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Molecular formula

C21H18N4O2S2

40 compounds have this formula on CompoundList.

Molar mass
422.52g/mol
Monoisotopic mass
422.0871Da
Atoms
47
Elements
5
Rings plus double bonds
15

The formula C21H18N4O2S2 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms, 2 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 × 2159.70%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 184.29%
    1.008 × 18 = 18.144 g/mol
  • N Nitrogen × 413.26%
    14.007 × 4 = 56.028 g/mol
  • O Oxygen × 27.57%
    15.999 × 2 = 31.998 g/mol
  • S Sulfur × 215.18%
    32.06 × 2 = 64.120 g/mol
Look up another formula

Compounds with the formula C21H18N4O2S2

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

Showing 1 to 40 of 40 compounds

N-[2-[(4-Methyl-1,2,4-triazol-3-yl)sulfanyl]-1,2-dihydroacenaphthylen-1-yl]benzenesulfonamide chemical structure, C21H18N4O2S2, CAS 371216-94-3
N-[2-[(4-Methyl-1,2,4-triazol-3-yl)sulfanyl]-1,2-dihydroacenaphthylen-1-yl]benzenesulfonamide
CAS 371216-94-3C21H18N4O2S2
3-((Z)-(3-Benzyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl)-2-(ethylamino)-4H-pyrido(1,2-A)pyrimidin-4-one chemical structure, C21H18N4O2S2, CAS 383904-28-7
3-((Z)-(3-Benzyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl)-2-(ethylamino)-4H-pyrido(1,2-A)pyrimidin-4-one
CAS 383904-28-7C21H18N4O2S2
2-[(1H-Benzimidazol-2-ylmethyl)sulfanyl]-3-(furan-2-ylmethyl)-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-one chemical structure, C21H18N4O2S2, CAS 577996-85-1
2-[(1H-Benzimidazol-2-ylmethyl)sulfanyl]-3-(furan-2-ylmethyl)-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-one
CAS 577996-85-1C21H18N4O2S2
2-{[5-(4-Methoxyphenyl)-2-phenyl-1H-imidazol-4-yl]thio}-N-1,3-thiazol-2-ylacetamide chemical structure, C21H18N4O2S2, CAS 901259-16-3
2-{[5-(4-Methoxyphenyl)-2-phenyl-1H-imidazol-4-yl]thio}-N-1,3-thiazol-2-ylacetamide
CAS 901259-16-3C21H18N4O2S2
2-((3-Cyano-4-(4-methoxyphenyl)-6,7-dihydro-5H-cyclopenta[b]pyridin-2-yl)thio)-N-(thiazol-2-yl)acetamide chemical structure, C21H18N4O2S2, CAS 694461-27-3
2-((3-Cyano-4-(4-methoxyphenyl)-6,7-dihydro-5H-cyclopenta[b]pyridin-2-yl)thio)-N-(thiazol-2-yl)acetamide
CAS 694461-27-3C21H18N4O2S2
4-Methyl-2-phenyl-N-(2-((6-(thiophen-2-yl)pyridazin-3-yl)oxy)ethyl)thiazole-5-carboxamide chemical structure, C21H18N4O2S2, CAS 920378-43-4
4-Methyl-2-phenyl-N-(2-((6-(thiophen-2-yl)pyridazin-3-yl)oxy)ethyl)thiazole-5-carboxamide
CAS 920378-43-4C21H18N4O2S2
2-Methyl-N-(pyridin-3-ylmethyl)-5-(4-sulfanylphthalazin-1-yl)benzenesulfonamide chemical structure, C21H18N4O2S2, CAS 488089-74-3
2-Methyl-N-(pyridin-3-ylmethyl)-5-(4-sulfanylphthalazin-1-yl)benzenesulfonamide
CAS 488089-74-3C21H18N4O2S2
5,5-Bis((((4-cyanophenyl)methyl)thio)methyl)-2,4-imidazolidinedione chemical structure, C21H18N4O2S2, CAS 142979-83-7
