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Molecular formula

C21H17N3O4S2

28 compounds have this formula on CompoundList.

Molar mass
439.50g/mol
Monoisotopic mass
439.0660Da
Atoms
47
Elements
5
Rings plus double bonds
15

The formula C21H17N3O4S2 describes a molecule made of 21 carbon atoms, 17 hydrogen atoms, 3 nitrogen atoms, 4 oxygen atoms and 2 sulfur 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 × 2157.39%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 173.90%
    1.008 × 17 = 17.136 g/mol
  • N Nitrogen × 39.56%
    14.007 × 3 = 42.021 g/mol
  • O Oxygen × 414.56%
    15.999 × 4 = 63.996 g/mol
  • S Sulfur × 214.59%
    32.06 × 2 = 64.120 g/mol
Look up another formula

Compounds with the formula C21H17N3O4S2

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

Showing 1 to 28 of 28 compounds

N-[2-Methyl-5-(2-thiazolo[5,4-b]pyridinyl)phenyl]-2,3-dihydro-1,4-benzodioxin-6-sulfonamide chemical structure, C21H17N3O4S2, CAS 896679-71-3
N-[2-Methyl-5-(2-thiazolo[5,4-b]pyridinyl)phenyl]-2,3-dihydro-1,4-benzodioxin-6-sulfonamide
CAS 896679-71-3C21H17N3O4S2
2-(Naphthalen-2-yloxy)-N-[4-(1,3-thiazol-2-ylsulfamoyl)phenyl]acetamide chemical structure, C21H17N3O4S2, CAS 302951-79-7
2-(Naphthalen-2-yloxy)-N-[4-(1,3-thiazol-2-ylsulfamoyl)phenyl]acetamide
CAS 302951-79-7C21H17N3O4S2
N-(2-Methyl-4-(thiazolo[5,4-b]pyridin-2-yl)phenyl)-2,3-dihydrobenzo[b][1,4]dioxine-6-sulfonamide chemical structure, C21H17N3O4S2, CAS 896679-27-9
N-(2-Methyl-4-(thiazolo[5,4-b]pyridin-2-yl)phenyl)-2,3-dihydrobenzo[b][1,4]dioxine-6-sulfonamide
CAS 896679-27-9C21H17N3O4S2
3-Hydroxy-1-(5-methyl-1,3,4-thiadiazol-2-yl)-5-[4-(prop-2-en-1-yloxy)phenyl]-4-(thiophen-2-ylcarbonyl)-1,5-dihydro-2H-pyrrol-2-one chemical structure, C21H17N3O4S2, CAS 432002-66-9
3-Hydroxy-1-(5-methyl-1,3,4-thiadiazol-2-yl)-5-[4-(prop-2-en-1-yloxy)phenyl]-4-(thiophen-2-ylcarbonyl)-1,5-dihydro-2H-pyrrol-2-one
CAS 432002-66-9C21H17N3O4S2
2-((4-Aminobenzoyl)amino)-5-(6-methyl-2-benzothiazolyl)benzenesulfonic acid chemical structure, C21H17N3O4S2, CAS 7147-36-6
2-((4-Aminobenzoyl)amino)-5-(6-methyl-2-benzothiazolyl)benzenesulfonic acid
CAS 7147-36-6C21H17N3O4S2
N-(Benzo[d][1,3]dioxol-5-yl)-2-((4-oxo-3-phenyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide chemical structure, C21H17N3O4S2, CAS 686770-51-4
N-(Benzo[d][1,3]dioxol-5-yl)-2-((4-oxo-3-phenyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide
CAS 686770-51-4C21H17N3O4S2
3-Benzenesulfonamido-N-(4-methoxy-1,3-benzothiazol-2-yl)benzamide chemical structure, C21H17N3O4S2, CAS 886890-78-4
3-Benzenesulfonamido-N-(4-methoxy-1,3-benzothiazol-2-yl)benzamide
