Molecular formula
C18H20N2O3S
453 compounds have this formula on CompoundList.
- Molar mass
- 344.43g/mol
- Monoisotopic mass
- 344.1195Da
- Atoms
- 44
- Elements
- 5
- Rings plus double bonds
- 10
The formula C18H20N2O3S describes a molecule made of 18 carbon atoms, 20 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 × 1862.77%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 205.85%1.008 × 20 = 20.160 g/mol
- N Nitrogen × 28.13%14.007 × 2 = 28.014 g/mol
- O Oxygen × 313.94%15.999 × 3 = 47.997 g/mol
- S Sulfur × 19.31%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C18H20N2O3S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 200 of 453 compounds
Ethyl 6-methyl-2-(pyridine-3-carbonylamino)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate
CAS 302573-84-8C18H20N2O3S
![Ethyl 6-methyl-2-[(pyridin-4-ylcarbonyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate chemical structure, C18H20N2O3S, CAS 6115-54-4](/s/ROCOEPFAXYRZBY-UHFFFAOYSA-N.svg)
Ethyl 6-methyl-2-[(pyridin-4-ylcarbonyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate
CAS 6115-54-4C18H20N2O3S
![Isopropyl 8-methyl-4-oxo-6-phenyl-3,4-dihydro-2H,6H-pyrimido[2,1-B][1,3]thiazine-7-carboxylate chemical structure, C18H20N2O3S, CAS 374092-52-1](/s/RCMLYOQXPDBHSY-UHFFFAOYSA-N.svg)
Isopropyl 8-methyl-4-oxo-6-phenyl-3,4-dihydro-2H,6H-pyrimido[2,1-B][1,3]thiazine-7-carboxylate
CAS 374092-52-1C18H20N2O3S
1-((4-Ethoxynaphthalen-1-yl)sulfonyl)-2-isopropyl-1H-imidazole
CAS 423151-71-7C18H20N2O3S
Deacetyl-N,O-didemethyldiltiazem
CAS 86408-42-6C18H20N2O3S
1-Benzyl-3-methyl-1H-imidazol-3-ium 4-methylbenzenesulfonate
CAS 52461-83-3C18H20N2O3S
1-(Phenylacetyl)-4-(phenylsulfonyl)piperazine
CAS 522650-58-4C18H20N2O3S
![2-[(3-Methoxybenzoyl)amino]-6-methyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide chemical structure, C18H20N2O3S, CAS 329222-13-1](/s/GSDORWNPUILGKT-UHFFFAOYSA-N.svg)
2-[(3-Methoxybenzoyl)amino]-6-methyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide
CAS 329222-13-1C18H20N2O3S
Butyl 2-((3-cyano-6-oxo-4-phenyl-1,4,5,6-tetrahydropyridin-2-yl)thio)acetate
CAS 332051-22-6C18H20N2O3S
![Ethyl 2-[(pyridin-3-ylcarbonyl)amino]-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate chemical structure, C18H20N2O3S, CAS 309945-57-1](/s/WLJCDMBBFRRGAH-UHFFFAOYSA-N.svg)
Ethyl 2-[(pyridin-3-ylcarbonyl)amino]-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate
CAS 309945-57-1C18H20N2O3S
![2-{[(3-Methylphenoxy)acetyl]amino}-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide chemical structure, C18H20N2O3S, CAS 315675-80-0](/s/KXPFOFQSHZMWCO-UHFFFAOYSA-N.svg)
2-{[(3-Methylphenoxy)acetyl]amino}-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide
CAS 315675-80-0C18H20N2O3S
