Molecular formula
C18H18N2O3S
368 compounds have this formula on CompoundList.
- Molar mass
- 342.41g/mol
- Monoisotopic mass
- 342.1038Da
- Atoms
- 42
- Elements
- 5
- Rings plus double bonds
- 11
The formula C18H18N2O3S describes a molecule made of 18 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms, 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 × 1863.14%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 185.30%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 28.18%14.007 × 2 = 28.014 g/mol
- O Oxygen × 314.02%15.999 × 3 = 47.997 g/mol
- S Sulfur × 19.36%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C18H18N2O3S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 200 of 368 compounds
N-(3,6-Dimethyl-1,3-benzothiazol-2-ylidene)-2,4-dimethoxybenzamide
CAS 313404-81-8C18H18N2O3S
![Ethyl 5-methyl-4-oxo-3-phenethyl-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate chemical structure, C18H18N2O3S, CAS 433955-89-6](/s/OZOOZMQLHVHJRH-UHFFFAOYSA-N.svg)
Ethyl 5-methyl-4-oxo-3-phenethyl-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate
CAS 433955-89-6C18H18N2O3S
![Ethyl 4-({[(2-methylbenzoyl)amino]carbothioyl}amino)benzoate chemical structure, C18H18N2O3S, CAS 333741-12-1](/s/CADXZNMXSZFHTM-UHFFFAOYSA-N.svg)
Ethyl 4-({[(2-methylbenzoyl)amino]carbothioyl}amino)benzoate
CAS 333741-12-1C18H18N2O3S
![Methyl 4-({[(3,4-dimethylphenyl)carbonyl]carbamothioyl}amino)benzoate chemical structure, C18H18N2O3S, CAS 335213-46-2](/s/NLFFHPSWNOWJDF-UHFFFAOYSA-N.svg)
Methyl 4-({[(3,4-dimethylphenyl)carbonyl]carbamothioyl}amino)benzoate
CAS 335213-46-2C18H18N2O3S
![N-(3-Cyano-5,5-dimethyl-4,7-dihydrothieno[2,3-c]pyran-2-yl)-3-methoxybenzamide chemical structure, C18H18N2O3S, CAS 371199-34-7](/s/IJUWSNJYSCAOMA-UHFFFAOYSA-N.svg)
N-(3-Cyano-5,5-dimethyl-4,7-dihydrothieno[2,3-c]pyran-2-yl)-3-methoxybenzamide
CAS 371199-34-7C18H18N2O3S
N-(3-Cyano-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)-3,5-dimethoxybenzamide
CAS 313404-43-2C18H18N2O3S
3-(2,3-Dimethylphenyl)-6,7-dimethoxy-2-sulfanylquinazolin-4(3H)-one
CAS 525581-53-7C18H18N2O3S
N-(6-Ethoxy-1,3-benzothiazol-2-yl)-2-(3-methylphenoxy)acetamide
CAS 566889-46-1C18H18N2O3S
![5-[(4-Ethoxyphenyl)amino]-3-(3-methylphenyl)-1,3-thiazolidine-2,4-dione chemical structure, C18H18N2O3S, CAS 354124-78-0](/s/DPWPLOZELCBIPD-UHFFFAOYSA-N.svg)
5-[(4-Ethoxyphenyl)amino]-3-(3-methylphenyl)-1,3-thiazolidine-2,4-dione
CAS 354124-78-0C18H18N2O3S
![Methyl 2-({[(3,4-dimethylphenyl)carbonyl]carbamothioyl}amino)benzoate chemical structure, C18H18N2O3S, CAS 335213-09-7](/s/YMFMTIXKVNZCPV-UHFFFAOYSA-N.svg)
Methyl 2-({[(3,4-dimethylphenyl)carbonyl]carbamothioyl}amino)benzoate
