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Molecular formula

C18H20N4O4S2

43 compounds have this formula on CompoundList.

Molar mass
420.50g/mol
Monoisotopic mass
420.0926Da
Atoms
48
Elements
5
Rings plus double bonds
11

The formula C18H20N4O4S2 describes a molecule made of 18 carbon atoms, 20 hydrogen atoms, 4 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 × 1851.41%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 204.79%
    1.008 × 20 = 20.160 g/mol
  • N Nitrogen × 413.32%
    14.007 × 4 = 56.028 g/mol
  • O Oxygen × 415.22%
    15.999 × 4 = 63.996 g/mol
  • S Sulfur × 215.25%
    32.06 × 2 = 64.120 g/mol
Look up another formula

Compounds with the formula C18H20N4O4S2

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

Showing 1 to 43 of 43 compounds

2-[(2-Methoxyethyl)amino]-3-{(Z)-[3-(2-methoxyethyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-A]pyrimidin-4-one chemical structure, C18H20N4O4S2, CAS 381187-17-3
2-[(2-Methoxyethyl)amino]-3-{(Z)-[3-(2-methoxyethyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-A]pyrimidin-4-one
CAS 381187-17-3C18H20N4O4S2
3-[4-(2,5-Dimethoxyphenyl)-5-sulfanyl-4H-1,2,4-triazol-3-yl]-N,N-dimethylbenzene-1-sulfonamide chemical structure, C18H20N4O4S2, CAS 380437-00-3
3-[4-(2,5-Dimethoxyphenyl)-5-sulfanyl-4H-1,2,4-triazol-3-yl]-N,N-dimethylbenzene-1-sulfonamide
CAS 380437-00-3C18H20N4O4S2
1-N',4-N'-bis(thiophene-2-carbonyl)cyclohexane-1,4-dicarbohydrazide chemical structure, C18H20N4O4S2, CAS 817567-31-0
1-N',4-N'-bis(thiophene-2-carbonyl)cyclohexane-1,4-dicarbohydrazide
CAS 817567-31-0C18H20N4O4S2
N-(5-{[2-(1,3-Dioxolan-2-yl)ethyl]sulfanyl}-1,3,4-thiadiazol-2-yl)-5-oxo-1-phenylpyrrolidine-3-carboxamide chemical structure, C18H20N4O4S2, CAS 893942-97-7
N-(5-{[2-(1,3-Dioxolan-2-yl)ethyl]sulfanyl}-1,3,4-thiadiazol-2-yl)-5-oxo-1-phenylpyrrolidine-3-carboxamide
CAS 893942-97-7C18H20N4O4S2
2-((3-Hydroxypropyl)amino)-3-((E)-(3-(2-methoxyethyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl)-4H-pyrido(1,2-A)pyrimidin-4-one chemical structure, C18H20N4O4S2, CAS 381707-35-3
2-((3-Hydroxypropyl)amino)-3-((E)-(3-(2-methoxyethyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl)-4H-pyrido(1,2-A)pyrimidin-4-one
CAS 381707-35-3C18H20N4O4S2
N-Benzyl-4-(4-nitrophenyl)sulfonylpiperazine-1-carbothioamide chemical structure, C18H20N4O4S2, CAS 774546-21-3
N-Benzyl-4-(4-nitrophenyl)sulfonylpiperazine-1-carbothioamide
CAS 774546-21-3C18H20N4O4S2
N-(5-((2-(Benzo[d][1,3]dioxol-5-ylamino)-2-oxoethyl)thio)-1,3,4-thiadiazol-2-yl)cyclohexanecarboxamide chemical structure, C18H20N4O4S2, CAS 868972-86-5
N-(5-((2-(Benzo[d][1,3]dioxol-5-ylamino)-2-oxoethyl)thio)-1,3,4-thiadiazol-2-yl)cyclohexanecarboxamide
CAS 868972-86-5C18H20N4O4S2
2-(1-(1,1-Dioxidotetrahydrothiophen-3-yl)-3,5-dimethyl-1H-pyrazol-4-yl)-N-(4-(furan-2-yl)thiazol-2-yl)acetamide chemical structure, C18H20N4O4S2, CAS 1207004-97-4
