Molecular formula
C21H16N4O3S
59 compounds have this formula on CompoundList.
- Molar mass
- 404.44g/mol
- Monoisotopic mass
- 404.0943Da
- Atoms
- 45
- Elements
- 5
- Rings plus double bonds
- 16
The formula C21H16N4O3S describes a molecule made of 21 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms, 3 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 × 2162.36%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 163.99%1.008 × 16 = 16.128 g/mol
- N Nitrogen × 413.85%14.007 × 4 = 56.028 g/mol
- O Oxygen × 311.87%15.999 × 3 = 47.997 g/mol
- S Sulfur × 17.93%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C21H16N4O3S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 59 of 59 compounds
![(E)-4-(5-(2-Cyano-2-(1-methyl-1H-benzo[d]imidazol-2-yl)vinyl)furan-2-yl)benzenesulfonamide chemical structure, C21H16N4O3S, CAS 1164507-35-0](/s/RMOVRRIGZKNFAJ-NTCAYCPXSA-N.svg)
(E)-4-(5-(2-Cyano-2-(1-methyl-1H-benzo[d]imidazol-2-yl)vinyl)furan-2-yl)benzenesulfonamide
CAS 1164507-35-0C21H16N4O3S
![1-(Furan-2-ylmethyl)-3-(phenylsulfonyl)-1H-pyrrolo[2,3-b]quinoxalin-2-amine chemical structure, C21H16N4O3S, CAS 585557-32-0](/s/CYWCPVXKHNAXDK-UHFFFAOYSA-N.svg)
1-(Furan-2-ylmethyl)-3-(phenylsulfonyl)-1H-pyrrolo[2,3-b]quinoxalin-2-amine
CAS 585557-32-0C21H16N4O3S
![Ethyl 2-[(2-pyridin-2-ylquinoline-4-carbonyl)amino]-1,3-thiazole-4-carboxylate chemical structure, C21H16N4O3S, CAS 380323-16-0](/s/SONVXKPCXOSCFV-UHFFFAOYSA-N.svg)
Ethyl 2-[(2-pyridin-2-ylquinoline-4-carbonyl)amino]-1,3-thiazole-4-carboxylate
CAS 380323-16-0C21H16N4O3S
![3-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-1-phenyl-N-(thiazol-2-yl)-1H-pyrazole-4-carboxamide chemical structure, C21H16N4O3S, CAS 882225-77-6](/s/MQEWXYBDDCYDRC-UHFFFAOYSA-N.svg)
3-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-1-phenyl-N-(thiazol-2-yl)-1H-pyrazole-4-carboxamide
CAS 882225-77-6C21H16N4O3S
![N-1,3-Benzodioxol-5-yl-2-[(7-phenyl-5H-pyrrolo[3,2-d]pyrimidin-4-yl)thio]acetamide chemical structure, C21H16N4O3S, CAS 1251698-09-5](/s/DEROUUUNSKGFGW-UHFFFAOYSA-N.svg)
N-1,3-Benzodioxol-5-yl-2-[(7-phenyl-5H-pyrrolo[3,2-d]pyrimidin-4-yl)thio]acetamide
CAS 1251698-09-5C21H16N4O3S
![N-(3-(2,3-Dihydroimidazo[2,1-b]thiazol-6-yl)phenyl)-2-(1,3-dioxoisoindolin-2-yl)acetamide chemical structure, C21H16N4O3S, CAS 1251627-32-3](/s/YTYHVNJCBPVEKV-UHFFFAOYSA-N.svg)
N-(3-(2,3-Dihydroimidazo[2,1-b]thiazol-6-yl)phenyl)-2-(1,3-dioxoisoindolin-2-yl)acetamide