![2-[(2-Methoxybenzoyl)amino]-6-methyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide chemical structure, C18H20N2O3S, CAS 328280-47-3](/s/LSESBKISVVVIDN-UHFFFAOYSA-N.svg)
2-[(2-Methoxybenzoyl)amino]-6-methyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide
CAS 328280-47-3C18H20N2O3S
4-(5-Oxopyrrolidin-3-yl)-N-(2-phenylethyl)benzenesulfonamide
CAS 633287-82-8C18H20N2O3S
5-(2-Methoxyphenyl)-1-(methylsulfonyl)-3-(p-tolyl)-4,5-dihydro-1H-pyrazole
CAS 497247-77-5C18H20N2O3S
![Ethyl 2-[(phenylcarbamoyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate chemical structure, C18H20N2O3S, CAS 27285-12-7](/s/SDMHYSNLXAEIDF-UHFFFAOYSA-N.svg)
Ethyl 2-[(phenylcarbamoyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate
CAS 27285-12-7C18H20N2O3S
![N-[4-(1-Piperidinylsulfonyl)phenyl]benzamide chemical structure, C18H20N2O3S, CAS 332039-81-3](/s/QMHUWVGKFAHFLU-UHFFFAOYSA-N.svg)
N-[4-(1-Piperidinylsulfonyl)phenyl]benzamide
CAS 332039-81-3C18H20N2O3S
![3-Methyl-N-[4-(pyrrolidin-1-ylsulfonyl)phenyl]benzamide chemical structure, C18H20N2O3S, CAS 327067-56-1](/s/QCZMYZHXRRBVLK-UHFFFAOYSA-N.svg)
3-Methyl-N-[4-(pyrrolidin-1-ylsulfonyl)phenyl]benzamide
CAS 327067-56-1C18H20N2O3S
![2-({[4-(1-Piperidinylsulfonyl)phenyl]imino}methyl)phenol chemical structure, C18H20N2O3S, CAS 71333-98-7](/s/LQQQAWAOPATSTM-UHFFFAOYSA-N.svg)
2-({[4-(1-Piperidinylsulfonyl)phenyl]imino}methyl)phenol
CAS 71333-98-7C18H20N2O3S
Butyl 4-(2-(2-pyridylthio)acetylamino)benzoate
CAS 309292-25-9C18H20N2O3S
![2-(2-Methoxybenzamido)-5-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamide chemical structure, C18H20N2O3S, CAS 392239-06-4](/s/VFJHMTFTNVMCFA-UHFFFAOYSA-N.svg)
2-(2-Methoxybenzamido)-5-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamide
CAS 392239-06-4C18H20N2O3S
![1-[(2-Ethoxy-4,5-dimethylphenyl)sulfonyl]-2-methyl-1H-benzimidazole chemical structure, C18H20N2O3S, CAS 898647-62-6](/s/XXWRFERQRUPSSZ-UHFFFAOYSA-N.svg)
1-[(2-Ethoxy-4,5-dimethylphenyl)sulfonyl]-2-methyl-1H-benzimidazole
CAS 898647-62-6C18H20N2O3S
![1-((4-Methoxy-2,3-dimethylphenyl)sulfonyl)-5,6-dimethyl-1H-benzo[d]imidazole chemical structure, C18H20N2O3S, CAS 873680-86-5](/s/PAVHDGPNOXXLSK-UHFFFAOYSA-N.svg)
1-((4-Methoxy-2,3-dimethylphenyl)sulfonyl)-5,6-dimethyl-1H-benzo[d]imidazole
CAS 873680-86-5C18H20N2O3S
4-(Pyrrolidin-1-ylsulfonyl)-N-(m-tolyl)benzamide
CAS 313254-16-9C18H20N2O3S
Ethyl 2-amino-5-(3,4-dihydroisoquinolin-2(1H)-ylcarbonyl)-4-methylthiophene-3-carboxylate
CAS 346714-19-0C18H20N2O3S
- N-(5,5-Dimethyl-7-oxo-4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)-3-phenoxypropanamide361168-07-2C18H20N2O3S
- Methyl 2-(pyridine-3-carbonylamino)-4,5,6,7,8,9-hexahydrocycloocta[b]thiophene-3-carboxylate353789-25-0C18H20N2O3S