CAS 335213-09-7C18H18N2O3S
![6-[[4-(2-Methyl-1,3-thiazol-4-yl)phenyl]carbamoyl]cyclohex-3-ene-1-carboxylic acid chemical structure, C18H18N2O3S, CAS 893781-09-4](/s/PYYXNAANQQHGKL-UHFFFAOYSA-N.svg)
6-[[4-(2-Methyl-1,3-thiazol-4-yl)phenyl]carbamoyl]cyclohex-3-ene-1-carboxylic acid
CAS 893781-09-4C18H18N2O3S
![3-[(4-Propan-2-ylbenzoyl)carbamothioylamino]benzoic acid chemical structure, C18H18N2O3S, CAS 433952-68-2](/s/LUDZMGOHPHOLTG-UHFFFAOYSA-N.svg)
3-[(4-Propan-2-ylbenzoyl)carbamothioylamino]benzoic acid
CAS 433952-68-2C18H18N2O3S
![2-[1-[2-(4-Methylphenoxy)ethyl]benzimidazol-2-yl]sulfanylacetic acid chemical structure, C18H18N2O3S, CAS 312616-17-4](/s/VEQKRKNBWXIGHQ-UHFFFAOYSA-N.svg)
2-[1-[2-(4-Methylphenoxy)ethyl]benzimidazol-2-yl]sulfanylacetic acid
CAS 312616-17-4C18H18N2O3S
![Ethyl 4-{[(phenylacetyl)carbamothioyl]amino}benzoate chemical structure, C18H18N2O3S, CAS 87998-88-7](/s/XYPDQBXHUGDXEJ-UHFFFAOYSA-N.svg)
Ethyl 4-{[(phenylacetyl)carbamothioyl]amino}benzoate
CAS 87998-88-7C18H18N2O3S
![2-[2-(4-Acetylanilino)-2-oxoethyl]sulfanyl-N-phenylacetamide chemical structure, C18H18N2O3S, CAS 327992-30-3](/s/OHGPAZQMTLRJNU-UHFFFAOYSA-N.svg)
2-[2-(4-Acetylanilino)-2-oxoethyl]sulfanyl-N-phenylacetamide
CAS 327992-30-3C18H18N2O3S
4-(Benzenesulfonyl)-N,N-dimethyl-2-(4-methylphenyl)-1,3-oxazol-5-amine
CAS 314748-18-0C18H18N2O3S
4-Propoxy-N-pyridin-3-ylnaphthalene-1-sulfonamide
CAS 898654-34-7C18H18N2O3S
N'-(1,3-Benzodioxol-5-ylmethylene)-6-methyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carbohydrazide
CAS 522618-48-0C18H18N2O3S
![3-[(4-Aminophenyl)thio]-1-(4-ethoxyphenyl)pyrrolidine-2,5-dione chemical structure, C18H18N2O3S, CAS 913243-76-2](/s/XQUULSWBQXFZOF-UHFFFAOYSA-N.svg)
3-[(4-Aminophenyl)thio]-1-(4-ethoxyphenyl)pyrrolidine-2,5-dione
CAS 913243-76-2C18H18N2O3S
![Ethyl 5-methyl-3-(3-methylbenzyl)-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate chemical structure, C18H18N2O3S, CAS 459418-46-3](/s/AELIJDMPXNDZKA-UHFFFAOYSA-N.svg)
Ethyl 5-methyl-3-(3-methylbenzyl)-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate
CAS 459418-46-3C18H18N2O3S
N-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-2,4-dimethoxybenzamide
CAS 307510-45-8C18H18N2O3S
N-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-3,4-dimethoxybenzamide
CAS 325978-59-4C18H18N2O3S
N-(Furan-2-ylmethyl)-4-methyl-N-(pyridin-2-ylmethyl)benzenesulfonamide
CAS 351336-19-1C18H18N2O3S
![2-[1-[2-(2-Methylphenoxy)ethyl]benzimidazol-2-yl]sulfanylacetic acid chemical structure, C18H18N2O3S, CAS 331963-98-5](/s/WVQOZCSNHXAYHV-UHFFFAOYSA-N.svg)
2-[1-[2-(2-Methylphenoxy)ethyl]benzimidazol-2-yl]sulfanylacetic acid
CAS 331963-98-5C18H18N2O3S