CAS 1251627-32-3C21H16N4O3S
![N-(1-(Benzo[d]thiazol-2-yl)-3-methyl-1H-pyrazol-5-yl)-7-methoxybenzofuran-2-carboxamide chemical structure, C21H16N4O3S, CAS 1172250-26-8](/s/NEGUVOARSQFGAZ-UHFFFAOYSA-N.svg)
N-(1-(Benzo[d]thiazol-2-yl)-3-methyl-1H-pyrazol-5-yl)-7-methoxybenzofuran-2-carboxamide
CAS 1172250-26-8C21H16N4O3S
N-(3-(6-(Methylsulfonyl)pyridazin-3-yl)phenyl)quinoline-2-carboxamide
CAS 897614-40-3C21H16N4O3S
![(E)-N-(4-((2-(4-(Benzo[d][1,3]dioxol-5-yl)thiazol-2-yl)-2-cyanovinyl)amino)phenyl)acetamide chemical structure, C21H16N4O3S, CAS 851267-20-4](/s/PSKBPMJZFXHYJP-XNTDXEJSSA-N.svg)
(E)-N-(4-((2-(4-(Benzo[d][1,3]dioxol-5-yl)thiazol-2-yl)-2-cyanovinyl)amino)phenyl)acetamide
CAS 851267-20-4C21H16N4O3S
6-(3-(Furan-2-yl)-1-(phenylsulfonyl)-4,5-dihydro-1H-pyrazol-5-yl)quinoxaline
CAS 946258-54-4C21H16N4O3S
![4-Methoxy-N-[[4-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]carbamothioyl]benzamide chemical structure, C21H16N4O3S, CAS 385386-07-2](/s/WQSKISOFAZBRPK-UHFFFAOYSA-N.svg)
4-Methoxy-N-[[4-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]carbamothioyl]benzamide
CAS 385386-07-2C21H16N4O3S
![3-Methoxy-N-[[3-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]carbamothioyl]benzamide chemical structure, C21H16N4O3S, CAS 364748-86-7](/s/YEPONDRIOWRMTI-UHFFFAOYSA-N.svg)
3-Methoxy-N-[[3-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]carbamothioyl]benzamide
CAS 364748-86-7C21H16N4O3S
![3-Methoxy-N-{[4-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]carbamothioyl}benzamide chemical structure, C21H16N4O3S, CAS 428499-44-9](/s/IXDHNFNSVMZODM-UHFFFAOYSA-N.svg)
3-Methoxy-N-{[4-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]carbamothioyl}benzamide
CAS 428499-44-9C21H16N4O3S
![(3Z)-1-Ethyl-3-[2-(2-methoxyphenyl)-6-oxo[1,3]thiazolo[3,2-b][1,2,4]triazol-5(6H)-ylidene]-1,3-dihydro-2H-indol-2-one chemical structure, C21H16N4O3S, CAS 577764-06-8](/s/AVJQJRYIMMQQBF-MSUUIHNZSA-N.svg)
(3Z)-1-Ethyl-3-[2-(2-methoxyphenyl)-6-oxo[1,3]thiazolo[3,2-b][1,2,4]triazol-5(6H)-ylidene]-1,3-dihydro-2H-indol-2-one
CAS 577764-06-8C21H16N4O3S
![3-[1-(1,3-Benzothiazol-2-yl)-5-hydroxy-3-methyl-1H-pyrazol-4-yl]-1-phenylpyrrolidine-2,5-dione chemical structure, C21H16N4O3S, CAS 944788-31-2](/s/JXUYGVUCRYINGY-UHFFFAOYSA-N.svg)
3-[1-(1,3-Benzothiazol-2-yl)-5-hydroxy-3-methyl-1H-pyrazol-4-yl]-1-phenylpyrrolidine-2,5-dione
CAS 944788-31-2C21H16N4O3S