- 6-Methyl-2-[[(E)-3-(5-methylfuran-2-yl)prop-2-enoyl]amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide550313-53-6C18H20N2O3S
- 6-Ethyl-2-[[(E)-3-(furan-2-yl)prop-2-enoyl]amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide544657-33-2C18H20N2O3S
- 2-[[(E)-3-(Furan-2-yl)prop-2-enoyl]amino]-4,5,6,7,8,9-hexahydrocycloocta[b]thiophene-3-carboxamide544453-11-4C18H20N2O3S
- 4-(3,4-Dihydro-1H-isoquinoline-2-carbonyl)-N,N-dimethylbenzenesulfonamide392290-00-5C18H20N2O3S
- Propyl 2-[(3-pyridinylcarbonyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate550305-42-5C18H20N2O3S
- N-(2,6-Dimethylphenyl)-4-(5-oxo-3-pyrrolidinyl)benzenesulfonamide695213-36-6C18H20N2O3S
- 6-[(3-Cyano-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophen-2-yl)carbamoyl]cyclohex-3-ene-1-carboxylic acid353775-32-3C18H20N2O3S
- Ethyl 2-ethyl-7-methyl-3-oxo-5-phenyl-2H,3H,5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate123044-05-3C18H20N2O3S
- 1-((5-Methoxy-2,4-dimethylphenyl)sulfonyl)-2-phenyl-4,5-dihydro-1H-imidazole902116-68-1C18H20N2O3S
- 1-((3-Ethyl-4-methoxyphenyl)sulfonyl)-2-phenyl-4,5-dihydro-1H-imidazole898641-93-5C18H20N2O3S
- 1-(5-(2-Hydroxy-3-methoxyphenyl)-3-(thiophen-2-yl)-4,5-dihydro-1H-pyrazol-1-yl)butan-1-one923221-34-5C18H20N2O3S
- 1-((5-Ethyl-2-methoxyphenyl)sulfonyl)-5,6-dimethyl-1H-benzo[d]imidazole873672-00-5C18H20N2O3S
- N-[4,5-Dimethyl-3-(morpholine-4-carbonyl)thiophen-2-yl]benzamide333774-35-9C18H20N2O3S
- 1-(4-Ethoxy-3-methylbenzenesulfonyl)-5,6-dimethyl-1H-1,3-benzodiazole714205-50-2C18H20N2O3S
- 1-(2-Ethoxy-5-methylphenyl)sulfonyl-5,6-dimethylbenzimidazole838252-37-2C18H20N2O3S
- Ethyl 8-methyl-6-(4-methylphenyl)-4-oxo-2H,3H,4H,6H-pyrimido[2,1-b][1,3]thiazine-7-carboxylate496011-47-3C18H20N2O3S
- 1-Benzyl-1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-phenylurea324780-48-5C18H20N2O3S
- 2-(3-Methoxybenzamido)-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxamide477494-03-4C18H20N2O3S
- Isopropyl 2,7-dimethyl-3-oxo-5-phenyl-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate620551-52-2C18H20N2O3S
- 2-(3-Methoxybenzamido)-5-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamide476280-25-8C18H20N2O3S
- 1-(4-Ethoxy-3-propan-2-ylphenyl)sulfonylbenzimidazole791843-64-6C18H20N2O3S
- 1-[4-Methoxy-2-methyl-5-(propan-2-yl)benzenesulfonyl]-1H-1,3-benzodiazole873680-33-2C18H20N2O3S
- N-(Oxolan-2-ylmethyl)-2-[(2-thiophen-2-ylacetyl)amino]benzamide879594-89-5C18H20N2O3S
- 1,7,7-Trimethyl-N-(4-methyl-1,3-benzothiazol-2-yl)-2-oxo-3-oxabicyclo[2.2.1]heptane-4-carboxamide889306-08-5C18H20N2O3S
- 2-(4-Methoxybenzamido)-N-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamide892977-32-1C18H20N2O3S
