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Molecular formula

C18H13NO3S

28 compounds have this formula on CompoundList.

Molar mass
323.37g/mol
Monoisotopic mass
323.0616Da
Atoms
36
Elements
5
Rings plus double bonds
13

The formula C18H13NO3S describes a molecule made of 18 carbon atoms, 13 hydrogen atoms, 1 nitrogen atom, 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 × 1866.86%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 134.05%
    1.008 × 13 = 13.104 g/mol
  • N Nitrogen × 14.33%
    14.007 × 1 = 14.007 g/mol
  • O Oxygen × 314.84%
    15.999 × 3 = 47.997 g/mol
  • S Sulfur × 19.91%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C18H13NO3S

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

Showing 1 to 28 of 28 compounds

Dibenzofuran, 2-methoxy-3-(2-thiophenecarboxamido)- chemical structure, C18H13NO3S, CAS 302548-67-0
Dibenzofuran, 2-methoxy-3-(2-thiophenecarboxamido)-
CAS 302548-67-0C18H13NO3S
2-Benzamido-5-phenylthiophene-3-carboxylic acid chemical structure, C18H13NO3S, CAS 380646-20-8
2-Benzamido-5-phenylthiophene-3-carboxylic acid
CAS 380646-20-8C18H13NO3S
2-(1-Benzofuran-2-yl)-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d][1,3]oxazin-4-one chemical structure, C18H13NO3S, CAS 433696-79-8
2-(1-Benzofuran-2-yl)-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d][1,3]oxazin-4-one
CAS 433696-79-8C18H13NO3S
1-(1,3-Benzodioxol-5-yl)-2-(2-quinolinylthio)ethanone chemical structure, C18H13NO3S, CAS 690642-95-6
1-(1,3-Benzodioxol-5-yl)-2-(2-quinolinylthio)ethanone
CAS 690642-95-6C18H13NO3S
1-(12,12-Dioxobenzo[c]phenothiazin-7-yl)ethanone chemical structure, C18H13NO3S, CAS 1236-60-8
1-(12,12-Dioxobenzo[c]phenothiazin-7-yl)ethanone
CAS 1236-60-8C18H13NO3S
1-(4-Methylphenyl)sulfonylbenzo[cd]indol-2-one chemical structure, C18H13NO3S, CAS 119200-14-5
1-(4-Methylphenyl)sulfonylbenzo[cd]indol-2-one
CAS 119200-14-5C18H13NO3S
3-(1,3-Benzothiazol-2-yl)-6-ethyl-7-hydroxychromen-4-one chemical structure, C18H13NO3S, CAS 222716-11-2
3-(1,3-Benzothiazol-2-yl)-6-ethyl-7-hydroxychromen-4-one
CAS 222716-11-2C18H13NO3S
3-(1,3-Benzothiazol-2-yl)-8-ethoxy-2H-chromen-2-one chemical structure, C18H13NO3S, CAS 325799-82-4
3-(1,3-Benzothiazol-2-yl)-8-ethoxy-2H-chromen-2-one
CAS 325799-82-4C18H13NO3S
2-(Naphthalen-1-ylmethyl)-1,1-dioxo-1,2-benzothiazol-3-one chemical structure, C18H13NO3S, CAS 41335-58-4
2-(Naphthalen-1-ylmethyl)-1,1-dioxo-1,2-benzothiazol-3-one
CAS 41335-58-4C18H13NO3S
(Z)-3-(2H-Chromen-3-yl)-2-(phenylsulfonyl)acrylonitrile chemical structure, C18H13NO3S, CAS 797809-82-6
(Z)-3-(2H-Chromen-3-yl)-2-(phenylsulfonyl)acrylonitrile
CAS 797809-82-6C18H13NO3S
N-(Benzo[b]thiophen-5-yl)-7-methoxybenzofuran-2-carboxamide chemical structure, C18H13NO3S, CAS 921799-44-2
N-(Benzo[b]thiophen-5-yl)-7-methoxybenzofuran-2-carboxamide
CAS 921799-44-2C18H13NO3S
3-(1,3-Benzothiazol-2-yl)-7-ethoxy-2H-chromen-2-one chemical structure, C18H13NO3S, CAS 307551-81-1
3-(1,3-Benzothiazol-2-yl)-7-ethoxy-2H-chromen-2-one
CAS 307551-81-1C18H13NO3S
3-(1,3-Benzothiazol-2-yl)-7-ethoxy-4H-chromen-4-one chemical structure, C18H13NO3S, CAS 307551-65-1
