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Molecular formula

C21H15NO2S

23 compounds have this formula on CompoundList.

Molar mass
345.42g/mol
Monoisotopic mass
345.0824Da
Atoms
40
Elements
5
Rings plus double bonds
15

The formula C21H15NO2S describes a molecule made of 21 carbon atoms, 15 hydrogen atoms, 1 nitrogen atom, 2 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 × 2173.02%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 154.38%
    1.008 × 15 = 15.120 g/mol
  • N Nitrogen × 14.06%
    14.007 × 1 = 14.007 g/mol
  • O Oxygen × 29.26%
    15.999 × 2 = 31.998 g/mol
  • S Sulfur × 19.28%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C21H15NO2S

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

Showing 1 to 23 of 23 compounds

9-Methyl-2-(4-tolylthio)-1,4-dihydroacridine-1,4-dione chemical structure, C21H15NO2S, CAS 226260-32-8
9-Methyl-2-(4-tolylthio)-1,4-dihydroacridine-1,4-dione
CAS 226260-32-8C21H15NO2S
St1237 chemical structure, C21H15NO2S, CAS 1380593-17-8
St1237
CAS 1380593-17-8C21H15NO2S
6-(2-Methylsulfanylphenyl)benzo[d][2]benzazepine-5,7-dione chemical structure, C21H15NO2S, CAS 533868-04-1
6-(2-Methylsulfanylphenyl)benzo[d][2]benzazepine-5,7-dione
CAS 533868-04-1C21H15NO2S
(E)-3-(Benzo[d]thiazol-2-yl)-4-(naphthalen-2-yl)but-3-enoic acid chemical structure, C21H15NO2S, CAS 745796-60-5
(E)-3-(Benzo[d]thiazol-2-yl)-4-(naphthalen-2-yl)but-3-enoic acid
CAS 745796-60-5C21H15NO2S
2-(4-Phenylbenzoylmethylthio)benzoxazole chemical structure, C21H15NO2S, CAS 341492-74-8
2-(4-Phenylbenzoylmethylthio)benzoxazole
CAS 341492-74-8C21H15NO2S
2-(1,3-Benzoxazol-2-ylsulfanyl)-1,2-diphenylethanone chemical structure, C21H15NO2S, CAS 352564-79-5
2-(1,3-Benzoxazol-2-ylsulfanyl)-1,2-diphenylethanone
CAS 352564-79-5C21H15NO2S
Isoquinolin-1-yl(phenyl)methyl thiophene-2-carboxylate chemical structure, C21H15NO2S, CAS 308294-51-1
Isoquinolin-1-yl(phenyl)methyl thiophene-2-carboxylate
CAS 308294-51-1C21H15NO2S
N-(1-Benzothiophen-5-yl)-2-phenoxybenzamide chemical structure, C21H15NO2S, CAS 477502-82-2
N-(1-Benzothiophen-5-yl)-2-phenoxybenzamide
CAS 477502-82-2C21H15NO2S
2-[(3-Phenoxyphenyl)methylidene]-4H-1,4-benzothiazin-3-one chemical structure, C21H15NO2S, CAS 452949-78-9
2-[(3-Phenoxyphenyl)methylidene]-4H-1,4-benzothiazin-3-one
CAS 452949-78-9C21H15NO2S
(E)-2-[5-(4-Methoxybenzoyl)thiophen-2-yl]-3-phenylprop-2-enenitrile chemical structure, C21H15NO2S, CAS 338966-79-3
(E)-2-[5-(4-Methoxybenzoyl)thiophen-2-yl]-3-phenylprop-2-enenitrile
CAS 338966-79-3C21H15NO2S
5-(Benzenesulfonyl)-5,10-dihydroindeno[1,2-b]indole chemical structure, C21H15NO2S, CAS 60432-54-4
5-(Benzenesulfonyl)-5,10-dihydroindeno[1,2-b]indole
CAS 60432-54-4C21H15NO2S
3-[(4-Phenoxyanilino)methylene]-2-benzothiophen-1(3H)-one chemical structure, C21H15NO2S, CAS 338954-43-1
