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Molecular formula

C18H21NO3S2

39 compounds have this formula on CompoundList.

Molar mass
363.49g/mol
Monoisotopic mass
363.0963Da
Atoms
45
Elements
5
Rings plus double bonds
9

The formula C18H21NO3S2 describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom, 3 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 × 1859.48%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 215.82%
    1.008 × 21 = 21.168 g/mol
  • N Nitrogen × 13.85%
    14.007 × 1 = 14.007 g/mol
  • O Oxygen × 313.20%
    15.999 × 3 = 47.997 g/mol
  • S Sulfur × 217.64%
    32.06 × 2 = 64.120 g/mol
Look up another formula

Compounds with the formula C18H21NO3S2

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

Showing 1 to 39 of 39 compounds

N-(1,1-Dioxothiolan-3-yl)-4-methyl-N-[(3-methylthiophen-2-yl)methyl]benzamide chemical structure, C18H21NO3S2, CAS 847239-97-8
N-(1,1-Dioxothiolan-3-yl)-4-methyl-N-[(3-methylthiophen-2-yl)methyl]benzamide
CAS 847239-97-8C18H21NO3S2
4-[(Phenylsulfanyl)methyl]-1-(phenylsulfonyl)-4-piperidinol chemical structure, C18H21NO3S2, CAS 478041-55-3
4-[(Phenylsulfanyl)methyl]-1-(phenylsulfonyl)-4-piperidinol
CAS 478041-55-3C18H21NO3S2
5-[2-(1,3-Benzothiazol-2-ylsulfanyl)acetyl]-3-butyl-5-methyloxolan-2-one chemical structure, C18H21NO3S2, CAS 380593-00-0
5-[2-(1,3-Benzothiazol-2-ylsulfanyl)acetyl]-3-butyl-5-methyloxolan-2-one
CAS 380593-00-0C18H21NO3S2
N-(1,1-Dioxidotetrahydrothiophen-3-yl)-N-(4-ethylbenzyl)thiophene-2-carboxamide chemical structure, C18H21NO3S2, CAS 620563-12-4
N-(1,1-Dioxidotetrahydrothiophen-3-yl)-N-(4-ethylbenzyl)thiophene-2-carboxamide
CAS 620563-12-4C18H21NO3S2
5-(4-Propoxybenzylidene)-3-(tetrahydro-2-furanylmethyl)-2-thioxo-1,3-thiazolidin-4-one chemical structure, C18H21NO3S2, CAS 1164475-01-7
5-(4-Propoxybenzylidene)-3-(tetrahydro-2-furanylmethyl)-2-thioxo-1,3-thiazolidin-4-one
CAS 1164475-01-7C18H21NO3S2
3-(2,4-Dimethyl-benzenesulfonyl)-2-(2-methoxy-phenyl)-thiazolidine chemical structure, C18H21NO3S2, CAS 402947-32-4
3-(2,4-Dimethyl-benzenesulfonyl)-2-(2-methoxy-phenyl)-thiazolidine
CAS 402947-32-4C18H21NO3S2
N-(1,1-Dioxidotetrahydrothiophen-3-yl)-2-methyl-N-[(3-methylthiophen-2-yl)methyl]benzamide chemical structure, C18H21NO3S2, CAS 881444-49-1
N-(1,1-Dioxidotetrahydrothiophen-3-yl)-2-methyl-N-[(3-methylthiophen-2-yl)methyl]benzamide
CAS 881444-49-1C18H21NO3S2
4-(Benzylsulfonyl)-N-(2-(methylthio)phenyl)butanamide chemical structure, C18H21NO3S2, CAS 923500-21-4
4-(Benzylsulfonyl)-N-(2-(methylthio)phenyl)butanamide
CAS 923500-21-4C18H21NO3S2
(Z)-Butyl 4-(5-benzylidene-4-oxo-2-thioxothiazolidin-3-yl)butanoate chemical structure, C18H21NO3S2, CAS 265098-90-6
(Z)-Butyl 4-(5-benzylidene-4-oxo-2-thioxothiazolidin-3-yl)butanoate
CAS 265098-90-6C18H21NO3S2
(Z)-Pentyl 3-(5-benzylidene-4-oxo-2-thioxothiazolidin-3-yl)propanoate chemical structure, C18H21NO3S2, CAS 265098-80-4
(Z)-Pentyl 3-(5-benzylidene-4-oxo-2-thioxothiazolidin-3-yl)propanoate
CAS 265098-80-4C18H21NO3S2
(Z)-Isopentyl 3-(5-benzylidene-4-oxo-2-thioxothiazolidin-3-yl)propanoate chemical structure, C18H21NO3S2, CAS 19375-26-9
(Z)-Isopentyl 3-(5-benzylidene-4-oxo-2-thioxothiazolidin-3-yl)propanoate
CAS 19375-26-9C18H21NO3S2
Ethyl 4,5-dimethyl-2-(4,5,6,7-tetrahydro-1-benzothiophene-3-carbonylamino)thiophene-3-carboxylate chemical structure, C18H21NO3S2, CAS 314251-01-9
Ethyl 4,5-dimethyl-2-(4,5,6,7-tetrahydro-1-benzothiophene-3-carbonylamino)thiophene-3-carboxylate
CAS 314251-01-9C18H21NO3S2