2-(1-(1,1-Dioxidotetrahydrothiophen-3-yl)-3,5-dimethyl-1H-pyrazol-4-yl)-N-(4-(furan-2-yl)thiazol-2-yl)acetamide
CAS 1207004-97-4C18H20N4O4S2
N-(3-Methanesulfonamidophenyl)-2-[(4-methoxy-1,3-benzothiazol-2-yl)(methyl)amino]acetamide chemical structure, C18H20N4O4S2, CAS 1351611-89-6
N-(3-Methanesulfonamidophenyl)-2-[(4-methoxy-1,3-benzothiazol-2-yl)(methyl)amino]acetamide
CAS 1351611-89-6C18H20N4O4S2
Ethyl 2-(2-(2-(5-oxo-2,3,5,6,7,8-hexahydrocyclopenta[d]thiazolo[3,2-a]pyrimidin-3-yl)acetamido)thiazol-4-yl)acetate chemical structure, C18H20N4O4S2, CAS 1021217-41-3
Ethyl 2-(2-(2-(5-oxo-2,3,5,6,7,8-hexahydrocyclopenta[d]thiazolo[3,2-a]pyrimidin-3-yl)acetamido)thiazol-4-yl)acetate
CAS 1021217-41-3C18H20N4O4S2
Ethanol, 2,2'-((4-(2-(6-(methylsulfonyl)-2-benzothiazolyl)diazenyl)phenyl)imino)bis- chemical structure, C18H20N4O4S2, CAS 63467-02-7
Ethanol, 2,2'-((4-(2-(6-(methylsulfonyl)-2-benzothiazolyl)diazenyl)phenyl)imino)bis-
CAS 63467-02-7C18H20N4O4S2
(Z)-5-((2-((2-Hydroxyethyl)(methyl)amino)-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-3-(2-methoxyethyl)-2-thioxothiazolidin-4-one chemical structure, C18H20N4O4S2, CAS 386767-43-7
(Z)-5-((2-((2-Hydroxyethyl)(methyl)amino)-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-3-(2-methoxyethyl)-2-thioxothiazolidin-4-one
CAS 386767-43-7C18H20N4O4S2
(Z)-3-Ethyl-5-((2-((2-(2-hydroxyethoxy)ethyl)amino)-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-2-thioxothiazolidin-4-one chemical structure, C18H20N4O4S2, CAS 497230-77-0
(Z)-3-Ethyl-5-((2-((2-(2-hydroxyethoxy)ethyl)amino)-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-2-thioxothiazolidin-4-one
CAS 497230-77-0C18H20N4O4S2
(Z)-5-((2-((2-Hydroxyethyl)amino)-7-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-3-(2-methoxyethyl)-2-thioxothiazolidin-4-one chemical structure, C18H20N4O4S2, CAS 499118-76-2
(Z)-5-((2-((2-Hydroxyethyl)amino)-7-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-3-(2-methoxyethyl)-2-thioxothiazolidin-4-one
CAS 499118-76-2C18H20N4O4S2
(Z)-5-((2-((2-(2-Hydroxyethoxy)ethyl)amino)-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-3-methyl-2-thioxothiazolidin-4-one chemical structure, C18H20N4O4S2, CAS 488733-57-9
(Z)-5-((2-((2-(2-Hydroxyethoxy)ethyl)amino)-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-3-methyl-2-thioxothiazolidin-4-one
CAS 488733-57-9C18H20N4O4S2
(Z)-5-((2-((2-(2-Hydroxyethoxy)ethyl)amino)-7-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-3-methyl-2-thioxothiazolidin-4-one chemical structure, C18H20N4O4S2, CAS 615279-03-3
(Z)-5-((2-((2-(2-Hydroxyethoxy)ethyl)amino)-7-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-3-methyl-2-thioxothiazolidin-4-one
CAS 615279-03-3C18H20N4O4S2
2-(2-Phenoxyethyl)-6-(thiomorpholin-4-ylsulfonyl)[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one chemical structure, C18H20N4O4S2, CAS 1251576-88-1
2-(2-Phenoxyethyl)-6-(thiomorpholin-4-ylsulfonyl)[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one