- Methyl 3-amino-4-(5-methyl-2-furyl)-5,6,7,8-tetrahydrothieno[2,3-b]quinoline-2-carboxylate361155-63-7C18H18N2O3S
- N-[(3-Acetylphenyl)carbamothioyl]-4-ethoxybenzamide429621-20-5C18H18N2O3S
- N-(6-Methoxy-1,3-benzothiazol-2-yl)-3-(4-methoxyphenyl)propanamide445017-67-4C18H18N2O3S
- Benzyl 6-methyl-4-(3-methylthiophen-2-yl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate435289-01-3C18H18N2O3S
- N-(2-Methoxyethyl)-N-[(2-oxo-1H-quinolin-3-yl)methyl]thiophene-2-carboxamide838896-69-8C18H18N2O3S
- N-(4-Benzylphenyl)-3,5-dimethylisoxazole-4-sulfonamide1022417-69-1C18H18N2O3S
- (Z)-2-Methoxy-N-(3-(2-methoxyethyl)benzo[d]thiazol-2(3H)-ylidene)benzamide864975-65-5C18H18N2O3S
- 3-(3,4-Dimethylphenyl)-5-((2-methoxyphenyl)amino)thiazolidine-2,4-dione1008962-92-2C18H18N2O3S
- N-(2-(7-Methoxy-2-oxo-1,2-dihydroquinolin-3-yl)ethyl)-2-(thiophen-2-yl)acetamide851405-57-7C18H18N2O3S
- 4-Methoxy-N-[3-(2-methoxyethyl)-1,3-benzothiazol-2-ylidene]benzamide864975-52-0C18H18N2O3S
- 2-(2-Methylindolin-1-yl)-2-oxoethyl 2-(methylthio)nicotinate475055-29-9C18H18N2O3S
- Methyl 4-[(E)-(4,5,6,7-tetrahydro-1-benzothiophene-3-carbonylhydrazinylidene)methyl]benzoate514843-35-7C18H18N2O3S
- N-(9H-Fluoren-2-yl)-1-(methylsulfonyl)azetidine-3-carboxamide1448133-93-4C18H18N2O3S
- 3-(2-Oxo-2-(4-(thiophen-2-yl)piperidin-1-yl)ethyl)benzo[d]oxazol-2(3H)-one1396716-08-7C18H18N2O3S
- 5-Cyclopropyl-N-(furan-2-ylmethyl)-N-(2-(thiophen-2-yl)ethyl)isoxazole-3-carboxamide1396634-98-2C18H18N2O3S
- N-Benzyl-2-[2,6-dioxo-4-(thiophen-2-yl)piperidin-1-yl]acetamide1396768-54-9C18H18N2O3S
- 3-({[(3,4-Dimethylphenyl)carbonyl]carbamothioyl}amino)-4-methylbenzoic acid433965-38-9C18H18N2O3S
- 5-Methyl-1-(4-methylphenyl)-4-[(phenylsulfonyl)methyl]-1,3-dihydro-2H-imidazol-2-one477848-64-9C18H18N2O3S
- (Z)-N-(4,7-Dimethoxy-3-methylbenzo[d]thiazol-2(3H)-ylidene)-2-phenylacetamide868370-88-1C18H18N2O3S
- Benzyl 2-(5,6-dimethyl-4-oxothieno[2,3-d]pyrimidin-3(4H)-yl)propanoate450393-33-6C18H18N2O3S
- Methyl 4-(4-methoxy-1-naphthyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydro-5-pyrimidinecarboxylate354775-84-1C18H18N2O3S
- N-(6-Methoxy-1,3-benzothiazol-2-yl)-2-phenoxybutanamide600158-77-8C18H18N2O3S
- 2-(3-Oxothiomorpholin-2-yl)-N-(4-phenoxyphenyl)acetamide727407-77-4C18H18N2O3S
- 1,5-Dimethyl-2-phenyl-4-[(phenylsulfonyl)methyl]-1,2-dihydro-3H-pyrazol-3-one853-49-6C18H18N2O3S
- 3-(3,4-Dimethoxyphenyl)-5-[(4-methylphenyl)sulfanylmethyl]-1,2,4-oxadiazole838881-01-9C18H18N2O3S
- 2-(2,6-Dimethyl-3,5-dioxothiomorpholin-4-yl)-N-naphthalen-1-ylacetamide868215-50-3C18H18N2O3S
- N-(3-Cyano-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)-2,3-dimethoxybenzamide627060-46-2C18H18N2O3S