- 1-((2-Methoxy-4,5-dimethylphenyl)sulfonyl)-2-phenyl-4,5-dihydro-1H-imidazole902249-35-8C18H20N2O3S
- 1-[(4-Ethoxy-2,3-dimethylphenyl)sulfonyl]-2-methylbenzimidazole905778-82-7C18H20N2O3S
- N-{4-[2-(Morpholin-4-yl)-2-oxoethyl]phenyl}-2-(thiophen-2-yl)acetamide1070960-31-4C18H20N2O3S
- 4-Benzyl-5-oxo-N-(2-(thiophen-2-yl)ethyl)morpholine-3-carboxamide1351581-63-9C18H20N2O3S
- 2-[(2-Ethoxybenzoyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide329221-55-8C18H20N2O3S
- Morpholine, 4-[[[(4-methylphenyl)sulfonyl]imino]phenylmethyl]-17260-48-9C18H20N2O3S
- 2-[[(E)-3-(5-Methylfuran-2-yl)prop-2-enoyl]amino]-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxamide524731-76-8C18H20N2O3S
- Methyl 4-piperidyl-3-(2-thienylcarbonylamino)benzoate727674-68-2C18H20N2O3S
- Methyl 6-methyl-2-(phenylcarbamoylamino)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate540789-97-7C18H20N2O3S
- 6-Methyl-2-[(2-phenoxyacetyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide353774-31-9C18H20N2O3S
- N-Benzyl-1-methylsulfonyl-3,4-dihydro-2H-quinoline-6-carboxamide878576-88-6C18H20N2O3S
- 2-(2-Methylphenyl)-N-[4-(prop-2-enylsulfamoyl)phenyl]acetamide898130-24-0C18H20N2O3S
- 2-(2-Methoxybenzamido)-N-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamide892981-59-8C18H20N2O3S
- 4-Ethyl-N-(3-(2-oxopyrrolidin-1-yl)phenyl)benzenesulfonamide941872-06-6C18H20N2O3S
- 3-(Benzenesulfonamido)-N-(2,3-dihydro-1H-inden-5-yl)propanamide930066-32-3C18H20N2O3S
- N-(2-(Pyridin-3-yl)-2-tosylethyl)cyclopropanecarboxamide904808-83-9C18H20N2O3S
- 2-[(2-Methoxy-3-methylbenzoyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide900764-38-7C18H20N2O3S
- 1-((2,4-Dimethylphenyl)sulfonyl)-N-methylindoline-2-carboxamide1103515-92-9C18H20N2O3S
- 2-Ethyl-1-[(4-propoxynaphthyl)sulfonyl]imidazole1043689-26-4C18H20N2O3S
- N-(1-Methyl-2-Oxo-1,2,3,4-Tetrahydroquinolin-6-Yl)-1-(4-Methylphenyl)methanesulfonamide922058-97-7C18H20N2O3S
- 1-(3-Methoxyphenyl)-5-oxo-N-[2-(thiophen-3-yl)ethyl]pyrrolidine-3-carboxamide1251577-97-5C18H20N2O3S
- N-(2-Methoxyphenethyl)-1-(thiophene-2-carbonyl)azetidine-3-carboxamide1286711-07-6C18H20N2O3S
- 3-(Thiophene-2-carboxamido)cyclohexyl phenylcarbamate1351609-11-4C18H20N2O3S
- Methyl 5-(phenethylcarbamoyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine-4-carboxylate1428347-35-6C18H20N2O3S
- (4-Phenyltetrahydro-2H-pyran-4-yl)(3-(thiazol-2-yloxy)azetidin-1-yl)methanone1705245-89-1C18H20N2O3S
- N-[(3,4-Dimethylphenyl)carbamothioyl]-3,4-dimethoxybenzamide335214-11-4C18H20N2O3S
- N-[(3-Methoxyphenyl)carbamothioyl]-4-propan-2-yloxybenzamide428472-25-7C18H20N2O3S
- N-[(2-Methoxyphenyl)carbamothioyl]-4-propan-2-yloxybenzamide428483-18-5C18H20N2O3S
- N-(4-{[Benzyl(methyl)amino]sulfonyl}phenyl)cyclopropanecarboxamide514807-30-8C18H20N2O3S