5,5-Bis((((4-cyanophenyl)methyl)thio)methyl)-2,4-imidazolidinedione
CAS 142979-83-7C21H18N4O2S2
2-(2-(Benzylthio)-6-oxo-1,6-dihydropyrimidin-4-yl)-N-(4-methylbenzo[d]thiazol-2-yl)acetamide chemical structure, C21H18N4O2S2, CAS 1105235-81-1
2-(2-(Benzylthio)-6-oxo-1,6-dihydropyrimidin-4-yl)-N-(4-methylbenzo[d]thiazol-2-yl)acetamide
CAS 1105235-81-1C21H18N4O2S2
6-Amino-2-(2-oxo-2-phenothiazin-10-ylethyl)sulfanyl-1-prop-2-enylpyrimidin-4-one chemical structure, C21H18N4O2S2, CAS 496018-11-2
6-Amino-2-(2-oxo-2-phenothiazin-10-ylethyl)sulfanyl-1-prop-2-enylpyrimidin-4-one
CAS 496018-11-2C21H18N4O2S2
1-Benzoyl-3-([1,2,4]triazolo[3,4-b][1,3]benzothiazol-1-ylsulfanyl)azepan-2-one chemical structure, C21H18N4O2S2, CAS 326025-31-4
1-Benzoyl-3-([1,2,4]triazolo[3,4-b][1,3]benzothiazol-1-ylsulfanyl)azepan-2-one
CAS 326025-31-4C21H18N4O2S2
2-{[4-Methyl-5-(thiophen-2-yl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N-(4-phenoxyphenyl)acetamide chemical structure, C21H18N4O2S2, CAS 573694-30-1
2-{[4-Methyl-5-(thiophen-2-yl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N-(4-phenoxyphenyl)acetamide
CAS 573694-30-1C21H18N4O2S2
N-(5-((2-(Indolin-1-yl)-2-oxoethyl)thio)-1,3,4-thiadiazol-2-yl)cinnamamide chemical structure, C21H18N4O2S2, CAS 392300-65-1
N-(5-((2-(Indolin-1-yl)-2-oxoethyl)thio)-1,3,4-thiadiazol-2-yl)cinnamamide
CAS 392300-65-1C21H18N4O2S2
3-Amino-N-(benzo[d]thiazol-2-yl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydrothieno[2,3-b]quinoline-2-carboxamide chemical structure, C21H18N4O2S2, CAS 489424-54-6
3-Amino-N-(benzo[d]thiazol-2-yl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydrothieno[2,3-b]quinoline-2-carboxamide
CAS 489424-54-6C21H18N4O2S2
N-(4-(5-((4-Methoxyphenyl)(methyl)amino)-1,3,4-thiadiazol-2-yl)phenyl)thiophene-2-carboxamide chemical structure, C21H18N4O2S2, CAS 1021092-85-2
N-(4-(5-((4-Methoxyphenyl)(methyl)amino)-1,3,4-thiadiazol-2-yl)phenyl)thiophene-2-carboxamide
CAS 1021092-85-2C21H18N4O2S2
(2-Phenylthiazol-4-yl)(3-(5-(thiophen-3-yl)-1,3,4-oxadiazol-2-yl)piperidin-1-yl)methanone chemical structure, C21H18N4O2S2, CAS 1797736-57-2
(2-Phenylthiazol-4-yl)(3-(5-(thiophen-3-yl)-1,3,4-oxadiazol-2-yl)piperidin-1-yl)methanone
CAS 1797736-57-2C21H18N4O2S2
3-[(Z)-(3-Benzyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-9-methyl-2-(methylamino)-4H-pyrido[1,2-a]pyrimidin-4-one chemical structure, C21H18N4O2S2, CAS 385388-72-7
3-[(Z)-(3-Benzyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-9-methyl-2-(methylamino)-4H-pyrido[1,2-a]pyrimidin-4-one
CAS 385388-72-7C21H18N4O2S2
2-(Benzylamino)-3-[(Z)-(3-ethyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-4H-pyrido[1,2-a]pyrimidin-4-one chemical structure, C21H18N4O2S2, CAS 432009-21-7