![3-(1,3-Benzodioxol-5-yl)-6-({[3-(4-methylphenyl)-1,2,4-oxadiazol-5-yl]methyl}sulfanyl)pyridazine chemical structure, C21H16N4O3S, CAS 1111260-36-6](/s/JYNBECCAOOCQNE-UHFFFAOYSA-N.svg)
3-(1,3-Benzodioxol-5-yl)-6-({[3-(4-methylphenyl)-1,2,4-oxadiazol-5-yl]methyl}sulfanyl)pyridazine
CAS 1111260-36-6C21H16N4O3S
![3-(1,3-Benzodioxol-5-yl)-6-({[3-(2-methylphenyl)-1,2,4-oxadiazol-5-yl]methyl}sulfanyl)pyridazine chemical structure, C21H16N4O3S, CAS 1111419-50-1](/s/HDNHJOFMVTXFRY-UHFFFAOYSA-N.svg)
3-(1,3-Benzodioxol-5-yl)-6-({[3-(2-methylphenyl)-1,2,4-oxadiazol-5-yl]methyl}sulfanyl)pyridazine
CAS 1111419-50-1C21H16N4O3S
![3-(1,3-Benzodioxol-5-yl)-6-({[3-(3-methylphenyl)-1,2,4-oxadiazol-5-yl]methyl}sulfanyl)pyridazine chemical structure, C21H16N4O3S, CAS 1111316-51-8](/s/ZARURFPLSRZBNY-UHFFFAOYSA-N.svg)
3-(1,3-Benzodioxol-5-yl)-6-({[3-(3-methylphenyl)-1,2,4-oxadiazol-5-yl]methyl}sulfanyl)pyridazine
CAS 1111316-51-8C21H16N4O3S
![Ethyl 2-({[2-(pyridin-4-yl)quinolin-4-yl]carbonyl}amino)-1,3-thiazole-4-carboxylate chemical structure, C21H16N4O3S, CAS 1282143-62-7](/s/YEZBSIGRZSIUBQ-UHFFFAOYSA-N.svg)
Ethyl 2-({[2-(pyridin-4-yl)quinolin-4-yl]carbonyl}amino)-1,3-thiazole-4-carboxylate
CAS 1282143-62-7C21H16N4O3S
![Methyl 4-methyl-2-({[2-(pyridin-4-yl)quinolin-4-yl]carbonyl}amino)-1,3-thiazole-5-carboxylate chemical structure, C21H16N4O3S, CAS 1401556-42-0](/s/NPRMHZHGOJQQSS-UHFFFAOYSA-N.svg)
Methyl 4-methyl-2-({[2-(pyridin-4-yl)quinolin-4-yl]carbonyl}amino)-1,3-thiazole-5-carboxylate
CAS 1401556-42-0C21H16N4O3S
![1-[2-(2,3-Dihydro-1H-indol-1-yl)-2-oxoethyl]-5-[3-(thiophen-3-yl)-1,2,4-oxadiazol-5-yl]-1,2-dihydropyridin-2-one chemical structure, C21H16N4O3S, CAS 1421533-24-5](/s/FBJRIGWZPDHAPQ-UHFFFAOYSA-N.svg)
1-[2-(2,3-Dihydro-1H-indol-1-yl)-2-oxoethyl]-5-[3-(thiophen-3-yl)-1,2,4-oxadiazol-5-yl]-1,2-dihydropyridin-2-one
CAS 1421533-24-5C21H16N4O3S
![N-(2H-1,3-Benzodioxol-5-yl)-2-({2-phenylpyrazolo[1,5-A]pyrazin-4-YL}sulfanyl)acetamide chemical structure, C21H16N4O3S, CAS 1021229-18-4](/s/SUKJQHYZHUTUEC-UHFFFAOYSA-N.svg)
N-(2H-1,3-Benzodioxol-5-yl)-2-({2-phenylpyrazolo[1,5-A]pyrazin-4-YL}sulfanyl)acetamide
CAS 1021229-18-4C21H16N4O3S
![3-((1,1-Dioxido-3-oxo-4-(p-tolyl)-3,4-dihydro-2H-pyrido[2,3-e][1,2,4]thiadiazin-2-yl)methyl)benzonitrile chemical structure, C21H16N4O3S, CAS 1251598-78-3](/s/WRFIYPLDNRFKQK-UHFFFAOYSA-N.svg)
3-((1,1-Dioxido-3-oxo-4-(p-tolyl)-3,4-dihydro-2H-pyrido[2,3-e][1,2,4]thiadiazin-2-yl)methyl)benzonitrile