CAS 886890-78-4C21H17N3O4S2
2-(1,3-Benzothiazol-2-ylsulfanyl)-N-{[5-(2,3-dihydro-1,4-benzodioxin-6-yl)-1,2-oxazol-3-yl]methyl}acetamide chemical structure, C21H17N3O4S2, CAS 1207060-04-5
2-(1,3-Benzothiazol-2-ylsulfanyl)-N-{[5-(2,3-dihydro-1,4-benzodioxin-6-yl)-1,2-oxazol-3-yl]methyl}acetamide
CAS 1207060-04-5C21H17N3O4S2
2-Hydroxy-N'-(2-((Z)-4-oxo-5-((E)-3-phenylallylidene)-2-thioxothiazolidin-3-yl)acetyl)benzohydrazide chemical structure, C21H17N3O4S2, CAS 682765-61-3
2-Hydroxy-N'-(2-((Z)-4-oxo-5-((E)-3-phenylallylidene)-2-thioxothiazolidin-3-yl)acetyl)benzohydrazide
CAS 682765-61-3C21H17N3O4S2
4-Acetyl-N-(3-(7-methyl-5-oxo-5H-thiazolo[3,2-a]pyrimidin-3-yl)phenyl)benzenesulfonamide chemical structure, C21H17N3O4S2, CAS 1021116-70-0
4-Acetyl-N-(3-(7-methyl-5-oxo-5H-thiazolo[3,2-a]pyrimidin-3-yl)phenyl)benzenesulfonamide
CAS 1021116-70-0C21H17N3O4S2
N-(1,3-Benzothiazol-2-yl)-4-(4-methoxybenzenesulfonamido)benzamide chemical structure, C21H17N3O4S2, CAS 886910-78-7
N-(1,3-Benzothiazol-2-yl)-4-(4-methoxybenzenesulfonamido)benzamide
CAS 886910-78-7C21H17N3O4S2
N-(1,3-Benzothiazol-2-yl)-3-(4-methoxybenzenesulfonamido)benzamide chemical structure, C21H17N3O4S2, CAS 886898-75-5
N-(1,3-Benzothiazol-2-yl)-3-(4-methoxybenzenesulfonamido)benzamide
CAS 886898-75-5C21H17N3O4S2
N-[3-(1,3-Benzothiazol-2-yl)-6-methyl-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-5-nitrofuran-2-carboxamide chemical structure, C21H17N3O4S2, CAS 477544-61-9
N-[3-(1,3-Benzothiazol-2-yl)-6-methyl-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-5-nitrofuran-2-carboxamide
CAS 477544-61-9C21H17N3O4S2
2-Naphthalen-1-yloxy-N-[4-(1,3-thiazol-2-ylsulfamoyl)phenyl]acetamide chemical structure, C21H17N3O4S2, CAS 443638-31-1
2-Naphthalen-1-yloxy-N-[4-(1,3-thiazol-2-ylsulfamoyl)phenyl]acetamide
CAS 443638-31-1C21H17N3O4S2
3-Methoxy-N-(4-(N-(thiazol-2-yl)sulfamoyl)phenyl)-2-naphthamide chemical structure, C21H17N3O4S2, CAS 299952-47-9
3-Methoxy-N-(4-(N-(thiazol-2-yl)sulfamoyl)phenyl)-2-naphthamide
CAS 299952-47-9C21H17N3O4S2
(Z)-1-(4-(Methylsulfonyl)phenyl)-3-(2-oxo-3-(thiophen-2-ylmethylene)indolin-5-yl)urea chemical structure, C21H17N3O4S2, CAS 1821481-34-8
(Z)-1-(4-(Methylsulfonyl)phenyl)-3-(2-oxo-3-(thiophen-2-ylmethylene)indolin-5-yl)urea
CAS 1821481-34-8C21H17N3O4S2
Ethyl 4-oxo-5-(thiophene-2-carboxamido)-3-(p-tolyl)-3,4-dihydrothieno[3,4-d]pyridazine-1-carboxylate chemical structure, C21H17N3O4S2, CAS 851948-76-0
Ethyl 4-oxo-5-(thiophene-2-carboxamido)-3-(p-tolyl)-3,4-dihydrothieno[3,4-d]pyridazine-1-carboxylate
CAS 851948-76-0C21H17N3O4S2