2-(Benzylamino)-3-[(Z)-(3-ethyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-4H-pyrido[1,2-a]pyrimidin-4-one
CAS 432009-21-7C21H18N4O2S2
3-[(Z)-(3-Methyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-2-[(2-phenylethyl)amino]-4H-pyrido[1,2-a]pyrimidin-4-one chemical structure, C21H18N4O2S2, CAS 385389-85-5
3-[(Z)-(3-Methyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-2-[(2-phenylethyl)amino]-4H-pyrido[1,2-a]pyrimidin-4-one
CAS 385389-85-5C21H18N4O2S2
3-(1,3-Benzodioxol-5-yl)-4-methyl-5-({[2-(4-methylphenyl)-1,3-thiazol-4-yl]methyl}sulfanyl)-4H-1,2,4-triazole chemical structure, C21H18N4O2S2, CAS 886633-88-1
3-(1,3-Benzodioxol-5-yl)-4-methyl-5-({[2-(4-methylphenyl)-1,3-thiazol-4-yl]methyl}sulfanyl)-4H-1,2,4-triazole
CAS 886633-88-1C21H18N4O2S2
3-({[2-(1,3-Benzodioxol-5-yl)-1,3-thiazol-4-yl]methyl}sulfanyl)-4-ethyl-5-phenyl-4H-1,2,4-triazole chemical structure, C21H18N4O2S2, CAS 891275-59-5
3-({[2-(1,3-Benzodioxol-5-yl)-1,3-thiazol-4-yl]methyl}sulfanyl)-4-ethyl-5-phenyl-4H-1,2,4-triazole
CAS 891275-59-5C21H18N4O2S2
N-(Furan-2-ylmethyl)-2-((6-(4-methyl-2-phenylthiazol-5-yl)pyridazin-3-yl)thio)acetamide chemical structure, C21H18N4O2S2, CAS 895458-76-1
N-(Furan-2-ylmethyl)-2-((6-(4-methyl-2-phenylthiazol-5-yl)pyridazin-3-yl)thio)acetamide
CAS 895458-76-1C21H18N4O2S2
2-(Benzylamino)-9-methyl-3-[(Z)-(3-methyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-4H-pyrido[1,2-a]pyrimidin-4-one chemical structure, C21H18N4O2S2, CAS 384797-00-6
2-(Benzylamino)-9-methyl-3-[(Z)-(3-methyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-4H-pyrido[1,2-a]pyrimidin-4-one
CAS 384797-00-6C21H18N4O2S2
2-(Methylamino)-3-{(Z)-[4-oxo-3-(2-phenylethyl)-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-a]pyrimidin-4-one chemical structure, C21H18N4O2S2, CAS 384376-75-4
2-(Methylamino)-3-{(Z)-[4-oxo-3-(2-phenylethyl)-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-a]pyrimidin-4-one
CAS 384376-75-4C21H18N4O2S2

Frequently asked questions

What is the molar mass of C21H18N4O2S2?

The molar mass of C21H18N4O2S2 is 422.52 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms, 2 oxygen atoms and 2 sulfur atoms. The monoisotopic mass is 422.0871 Da.

How many compounds have the formula C21H18N4O2S2?

CompoundList lists 40 compounds with the molecular formula C21H18N4O2S2, including N-[2-[(4-Methyl-1,2,4-triazol-3-yl)sulfanyl]-1,2-dihydroacenaphthylen-1-yl]benzenesulfonamide, 3-((Z)-(3-Benzyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl)-2-(ethylamino)-4H-pyrido(1,2-A)pyrimidin-4-one, 2-[(1H-Benzimidazol-2-ylmethyl)sulfanyl]-3-(furan-2-ylmethyl)-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-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 C21H18N4O2S2?

C21H18N4O2S2 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.