CAS 1251576-88-1C18H20N4O4S2
3-Methyl-2-((p-(N-methylanilino)phenyl)azo)thiazolium methyl sulphate chemical structure, C18H20N4O4S2, CAS 57583-74-1
3-Methyl-2-((p-(N-methylanilino)phenyl)azo)thiazolium methyl sulphate
CAS 57583-74-1C18H20N4O4S2
4-(N,N-Diethylsulfamoyl)-N-(5-(thiophen-2-ylmethyl)-1,3,4-oxadiazol-2-yl)benzamide chemical structure, C18H20N4O4S2, CAS 1021112-72-0
4-(N,N-Diethylsulfamoyl)-N-(5-(thiophen-2-ylmethyl)-1,3,4-oxadiazol-2-yl)benzamide
CAS 1021112-72-0C18H20N4O4S2
Ethyl 2-(7-methyl-6-oxo-2,3,4,6-tetrahydropyrimido[2,1-b][1,3]thiazine-3-carboxamido)-5,6-dihydro-4H-cyclopenta[d]thiazole-4-carboxylate chemical structure, C18H20N4O4S2, CAS 1396758-88-5
Ethyl 2-(7-methyl-6-oxo-2,3,4,6-tetrahydropyrimido[2,1-b][1,3]thiazine-3-carboxamido)-5,6-dihydro-4H-cyclopenta[d]thiazole-4-carboxylate
CAS 1396758-88-5C18H20N4O4S2
N-(5-((2-(Cyclohexylamino)-2-oxoethyl)thio)-1,3,4-thiadiazol-2-yl)benzo[d][1,3]dioxole-5-carboxamide chemical structure, C18H20N4O4S2, CAS 868973-90-4
N-(5-((2-(Cyclohexylamino)-2-oxoethyl)thio)-1,3,4-thiadiazol-2-yl)benzo[d][1,3]dioxole-5-carboxamide
CAS 868973-90-4C18H20N4O4S2
2-[Acetyl(2-methoxyethyl)amino]-N-[(2E)-6-methoxy-1,3-benzothiazol-2(3H)-ylidene]-4-methyl-1,3-thiazole-5-carboxamide chemical structure, C18H20N4O4S2, CAS 1224173-42-5
2-[Acetyl(2-methoxyethyl)amino]-N-[(2E)-6-methoxy-1,3-benzothiazol-2(3H)-ylidene]-4-methyl-1,3-thiazole-5-carboxamide
CAS 1224173-42-5C18H20N4O4S2
4-{[(2-Cyano-4,5-dimethoxyanilino)carbothioyl]amino}-N,N-dimethylbenzenesulfonamide chemical structure, C18H20N4O4S2, CAS 692287-56-2
4-{[(2-Cyano-4,5-dimethoxyanilino)carbothioyl]amino}-N,N-dimethylbenzenesulfonamide
CAS 692287-56-2C18H20N4O4S2
2-[(2-Hydroxyethyl)amino]-3-{(Z)-[3-(2-methoxyethyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-9-methyl-4H-pyrido[1,2-a]pyrimidin-4-one chemical structure, C18H20N4O4S2, CAS 432528-10-4
2-[(2-Hydroxyethyl)amino]-3-{(Z)-[3-(2-methoxyethyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-9-methyl-4H-pyrido[1,2-a]pyrimidin-4-one
CAS 432528-10-4C18H20N4O4S2

Frequently asked questions

What is the molar mass of C18H20N4O4S2?

The molar mass of C18H20N4O4S2 is 420.50 g/mol, calculated from standard atomic weights for 18 carbon atoms, 20 hydrogen atoms, 4 nitrogen atoms, 4 oxygen atoms and 2 sulfur atoms. The monoisotopic mass is 420.0926 Da.

How many compounds have the formula C18H20N4O4S2?

CompoundList lists 43 compounds with the molecular formula C18H20N4O4S2, including 2-[(2-Methoxyethyl)amino]-3-{(Z)-[3-(2-methoxyethyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-A]pyrimidin-4-one, 3-[4-(2,5-Dimethoxyphenyl)-5-sulfanyl-4H-1,2,4-triazol-3-yl]-N,N-dimethylbenzene-1-sulfonamide, 1-N',4-N'-bis(thiophene-2-carbonyl)cyclohexane-1,4-dicarbohydrazide. 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 C18H20N4O4S2?

C18H20N4O4S2 has a degree of unsaturation of 11. 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.