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Molecular formula

C21H18N2O3S2

44 compounds have this formula on CompoundList.

Molar mass
410.51g/mol
Monoisotopic mass
410.0759Da
Atoms
46
Elements
5
Rings plus double bonds
14

The formula C21H18N2O3S2 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms, 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 × 2161.44%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 184.42%
    1.008 × 18 = 18.144 g/mol
  • N Nitrogen × 26.82%
    14.007 × 2 = 28.014 g/mol
  • O Oxygen × 311.69%
    15.999 × 3 = 47.997 g/mol
  • S Sulfur × 215.62%
    32.06 × 2 = 64.120 g/mol
Look up another formula

Compounds with the formula C21H18N2O3S2

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

Showing 1 to 44 of 44 compounds

(3-Amino-6-methyl-4-thiophen-2-ylthieno[2,3-b]pyridin-2-yl)-(3,4-dimethoxyphenyl)methanone chemical structure, C21H18N2O3S2, CAS 327067-20-9
(3-Amino-6-methyl-4-thiophen-2-ylthieno[2,3-b]pyridin-2-yl)-(3,4-dimethoxyphenyl)methanone
CAS 327067-20-9C21H18N2O3S2
Compound 65 [PMID 24666157] chemical structure, C21H18N2O3S2, CAS 1596117-75-7
Compound 65 [PMID 24666157]
CAS 1596117-75-7C21H18N2O3S2
(3Z)-3-[3-(4-Ethoxyphenyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]-1-ethyl-1,3-dihydro-2H-indol-2-one chemical structure, C21H18N2O3S2, CAS 312935-58-3
(3Z)-3-[3-(4-Ethoxyphenyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]-1-ethyl-1,3-dihydro-2H-indol-2-one
CAS 312935-58-3C21H18N2O3S2
N-{[2-(4-Methoxyphenyl)-1,3-thiazol-4-yl]methyl}naphthalene-2-sulfonamide chemical structure, C21H18N2O3S2, CAS 863511-37-9
N-{[2-(4-Methoxyphenyl)-1,3-thiazol-4-yl]methyl}naphthalene-2-sulfonamide
CAS 863511-37-9C21H18N2O3S2
3-Benzyl-5-(3,4-dimethoxyphenyl)-2-thioxo-2,3-dihydrothieno[2,3-d]pyrimidin-4(1H)-one chemical structure, C21H18N2O3S2, CAS 379238-58-1
3-Benzyl-5-(3,4-dimethoxyphenyl)-2-thioxo-2,3-dihydrothieno[2,3-d]pyrimidin-4(1H)-one
CAS 379238-58-1C21H18N2O3S2
2-(3-(Phenylsulfonyl)-1H-indol-1-yl)-N-(thiophen-2-ylmethyl)acetamide chemical structure, C21H18N2O3S2, CAS 941878-82-6
2-(3-(Phenylsulfonyl)-1H-indol-1-yl)-N-(thiophen-2-ylmethyl)acetamide
CAS 941878-82-6C21H18N2O3S2
2-Methoxy-N-((E)-5-((E)-2-methyl-3-phenylallylidene)-4-oxo-2-thioxothiazolidin-3-yl)benzamide chemical structure, C21H18N2O3S2, CAS 638137-73-2
2-Methoxy-N-((E)-5-((E)-2-methyl-3-phenylallylidene)-4-oxo-2-thioxothiazolidin-3-yl)benzamide
CAS 638137-73-2C21H18N2O3S2
Ethyl 3-(3-benzoylthioureido)-5-phenylthiophene-2-carboxylate chemical structure, C21H18N2O3S2, CAS 476319-39-8
Ethyl 3-(3-benzoylthioureido)-5-phenylthiophene-2-carboxylate
CAS 476319-39-8C21H18N2O3S2
(E)-Ethyl 2-benzylidene-7-methyl-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate chemical structure, C21H18N2O3S2, CAS 324072-17-5
(E)-Ethyl 2-benzylidene-7-methyl-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate
CAS 324072-17-5C21H18N2O3S2
1-(4,5-Dimethylthiazol-2-yl)-3-hydroxy-4-(thiophene-2-carbonyl)-5-(p-tolyl)-1H-pyrrol-2(5H)-one chemical structure, C21H18N2O3S2, CAS 587005-77-4
1-(4,5-Dimethylthiazol-2-yl)-3-hydroxy-4-(thiophene-2-carbonyl)-5-(p-tolyl)-1H-pyrrol-2(5H)-one
CAS 587005-77-4C21H18N2O3S2
1-(4,5-Dimethylthiazol-2-yl)-3-hydroxy-4-(4-methylbenzoyl)-5-(thiophen-2-yl)-1H-pyrrol-2(5H)-one chemical structure, C21H18N2O3S2, CAS 578005-85-3
1-(4,5-Dimethylthiazol-2-yl)-3-hydroxy-4-(4-methylbenzoyl)-5-(thiophen-2-yl)-1H-pyrrol-2(5H)-one
CAS 578005-85-3C21H18N2O3S2
Benzyl 2-((4-oxo-3-phenyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetate chemical structure, C21H18N2O3S2, CAS 686771-03-9
Benzyl 2-((4-oxo-3-phenyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetate
CAS 686771-03-9C21H18N2O3S2