- N-(5,6-Dimethoxy-1,3-benzothiazol-2-yl)-3,4-dimethylbenzamide895438-32-1C18H18N2O3S
- N-(5,6-Dimethoxy-1,3-benzothiazol-2-yl)-2,4-dimethylbenzamide895443-67-1C18H18N2O3S
- [(1-Cyanocyclohexyl)carbamoyl]methyl 1-benzothiophene-2-carboxylate871547-04-5C18H18N2O3S
- N-Cyclopropyl-2-[[(E)-2-phenylethenyl]sulfonylamino]benzamide1090342-29-2C18H18N2O3S
- 4-Ethoxy-N-(6-methyl-2-pyridinyl)-1-naphthalenesulfonamide915900-61-7C18H18N2O3S
- 6-Ethoxy-N-(2-pyridinylmethyl)-2-naphthalenesulfonamide902248-99-1C18H18N2O3S
- [(6-Propoxy(2-naphthyl))sulfonyl]-3-pyridylamine950238-79-6C18H18N2O3S
- [(6-Propoxy(2-naphthyl))sulfonyl]-2-pyridylamine950248-28-9C18H18N2O3S
- N-{2-Oxo-1-azatricyclo[6.3.1.0^{4,12}]dodeca-4(12),5,7-trien-6-yl}-1-phenylmethanesulfonamide1211744-02-3C18H18N2O3S
- (E)-N-(1-Ethyl-2-oxoindolin-5-yl)-2-phenylethenesulfonamide1251711-14-4C18H18N2O3S
- N-[(4-Cyanophenyl)methanesulfonyl]-2-methyl-2-phenylpropanamide1252490-44-0C18H18N2O3S
- 2-Cyano-4-[4-(piperidin-1-ylsulfonyl)phenyl]phenol1261953-37-0C18H18N2O3S
- 2-Cyano-5-[4-(piperidin-1-ylsulfonyl)phenyl]phenol1261984-83-1C18H18N2O3S
- 3-Cyano-5-[4-(piperidin-1-ylsulfonyl)phenyl]phenol1261994-12-0C18H18N2O3S
- 1-(Furan-3-ylmethyl)-3-(2-methoxyphenyl)-1-(thiophen-2-ylmethyl)urea1421527-92-5C18H18N2O3S
- 1'-(2,4-Dimethylthiazole-5-carbonyl)-3H-spiro[isobenzofuran-1,4'-piperidin]-3-one1797140-09-0C18H18N2O3S
- 3-Oxo-N-[(thiophen-2-yl)methyl]-3H-spiro[2-benzofuran-1,4'-piperidine]-1'-carboxamide1797341-17-3C18H18N2O3S
- 3-(((6-Methyl-3,4-dihydroquinolin-1(2H)-yl)sulfonyl)methyl)benzo[d]isoxazole1797092-80-8C18H18N2O3S
- N-(Furan-3-ylmethyl)-N-(2-methoxyethyl)-2-phenylthiazole-4-carboxamide1797649-41-2C18H18N2O3S
- 4-Methoxy-2,5-dimethyl-N-(quinolin-8-yl)benzene-1-sulfonamide2094256-68-3C18H18N2O3S
- N-(2-(Benzo[b]thiophen-2-yl)-2-hydroxypropyl)-1-methyl-2-oxo-1,2-dihydropyridine-3-carboxamide2034263-02-8C18H18N2O3S
- N-[5-(1,2-Dihydro-2-methyl-1-oxo-4-isoquinolinyl)-2-methylphenyl]methanesulfonamide1706737-25-8C18H18N2O3S
- N-((1,4-Dimethyl-2-oxo-1,2-dihydroquinolin-6-yl)methyl)benzenesulfonamide2924084-57-9C18H18N2O3S
- N-[(3-Acetylphenyl)carbamothioyl]-2-(4-methylphenoxy)acetamide380595-89-1C18H18N2O3S
- N-(6-Methoxy-1,3-benzothiazol-2-yl)-4-propan-2-yloxybenzamide95021-33-3C18H18N2O3S
- 3-(4-Methylphenyl)-5-(4-toluidinomethylene)-1lambda~6~,3-thiazolane-1,1,4-trione338753-42-7C18H18N2O3S
- Ethyl 4-cyano-3-methyl-5-(3-phenylpropanamido)thiophene-2-carboxylate449177-13-3C18H18N2O3S
- (E)-N-(2-Benzylsulfanylethyl)-3-(4-nitrophenyl)prop-2-enamide369619-79-4C18H18N2O3S
- 2-(3,4-Dihydroisoquinolin-2(1H)-yl)-2-oxoethyl 2-(methylthio)nicotinate475055-40-4C18H18N2O3S