Ethyl 4-oxo-3-phenyl-5-(2-(thiophen-2-yl)acetamido)-3,4-dihydrothieno[3,4-d]pyridazine-1-carboxylate chemical structure, C21H17N3O4S2, CAS 851947-65-4
Ethyl 4-oxo-3-phenyl-5-(2-(thiophen-2-yl)acetamido)-3,4-dihydrothieno[3,4-d]pyridazine-1-carboxylate
CAS 851947-65-4C21H17N3O4S2
(4E)-4-[Furan-2-yl(hydroxy)methylidene]-5-(4-methylphenyl)-1-[5-(prop-2-en-1-ylsulfanyl)-1,3,4-thiadiazol-2-yl]pyrrolidine-2,3-dione chemical structure, C21H17N3O4S2, CAS 873682-12-3
(4E)-4-[Furan-2-yl(hydroxy)methylidene]-5-(4-methylphenyl)-1-[5-(prop-2-en-1-ylsulfanyl)-1,3,4-thiadiazol-2-yl]pyrrolidine-2,3-dione
CAS 873682-12-3C21H17N3O4S2
2-Hydroxy-N-[(5Z)-4-oxo-5-(2-oxo-1-propyl-1,2-dihydro-3H-indol-3-ylidene)-2-thioxo-1,3-thiazolidin-3-yl]benzamide chemical structure, C21H17N3O4S2, CAS 374095-45-1
2-Hydroxy-N-[(5Z)-4-oxo-5-(2-oxo-1-propyl-1,2-dihydro-3H-indol-3-ylidene)-2-thioxo-1,3-thiazolidin-3-yl]benzamide
CAS 374095-45-1C21H17N3O4S2
N-(4-Methoxybenzo[d]thiazol-2-yl)-4-(phenylsulfonamido)benzamide chemical structure, C21H17N3O4S2, CAS 886900-85-2
N-(4-Methoxybenzo[d]thiazol-2-yl)-4-(phenylsulfonamido)benzamide
CAS 886900-85-2C21H17N3O4S2
N-(2-((3-(Thiophen-2-yl)-1,2,4-oxadiazol-5-yl)methyl)phenyl)-2,3-dihydrobenzofuran-5-sulfonamide chemical structure, C21H17N3O4S2, CAS 1706029-74-4
N-(2-((3-(Thiophen-2-yl)-1,2,4-oxadiazol-5-yl)methyl)phenyl)-2,3-dihydrobenzofuran-5-sulfonamide
CAS 1706029-74-4C21H17N3O4S2
4-Benzenesulfonamido-N-(6-methoxy-1,3-benzothiazol-2-yl)benzamide chemical structure, C21H17N3O4S2, CAS 886900-80-7
4-Benzenesulfonamido-N-(6-methoxy-1,3-benzothiazol-2-yl)benzamide
CAS 886900-80-7C21H17N3O4S2
N-(6-Ethoxy-1,3-benzothiazol-2-yl)-1-methyl-2-oxo-1,2-dihydrobenzo[cd]indole-6-sulfonamide chemical structure, C21H17N3O4S2, CAS 714263-11-3
N-(6-Ethoxy-1,3-benzothiazol-2-yl)-1-methyl-2-oxo-1,2-dihydrobenzo[cd]indole-6-sulfonamide
CAS 714263-11-3C21H17N3O4S2

Frequently asked questions

What is the molar mass of C21H17N3O4S2?

The molar mass of C21H17N3O4S2 is 439.50 g/mol, calculated from standard atomic weights for 21 carbon atoms, 17 hydrogen atoms, 3 nitrogen atoms, 4 oxygen atoms and 2 sulfur atoms. The monoisotopic mass is 439.0660 Da.

How many compounds have the formula C21H17N3O4S2?

CompoundList lists 28 compounds with the molecular formula C21H17N3O4S2, including N-[2-Methyl-5-(2-thiazolo[5,4-b]pyridinyl)phenyl]-2,3-dihydro-1,4-benzodioxin-6-sulfonamide, 2-(Naphthalen-2-yloxy)-N-[4-(1,3-thiazol-2-ylsulfamoyl)phenyl]acetamide, N-(2-Methyl-4-(thiazolo[5,4-b]pyridin-2-yl)phenyl)-2,3-dihydrobenzo[b][1,4]dioxine-6-sulfonamide. 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 C21H17N3O4S2?

C21H17N3O4S2 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.