3-(1,3-Benzothiazol-2-yl)-7-ethoxy-4H-chromen-4-one
CAS 307551-65-1C18H13NO3S
4H-Pyran-4-one, 5-hydroxy-2-phenothiazin-10-ylmethyl- chemical structure, C18H13NO3S, CAS 101605-40-7
4H-Pyran-4-one, 5-hydroxy-2-phenothiazin-10-ylmethyl-
CAS 101605-40-7C18H13NO3S
N-(3-Acetylphenyl)-1-oxo-1H-isothiochromene-3-carboxamide chemical structure, C18H13NO3S, CAS 950383-13-8
N-(3-Acetylphenyl)-1-oxo-1H-isothiochromene-3-carboxamide
CAS 950383-13-8C18H13NO3S
3-(2-Oxo-2-phenylethyl)-5-(phenylmethylene)-2,4-thiazolidinedione chemical structure, C18H13NO3S, CAS 131554-62-6
3-(2-Oxo-2-phenylethyl)-5-(phenylmethylene)-2,4-thiazolidinedione
CAS 131554-62-6C18H13NO3S
N-((5-(Thiophen-2-yl)furan-2-yl)methyl)benzofuran-2-carboxamide chemical structure, C18H13NO3S, CAS 2034247-61-3
N-((5-(Thiophen-2-yl)furan-2-yl)methyl)benzofuran-2-carboxamide
CAS 2034247-61-3C18H13NO3S
N-((5-(Thiophen-3-yl)furan-2-yl)methyl)benzofuran-2-carboxamide chemical structure, C18H13NO3S, CAS 2034564-23-1
N-((5-(Thiophen-3-yl)furan-2-yl)methyl)benzofuran-2-carboxamide
CAS 2034564-23-1C18H13NO3S
N-([2,2'-Bifuran]-5-ylmethyl)benzo[b]thiophene-2-carboxamide chemical structure, C18H13NO3S, CAS 2034490-65-6
N-([2,2'-Bifuran]-5-ylmethyl)benzo[b]thiophene-2-carboxamide
CAS 2034490-65-6C18H13NO3S
N-([2,3'-Bifuran]-5-ylmethyl)benzo[b]thiophene-2-carboxamide chemical structure, C18H13NO3S, CAS 2034566-55-5
N-([2,3'-Bifuran]-5-ylmethyl)benzo[b]thiophene-2-carboxamide
CAS 2034566-55-5C18H13NO3S
2-[(6-Methoxybenzo[b]thien-2-yl)methyl]-1H-isoindole-1,3(2H)-dione chemical structure, C18H13NO3S, CAS 912462-81-8
2-[(6-Methoxybenzo[b]thien-2-yl)methyl]-1H-isoindole-1,3(2H)-dione
CAS 912462-81-8C18H13NO3S
N-[[4-(Furan-3-yl)thiophen-2-yl]methyl]-1-benzofuran-2-carboxamide chemical structure, C18H13NO3S, CAS 2380057-65-6
N-[[4-(Furan-3-yl)thiophen-2-yl]methyl]-1-benzofuran-2-carboxamide
CAS 2380057-65-6C18H13NO3S
Benzo[d]thiazol-2-ylmethyl 2H-chromene-3-carboxylate chemical structure, C18H13NO3S, CAS 1090761-51-5
Benzo[d]thiazol-2-ylmethyl 2H-chromene-3-carboxylate
CAS 1090761-51-5C18H13NO3S
7-(Benzo[d]thiazol-2-ylmethoxy)-2H-chromene-3-carbaldehyde chemical structure, C18H13NO3S, CAS 1228582-88-4
7-(Benzo[d]thiazol-2-ylmethoxy)-2H-chromene-3-carbaldehyde
CAS 1228582-88-4C18H13NO3S

Frequently asked questions

What is the molar mass of C18H13NO3S?

The molar mass of C18H13NO3S is 323.37 g/mol, calculated from standard atomic weights for 18 carbon atoms, 13 hydrogen atoms, 1 nitrogen atom, 3 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 323.0616 Da.

How many compounds have the formula C18H13NO3S?

CompoundList lists 28 compounds with the molecular formula C18H13NO3S, including Dibenzofuran, 2-methoxy-3-(2-thiophenecarboxamido)-, 2-Benzamido-5-phenylthiophene-3-carboxylic acid, 2-(1-Benzofuran-2-yl)-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d][1,3]oxazin-4-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 C18H13NO3S?

C18H13NO3S has a degree of unsaturation of 13. 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.