyridazin-5(4H)-yl)acetamide941942-44-5C21H16N4O4S
- N-(4-Methoxybenzo[d]thiazol-2-yl)-3-nitro-N-(pyridin-3-ylmethyl)benzamide895002-23-0C21H16N4O4S
- N-(5-Methoxybenzo[d]thiazol-2-yl)-3-nitro-N-(pyridin-3-ylmethyl)benzamide895411-45-7C21H16N4O4S
- N-(5-Methoxybenzo[d]thiazol-2-yl)-3-nitro-N-(pyridin-2-ylmethyl)benzamide941878-21-3C21H16N4O4S
- N-(6-Methoxybenzo[d]thiazol-2-yl)-3-nitro-N-(pyridin-2-ylmethyl)benzamide941967-91-5C21H16N4O4S
- (Z)-Ethyl 4-((2-cyano-2-(4-(3-nitrophenyl)thiazol-2-yl)vinyl)amino)benzoate1321771-32-7C21H16N4O4S
- Ethyl 2-({5-[(E)-1-naphthylmethylidene]-4-oxo-4,5-dihydro-1,3-thiazol-2-yl}amino)-6-oxo-1,6-dihydro-5-pyrimidinecarboxylate866041-00-1C21H16N4O4S
- 3-(2,5-Dioxopyrrolidin-1-yl)-N-[4-(1,3-thiazol-2-ylcarbamoyl)phenyl]benzamide404362-66-9C21H16N4O4S
- 2-[(3-Nitrobenzoyl)carbamothioylamino]-N-phenylbenzamide642951-66-4C21H16N4O4S
- Benzenesulfonamide, 4-methyl-N-[2-(4-nitrophenyl)-4-quinazolinyl]-61335-57-7C21H16N4O4S
- 1,2-Benzisothiazole-2(3H)-acetamide, 3-oxo-N-[4-(2-phenyldiazenyl)phenyl]-, 1,1-dioxide452293-94-6C21H16N4O4S
- 4-Oxo-N-[4-(2-pyridylsulfamoyl)phenyl]-1H-quinoline-3-carboxamide873050-38-5C21H16N4O4S
- 1H-Isoindole-5-sulfonamide, 2,3-dihydro-2-methyl-1,3-dioxo-N-[4-(2-phenyldiazenyl)phenyl]-1180030-26-5C21H16N4O4S
Frequently asked questions
What is the molar mass of C21H16N4O4S?
The molar mass of C21H16N4O4S is 420.44 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms, 4 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 420.0892 Da.
How many compounds have the formula C21H16N4O4S?
CompoundList lists 50 compounds with the molecular formula C21H16N4O4S, including N-[3-(1,3-Benzodioxol-5-ylamino)quinoxalin-2-yl]benzenesulfonamide, N-[(3-Benzamidophenyl)carbamothioyl]-3-nitrobenzamide, 2-((Furan-2-ylmethylene)hydrazono)-5-(3-nitrobenzyl)-3-phenylthiazolidin-4-one. 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 C21H16N4O4S?
C21H16N4O4S 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.