- 1-[(4-Ethoxyphenyl)sulfonyl]-4-methyl-2-phenylimidazole835887-44-0C18H18N2O3S
- N-(4,7-Dimethyl-1,3-benzothiazol-2-yl)-3,4-dimethoxybenzamide839691-53-1C18H18N2O3S
- 1,3,4-Oxadiazole-2-thiol, 5-(p-methoxy-alpha-(p-methoxyphenyl)phenethyl)-78626-30-9C18H18N2O3S
- N-(3,6-Dimethyl-1,3-benzothiazol-2-ylidene)-3,4-dimethoxybenzamide325980-02-7C18H18N2O3S
- 6-(Dimethoxymethyl)-5-[(naphthalen-1-yl)methyl]-2-sulfanylidene-2,3-dihydropyrimidin-4(1H)-one21326-12-5C18H18N2O3S
- N-(4,5-Dimethyl-1,3-benzothiazol-2-yl)-3,4-dimethoxybenzamide888409-62-9C18H18N2O3S
- N-(4-Ethyl-1,3-benzothiazol-2-yl)-2,4-dimethoxybenzamide868677-81-0C18H18N2O3S
- N-(4,7-Dimethyl-1,3-benzothiazol-2-yl)-3,5-dimethoxybenzamide900867-02-9C18H18N2O3S
- N-(4,7-Dimethoxy-1,3-benzothiazol-2-yl)-3-phenylpropanamide906784-09-6C18H18N2O3S
- N-(4-Ethyl-1,3-benzothiazol-2-yl)-2,3-dimethoxybenzamide895444-94-7C18H18N2O3S
- N-(5,6-Dimethoxy-1,3-benzothiazol-2-yl)-3-phenylpropanamide895441-98-2C18H18N2O3S
- 2-[(4-Acetylbenzoyl)amino]-N-methyl-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxamide893094-61-6C18H18N2O3S
- 4-Oxo-N-(o-tolyl)-2,4,5,6-tetrahydro-1H-pyrrolo[3,2,1-ij]quinoline-8-sulfonamide898419-95-9C18H18N2O3S
- (4-Methylphenyl)carbamic acid 3-(3-oxo-1,2-benzisothiazol-2(3H)-yl)propyl ester199172-97-9C18H18N2O3S
- N-Ethyl-4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonamide473465-11-1C18H18N2O3S
- 2-[(4-Methoxyphenyl)sulfonyl]-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole927032-92-6C18H18N2O3S
- 4,8-Dimethyl-2-oxo-N-(m-tolyl)-1,2-dihydroquinoline-6-sulfonamide899998-73-3C18H18N2O3S
- N-(2-Methoxyphenethyl)-2-(5-(thiophen-2-yl)isoxazol-3-yl)acetamide946316-77-4C18H18N2O3S
- N-(4-Methoxyphenethyl)-2-(5-(thiophen-2-yl)isoxazol-3-yl)acetamide946227-87-8C18H18N2O3S
- N-(2-(Dimethylamino)-2-(thiophen-3-yl)ethyl)-2-oxo-2H-chromene-3-carboxamide946271-26-7C18H18N2O3S
Frequently asked questions
What is the molar mass of C18H18N2O3S?
The molar mass of C18H18N2O3S is 342.41 g/mol, calculated from standard atomic weights for 18 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms, 3 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 342.1038 Da.
How many compounds have the formula C18H18N2O3S?
CompoundList lists 368 compounds with the molecular formula C18H18N2O3S, including N-(3,6-Dimethyl-1,3-benzothiazol-2-ylidene)-2,4-dimethoxybenzamide, Ethyl 5-methyl-4-oxo-3-phenethyl-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate, Ethyl 4-({[(2-methylbenzoyl)amino]carbothioyl}amino)benzoate. 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 C18H18N2O3S?
C18H18N2O3S has a degree of unsaturation of 11. 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.