- N-(4-{[(2-Phenylethyl)amino]sulfonyl}phenyl)cyclopropanecarboxamide651296-97-8C18H20N2O3S
- Methyl 2-(pyridine-4-carbonylamino)-4,5,6,7,8,9-hexahydrocycloocta[b]thiophene-3-carboxylate540521-39-9C18H20N2O3S
- N-Cyclopropyl-2-(N-(4-methylphenyl)sulfonylanilino)acetamide722464-93-9C18H20N2O3S
- 8-[(Dimethylamino)methyl]-6-ethyl-7-hydroxy-3-(4-methyl-1,3-thiazol-2-yl)-4H-chromen-4-one383386-75-2C18H20N2O3S
- Ethyl 4-{[(2-methoxybenzyl)carbamothioyl]amino}benzoate516459-37-3C18H20N2O3S
- Ethyl 4-{[(3-methoxybenzyl)carbamothioyl]amino}benzoate516459-23-7C18H20N2O3S
- 1-Methyl-6-[(4-methyl-1-piperidinyl)sulfonyl]benzo[cd]indol-2(1H)-one794552-78-6C18H20N2O3S
- (3Z)-1-Heptyl-3-(4-hydroxy-2-oxo-1,3-thiazol-5(2H)-ylidene)-1,3-dihydro-2H-indol-2-one304893-05-8C18H20N2O3S
- N-[(2-Methoxyphenyl)carbamothioyl]-4-propoxybenzamide428470-75-1C18H20N2O3S
- N-[(4-Methoxyphenyl)carbamothioyl]-3-propoxybenzamide428836-41-3C18H20N2O3S
- 2-(Isopropyl(phenyl)amino)-2-oxoethyl 2-(methylthio)nicotinate722490-33-7C18H20N2O3S
- N-[(2,4-Dimethoxyphenyl)carbamothioyl]-3,4-dimethylbenzamide364383-65-3C18H20N2O3S
- N-{4-[(Allylamino)sulfonyl]phenyl}-3-phenylpropanamide819064-94-3C18H20N2O3S
- 2-(4-Methoxybenzamido)-5-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamide476280-24-7C18H20N2O3S
- N-[1,3-Dioxo-8-(propan-2-ylidene)octahydro-2H-4,7-methanoisoindol-2-yl]-5-methylthiophene-3-carboxamide1024315-95-4C18H20N2O3S
- 1-[(2,5-Dimethyl-4-propoxyphenyl)sulfonyl]-1H-benzimidazole853752-31-5C18H20N2O3S
- 1-(5-tert-Butyl-2-methoxyphenyl)sulfonylbenzimidazole791843-63-5C18H20N2O3S
- 1-(3-tert-Butyl-4-methoxyphenyl)sulfonylbenzimidazole853903-11-4C18H20N2O3S
- 3-Oxo-2-(2-thienylmethyl)-2,3-dihydro-1H-isoindol-1-yl N-(tert-butyl)carbamate866008-23-3C18H20N2O3S
- (3-(Methylsulfonyl)phenyl)(4-phenylpiperazin-1-yl)methanone896296-69-8C18H20N2O3S
Frequently asked questions
What is the molar mass of C18H20N2O3S?
The molar mass of C18H20N2O3S is 344.43 g/mol, calculated from standard atomic weights for 18 carbon atoms, 20 hydrogen atoms, 2 nitrogen atoms, 3 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 344.1195 Da.
How many compounds have the formula C18H20N2O3S?
CompoundList lists 453 compounds with the molecular formula C18H20N2O3S, including Ethyl 6-methyl-2-(pyridine-3-carbonylamino)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate, Ethyl 6-methyl-2-[(pyridin-4-ylcarbonyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate, Isopropyl 8-methyl-4-oxo-6-phenyl-3,4-dihydro-2H,6H-pyrimido[2,1-B][1,3]thiazine-7-carboxylate. 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 C18H20N2O3S?
C18H20N2O3S has a degree of unsaturation of 10. 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.