CAS 1251598-78-3C21H16N4O3S
![N-(4-Oxo-5,6,7,8-tetrahydro-4H-thiazolo[5,4-c]azepin-2-yl)-3-phenylbenzo[c]isoxazole-5-carboxamide chemical structure, C21H16N4O3S, CAS 1798045-74-5](/s/FLYDQJIVEGOVAR-UHFFFAOYSA-N.svg)
N-(4-Oxo-5,6,7,8-tetrahydro-4H-thiazolo[5,4-c]azepin-2-yl)-3-phenylbenzo[c]isoxazole-5-carboxamide
CAS 1798045-74-5C21H16N4O3S
- (E)-5-(((2,5-Diphenylthiazol-4-yl)imino)methyl)-6-hydroxy-3-methylpyrimidine-2,4(1H,3H)-dione685106-25-6C21H16N4O3S
- 2-((6-Oxo-4-phenyl-1,6-dihydropyrimidin-2-yl)thio)-N-(4-phenylisoxazol-5-yl)acetamide1021254-46-5C21H16N4O3S
- 2-Methoxy-N-[[4-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]carbamothioyl]benzamide333741-37-0C21H16N4O3S
- (3Z)-1-Ethyl-3-[2-(4-methoxyphenyl)-6-oxo[1,3]thiazolo[3,2-b][1,2,4]triazol-5(6H)-ylidene]-1,3-dihydro-2H-indol-2-one371213-80-8C21H16N4O3S
- (E)-N-(2-Methyl-1-phenyl-1H-benzo[d]imidazol-5-yl)-3-(5-nitrothiophen-2-yl)acrylamide327971-85-7C21H16N4O3S
- N-(4-Methylbenzo[d]thiazol-2-yl)-4-nitro-N-(pyridin-4-ylmethyl)benzamide923201-61-0C21H16N4O3S
- N-(6-Methylbenzo[d]thiazol-2-yl)-4-nitro-N-(pyridin-4-ylmethyl)benzamide923201-57-4C21H16N4O3S
- N-(6-Methylbenzo[d]thiazol-2-yl)-3-nitro-N-(pyridin-4-ylmethyl)benzamide923146-58-1C21H16N4O3S
- N-(2-(Furan-2-carbonyl)-1,2,3,4-tetrahydroisoquinolin-7-yl)benzo[c][1,2,5]thiadiazole-5-carboxamide1207039-22-2C21H16N4O3S
- 5-Amino-1-(3-hydroxy-2H-1,4-benzoxazin-7-yl)-4-(4-phenyl-1,3-thiazol-2-yl)-1,2-dihydro-3H-pyrrol-3-one1676087-25-4C21H16N4O3S
- 3-Methoxy-N-[(2-pyridin-4-yl-1,3-benzoxazol-5-yl)carbamothioyl]benzamide428462-00-4C21H16N4O3S
- (E)-3-(Furan-2-yl)-N-[[2-methyl-5-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]carbamothioyl]prop-2-enamide429653-33-8C21H16N4O3S
- 3-(2-Furanyl)-5-[[3-(4-nitrophenyl)-2-propen-1-yl]thio]-4-phenyl-4H-1,2,4-triazole341014-02-6C21H16N4O3S
- N-(Naphthalen-1-yl)-2-((1-(4-nitrophenyl)-1H-imidazol-2-yl)thio)acetamide851079-69-1C21H16N4O3S
- N-(6-Methylbenzo[d]thiazol-2-yl)-4-nitro-N-(pyridin-3-ylmethyl)benzamide895006-10-7C21H16N4O3S
- N-(6-Methylbenzo[d]thiazol-2-yl)-3-nitro-N-(pyridin-3-ylmethyl)benzamide895006-17-4C21H16N4O3S
- N-(6-Methylbenzo[d]thiazol-2-yl)-2-nitro-N-(pyridin-3-ylmethyl)benzamide895008-10-3C21H16N4O3S
- N-(4-Methylbenzo[d]thiazol-2-yl)-4-nitro-N-(pyridin-3-ylmethyl)benzamide894997-77-4C21H16N4O3S
- N-(4-Methylbenzo[d]thiazol-2-yl)-3-nitro-N-(pyridin-3-ylmethyl)benzamide894997-84-3C21H16N4O3S