3-[(4-Phenoxyanilino)methylene]-2-benzothiophen-1(3H)-one
CAS 338954-43-1C21H15NO2S
3-Methyl-N-(9-oxothioxanthen-2-yl)benzamide chemical structure, C21H15NO2S, CAS 478248-53-2
3-Methyl-N-(9-oxothioxanthen-2-yl)benzamide
CAS 478248-53-2C21H15NO2S
4-Methyl-N-(9-oxothioxanthen-2-yl)benzamide chemical structure, C21H15NO2S, CAS 243472-20-0
4-Methyl-N-(9-oxothioxanthen-2-yl)benzamide
CAS 243472-20-0C21H15NO2S
2-[Phenyl(phenylsulfanyl)methyl]-1H-isoindole-1,3(2H)-dione chemical structure, C21H15NO2S, CAS 69177-59-9
2-[Phenyl(phenylsulfanyl)methyl]-1H-isoindole-1,3(2H)-dione
CAS 69177-59-9C21H15NO2S
3-((3-Phenoxyphenyl)methylene)-1,4-dihydro-4-thiaquinolin-2-one chemical structure, C21H15NO2S
3-((3-Phenoxyphenyl)methylene)-1,4-dihydro-4-thiaquinolin-2-one
C21H15NO2S
S-(4-Methylphenyl) 4-(1,3-benzoxazol-2-yl)benzene-1-carbothioate chemical structure, C21H15NO2S, CAS 62572-76-3
S-(4-Methylphenyl) 4-(1,3-benzoxazol-2-yl)benzene-1-carbothioate
CAS 62572-76-3C21H15NO2S
2-[(2-Methylbenzo[h]quinolin-4-yl)sulfanyl]benzoic acid chemical structure, C21H15NO2S, CAS 67218-20-6
2-[(2-Methylbenzo[h]quinolin-4-yl)sulfanyl]benzoic acid
CAS 67218-20-6C21H15NO2S
2-(Benzenesulfinyl)-4,5-diphenyl-1,3-oxazole chemical structure, C21H15NO2S, CAS 62124-62-3
2-(Benzenesulfinyl)-4,5-diphenyl-1,3-oxazole
CAS 62124-62-3C21H15NO2S
1-(4-Methylanilino)-4-sulfanylanthracene-9,10-dione chemical structure, C21H15NO2S, CAS 189753-88-6
1-(4-Methylanilino)-4-sulfanylanthracene-9,10-dione
CAS 189753-88-6C21H15NO2S
2-[5-(4-Methylphenyl)-2-thienyl]-4-quinolinecarboxylic acid chemical structure, C21H15NO2S, CAS 854867-55-3
2-[5-(4-Methylphenyl)-2-thienyl]-4-quinolinecarboxylic acid
CAS 854867-55-3C21H15NO2S
2-[(3-Phenoxyphenyl)methylidene]-3,4-dihydro-2H-1,4-benzothiazin-3-one chemical structure, C21H15NO2S
2-[(3-Phenoxyphenyl)methylidene]-3,4-dihydro-2H-1,4-benzothiazin-3-one
C21H15NO2S
(Z)-1,4-Dioxo-1,4-diphenyl-3-(pyridin-1-ium-1-yl)but-2-ene-2-thiolate chemical structure, C21H15NO2S, CAS 2417676-76-5
(Z)-1,4-Dioxo-1,4-diphenyl-3-(pyridin-1-ium-1-yl)but-2-ene-2-thiolate
CAS 2417676-76-5C21H15NO2S

Frequently asked questions

What is the molar mass of C21H15NO2S?

The molar mass of C21H15NO2S is 345.42 g/mol, calculated from standard atomic weights for 21 carbon atoms, 15 hydrogen atoms, 1 nitrogen atom, 2 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 345.0824 Da.

How many compounds have the formula C21H15NO2S?

CompoundList lists 23 compounds with the molecular formula C21H15NO2S, including 9-Methyl-2-(4-tolylthio)-1,4-dihydroacridine-1,4-dione, St1237, 6-(2-Methylsulfanylphenyl)benzo[d][2]benzazepine-5,7-dione. 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 C21H15NO2S?

C21H15NO2S 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.