N-Benzyl-4-(4-methylphenyl)sulfonyl-2-thiophen-2-yl-1,3-oxazol-5-amine chemical structure, C21H18N2O3S2, CAS 627833-60-7
N-Benzyl-4-(4-methylphenyl)sulfonyl-2-thiophen-2-yl-1,3-oxazol-5-amine
CAS 627833-60-7C21H18N2O3S2
Methyl (2E)-7-methyl-2-(4-methylbenzylidene)-3-oxo-5-(2-thienyl)-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate chemical structure, C21H18N2O3S2, CAS 324071-48-9
Methyl (2E)-7-methyl-2-(4-methylbenzylidene)-3-oxo-5-(2-thienyl)-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate
CAS 324071-48-9C21H18N2O3S2
3-(2-Methoxyphenyl)-2-((2-oxo-2-phenylethyl)thio)-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one chemical structure, C21H18N2O3S2, CAS 850915-39-8
3-(2-Methoxyphenyl)-2-((2-oxo-2-phenylethyl)thio)-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one
CAS 850915-39-8C21H18N2O3S2
4-(Benzenesulfonyl)-N-[(4-methylphenyl)methyl]-2-thiophen-2-yl-1,3-oxazol-5-amine chemical structure, C21H18N2O3S2, CAS 627832-98-8
4-(Benzenesulfonyl)-N-[(4-methylphenyl)methyl]-2-thiophen-2-yl-1,3-oxazol-5-amine
CAS 627832-98-8C21H18N2O3S2
N-(2-Phenylethyl)-4-(phenylsulfonyl)-2-(thiophen-2-yl)-1,3-oxazol-5-amine chemical structure, C21H18N2O3S2, CAS 627833-06-1
N-(2-Phenylethyl)-4-(phenylsulfonyl)-2-(thiophen-2-yl)-1,3-oxazol-5-amine
CAS 627833-06-1C21H18N2O3S2
4-(Benzenesulfonyl)-N-benzyl-N-methyl-2-thiophen-2-yl-1,3-oxazol-5-amine chemical structure, C21H18N2O3S2, CAS 627833-10-7
4-(Benzenesulfonyl)-N-benzyl-N-methyl-2-thiophen-2-yl-1,3-oxazol-5-amine
CAS 627833-10-7C21H18N2O3S2
N-(Furan-2-ylmethyl)-N-(4-(methylthio)benzo[d]thiazol-2-yl)-2-phenoxyacetamide chemical structure, C21H18N2O3S2, CAS 923468-88-6
N-(Furan-2-ylmethyl)-N-(4-(methylthio)benzo[d]thiazol-2-yl)-2-phenoxyacetamide
CAS 923468-88-6C21H18N2O3S2
4-Benzyl-2-[3-(methylsulfanyl)phenyl]-3,4-dihydro-2H-1lambda6,2,4-benzothiadiazine-1,1,3-trione chemical structure, C21H18N2O3S2, CAS 946268-54-8
4-Benzyl-2-[3-(methylsulfanyl)phenyl]-3,4-dihydro-2H-1lambda6,2,4-benzothiadiazine-1,1,3-trione
CAS 946268-54-8C21H18N2O3S2
2-Oxo-2-((2-(phenylthio)phenyl)amino)ethyl 2-(methylthio)nicotinate chemical structure, C21H18N2O3S2, CAS 560124-09-6
2-Oxo-2-((2-(phenylthio)phenyl)amino)ethyl 2-(methylthio)nicotinate
CAS 560124-09-6C21H18N2O3S2
2-Methyl-N-{(5Z)-4-oxo-5-[4-(prop-2-en-1-yloxy)benzylidene]-2-thioxo-1,3-thiazolidin-3-yl}benzamide chemical structure, C21H18N2O3S2, CAS 861119-49-5
2-Methyl-N-{(5Z)-4-oxo-5-[4-(prop-2-en-1-yloxy)benzylidene]-2-thioxo-1,3-thiazolidin-3-yl}benzamide
CAS 861119-49-5C21H18N2O3S2
(5Z)-3-(3-Hydroxyphenyl)-5-[(5-methoxy-1,2-dimethyl-1H-indol-3-yl)methylidene]-2-thioxo-1,3-thiazolidin-4-one chemical structure, C21H18N2O3S2, CAS 929819-20-5
(5Z)-3-(3-Hydroxyphenyl)-5-[(5-methoxy-1,2-dimethyl-1H-indol-3-yl)methylidene]-2-thioxo-1,3-thiazolidin-4-one
CAS 929819-20-5C21H18N2O3S2
N-(Naphtho[2,1-d]thiazol-2-yl)-4-(phenylsulfonyl)butanamide chemical structure, C21H18N2O3S2, CAS 899961-09-2
N-(Naphtho[2,1-d]thiazol-2-yl)-4-(phenylsulfonyl)butanamide
CAS 899961-09-2C21H18N2O3S2

Frequently asked questions

What is the molar mass of C21H18N2O3S2?

The molar mass of C21H18N2O3S2 is 410.51 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms, 3 oxygen atoms and 2 sulfur atoms. The monoisotopic mass is 410.0759 Da.

How many compounds have the formula C21H18N2O3S2?

CompoundList lists 44 compounds with the molecular formula C21H18N2O3S2, including (3-Amino-6-methyl-4-thiophen-2-ylthieno[2,3-b]pyridin-2-yl)-(3,4-dimethoxyphenyl)methanone, Compound 65 [PMID 24666157], (3Z)-3-[3-(4-Ethoxyphenyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]-1-ethyl-1,3-dihydro-2H-indol-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 C21H18N2O3S2?

C21H18N2O3S2 has a degree of unsaturation of 14. 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.