Methyl 4,5-dimethyl-2-(6-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamido)thiophene-3-carboxylate chemical structure, C18H21NO3S2, CAS 868153-84-8
Methyl 4,5-dimethyl-2-(6-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamido)thiophene-3-carboxylate
CAS 868153-84-8C18H21NO3S2
3-Cyclohexyl-5-(3-ethoxy-4-hydroxybenzylidene)-2-thioxo-1,3-thiazolidin-4-one chemical structure, C18H21NO3S2, CAS 178735-17-6
3-Cyclohexyl-5-(3-ethoxy-4-hydroxybenzylidene)-2-thioxo-1,3-thiazolidin-4-one
CAS 178735-17-6C18H21NO3S2
3-((3,4-Dimethylphenyl)sulfonyl)-2-(4-methoxyphenyl)thiazolidine chemical structure, C18H21NO3S2, CAS 667910-35-2
3-((3,4-Dimethylphenyl)sulfonyl)-2-(4-methoxyphenyl)thiazolidine
CAS 667910-35-2C18H21NO3S2
Benzothiazolium, 3-ethyl-2,5-dimethyl-, 4-methylbenzenesulfonate (1:1) chemical structure, C18H21NO3S2, CAS 42379-67-9
Benzothiazolium, 3-ethyl-2,5-dimethyl-, 4-methylbenzenesulfonate (1:1)
CAS 42379-67-9C18H21NO3S2
6-[(5Z)-5-[(4-Ethylphenyl)methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]hexanoic acid chemical structure, C18H21NO3S2, CAS 307538-96-1
6-[(5Z)-5-[(4-Ethylphenyl)methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]hexanoic acid
CAS 307538-96-1C18H21NO3S2
(5Z)-3-Cyclopentyl-5-(4-ethoxy-3-methoxybenzylidene)-2-thioxo-1,3-thiazolidin-4-one chemical structure, C18H21NO3S2, CAS 848922-63-4
(5Z)-3-Cyclopentyl-5-(4-ethoxy-3-methoxybenzylidene)-2-thioxo-1,3-thiazolidin-4-one
CAS 848922-63-4C18H21NO3S2
Propyl 2-(thiophene-2-carbonylamino)-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate chemical structure, C18H21NO3S2, CAS 352706-15-1
Propyl 2-(thiophene-2-carbonylamino)-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate
CAS 352706-15-1C18H21NO3S2
(Z)-Ethyl 6-(5-benzylidene-4-oxo-2-thioxothiazolidin-3-yl)hexanoate chemical structure, C18H21NO3S2, CAS 15788-39-3
(Z)-Ethyl 6-(5-benzylidene-4-oxo-2-thioxothiazolidin-3-yl)hexanoate
CAS 15788-39-3C18H21NO3S2
(E)-5-(4-(Allyloxy)-3-methoxybenzylidene)-3-(sec-butyl)-2-thioxothiazolidin-4-one chemical structure, C18H21NO3S2, CAS 608490-87-5
(E)-5-(4-(Allyloxy)-3-methoxybenzylidene)-3-(sec-butyl)-2-thioxothiazolidin-4-one
CAS 608490-87-5C18H21NO3S2
Ethyl 2-(thiophene-2-carbonylamino)-4,5,6,7,8,9-hexahydrocycloocta[b]thiophene-3-carboxylate chemical structure, C18H21NO3S2, CAS 354997-11-8
Ethyl 2-(thiophene-2-carbonylamino)-4,5,6,7,8,9-hexahydrocycloocta[b]thiophene-3-carboxylate
CAS 354997-11-8C18H21NO3S2
3-(Phenylsulfonyl)-1-(4-(thiophen-2-yl)piperidin-1-yl)propan-1-one chemical structure, C18H21NO3S2, CAS 1396749-46-4
3-(Phenylsulfonyl)-1-(4-(thiophen-2-yl)piperidin-1-yl)propan-1-one
CAS 1396749-46-4C18H21NO3S2
(3-(Isobutylsulfonyl)azetidin-1-yl)(4-(thiophen-3-yl)phenyl)methanone chemical structure, C18H21NO3S2, CAS 1797276-71-1
(3-(Isobutylsulfonyl)azetidin-1-yl)(4-(thiophen-3-yl)phenyl)methanone
CAS 1797276-71-1C18H21NO3S2

Frequently asked questions

What is the molar mass of C18H21NO3S2?

The molar mass of C18H21NO3S2 is 363.49 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom, 3 oxygen atoms and 2 sulfur atoms. The monoisotopic mass is 363.0963 Da.

How many compounds have the formula C18H21NO3S2?

CompoundList lists 39 compounds with the molecular formula C18H21NO3S2, including N-(1,1-Dioxothiolan-3-yl)-4-methyl-N-[(3-methylthiophen-2-yl)methyl]benzamide, 4-[(Phenylsulfanyl)methyl]-1-(phenylsulfonyl)-4-piperidinol, 5-[2-(1,3-Benzothiazol-2-ylsulfanyl)acetyl]-3-butyl-5-methyloxolan-2-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 C18H21NO3S2?

C18H21NO3S2 has a degree of unsaturation of 9. 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.