- N-(4-Methylbenzo[d]thiazol-2-yl)-2-nitro-N-(pyridin-3-ylmethyl)benzamide895000-32-5C21H16N4O3S
- N-(4-Methylbenzo[d]thiazol-2-yl)-4-nitro-N-(pyridin-2-ylmethyl)benzamide899964-06-8C21H16N4O3S
- N-(6-Methylbenzo[d]thiazol-2-yl)-4-nitro-N-(pyridin-2-ylmethyl)benzamide899735-52-5C21H16N4O3S
- N-(6-Methylbenzo[d]thiazol-2-yl)-3-nitro-N-(pyridin-2-ylmethyl)benzamide899964-47-7C21H16N4O3S
- (E)-N-(4,7-Dimethoxy-3-(prop-2-yn-1-yl)benzo[d]thiazol-2(3H)-ylidene)quinoxaline-6-carboxamide1173603-89-8C21H16N4O3S
- N-(5-(2,4-Dimethylthiazol-5-yl)-1,3,4-oxadiazol-2-yl)-9H-xanthene-9-carboxamide1251632-22-0C21H16N4O3S
- 3-(5,11-Dioxo-6a,11-dihydroisoindolo[2,1-a]quinazolin-6(5H)-yl)-N-(1,3-thiazol-2-yl)propanamide1630873-33-4C21H16N4O3S
- 2-Methoxy-N-[[3-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]carbamothioyl]benzamide333741-31-4C21H16N4O3S
- Phenothiazine, 10-(((o-nitrobenzylidene)hydrazono)acetyl)-54012-79-2C21H16N4O3S
- Thieno[2,3-c]pyridine-2-carboxamide,4-[4-[[(phenylamino)carbonyl]amino]phenoxy]-870235-10-2C21H16N4O3S
- 6-(1H-1,3-Benzodiazol-1-yl)-N-(2-phenylethenesulfonyl)pyridine-3-carboxamide1445759-04-5C21H16N4O3S
- 4-(3-Phenyl-2,1-benzoxazole-5-carbonyl)-1-(1,3-thiazol-2-yl)piperazin-2-one2309187-38-8C21H16N4O3S
- 2-[(Phenylcarbamoyl)amino]-1,3-benzothiazol-6-yl phenylcarbamate58668-51-2C21H16N4O3S
- 1-Naphthalenecarboxaldehyde, 2-[4,5-dihydro-5-[(2-nitrophenyl)methyl]-4-oxo-2-thiazolyl]hydrazone327062-47-5C21H16N4O3S
- 5-Quinoxalinecarboxamide,3-[4-[(phenylsulfonyl)amino]phenyl]-489458-91-5C21H16N4O3S
- 5-Quinoxalinecarboxamide,3-[3-[(phenylsulfonyl)amino]phenyl]-489459-04-3C21H16N4O3S
Frequently asked questions
What is the molar mass of C21H16N4O3S?
The molar mass of C21H16N4O3S is 404.44 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms, 3 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 404.0943 Da.
How many compounds have the formula C21H16N4O3S?
CompoundList lists 59 compounds with the molecular formula C21H16N4O3S, including (E)-4-(5-(2-Cyano-2-(1-methyl-1H-benzo[d]imidazol-2-yl)vinyl)furan-2-yl)benzenesulfonamide, 1-(Furan-2-ylmethyl)-3-(phenylsulfonyl)-1H-pyrrolo[2,3-b]quinoxalin-2-amine, Ethyl 2-[(2-pyridin-2-ylquinoline-4-carbonyl)amino]-1,3-thiazole-4-carboxylate. 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 C21H16N4O3S?
C21H16N4O3S 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.