Molecular formula
C18H21NO4S
219 compounds have this formula on CompoundList.
- Molar mass
- 347.43g/mol
- Monoisotopic mass
- 347.1191Da
- Atoms
- 45
- Elements
- 5
- Rings plus double bonds
- 9
The formula C18H21NO4S describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom, 4 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 × 1862.23%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 216.09%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 14.03%14.007 × 1 = 14.007 g/mol
- O Oxygen × 418.42%15.999 × 4 = 63.996 g/mol
- S Sulfur × 19.23%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C18H21NO4S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 219 compounds
4-((4-tert-Butylbenzenesulfonamido)methyl)benzoic acid
CAS 440350-92-5C18H21NO4S
![4-({[(2,3,5,6-Tetramethylphenyl)sulfonyl]amino}methyl)benzoic acid chemical structure, C18H21NO4S, CAS 690646-18-5](/s/PQPFGHOAPLHTAE-UHFFFAOYSA-N.svg)
4-({[(2,3,5,6-Tetramethylphenyl)sulfonyl]amino}methyl)benzoic acid
CAS 690646-18-5C18H21NO4S
6-t-Butyl-2-(furan-2-carboxamido)-4,5,6,7-tetrahydrobenzo(b)thiophene-3-carboxylic acid
CAS 407587-33-1C18H21NO4S
Ethyl 1-naphthalen-2-ylsulfonylpiperidine-4-carboxylate
CAS 179050-86-3C18H21NO4S
![5-Thiazolecarboxylic acid, 2-[3-formyl-4-(2-methylpropoxy)phenyl]-4-methyl-, ethyl ester chemical structure, C18H21NO4S, CAS 161798-03-4](/s/AIQMFFCWDAIGNV-UHFFFAOYSA-N.svg)
5-Thiazolecarboxylic acid, 2-[3-formyl-4-(2-methylpropoxy)phenyl]-4-methyl-, ethyl ester
CAS 161798-03-4C18H21NO4S
3-(Azepan-1-ylcarbonyl)-7,8-dimethoxy-1H-isothiochromen-1-one
CAS 627487-33-6C18H21NO4S
![5-[(4-Butylphenyl)sulfamoyl]-2-methylbenzoic acid chemical structure, C18H21NO4S, CAS 377769-51-2](/s/OTSNMUDJXINAKM-UHFFFAOYSA-N.svg)
5-[(4-Butylphenyl)sulfamoyl]-2-methylbenzoic acid
CAS 377769-51-2C18H21NO4S
![4'-Methoxy-N-(tetrahydro-2-furanylmethyl)[1,1'-biphenyl]-4-sulfonamide chemical structure, C18H21NO4S, CAS 667912-48-3](/s/OGVLVIMYKUCEGD-UHFFFAOYSA-N.svg)
4'-Methoxy-N-(tetrahydro-2-furanylmethyl)[1,1'-biphenyl]-4-sulfonamide
CAS 667912-48-3C18H21NO4S
4-(5-tert-Butyl-2-methylbenzenesulfonamido)benzoic acid
CAS 380342-90-5C18H21NO4S
![(E)-3-(3,4-Dimethoxyphenyl)-N-[2-(furan-2-ylmethylsulfanyl)ethyl]prop-2-enamide chemical structure, C18H21NO4S, CAS 528835-83-8](/s/GHKFHNIYSYJGGR-SOFGYWHQSA-N.svg)
(E)-3-(3,4-Dimethoxyphenyl)-N-[2-(furan-2-ylmethylsulfanyl)ethyl]prop-2-enamide
CAS 528835-83-8C18H21NO4S
Ethyl 1-naphthalen-2-ylsulfonylpiperidine-3-carboxylate
CAS 179051-23-1C18H21NO4S
N-(1,1-Dioxidotetrahydro-3-thienyl)-N-(4-ethylbenzyl)-2-furamide
CAS 620563-17-9C18H21NO4S
3-((4-Butylphenyl)sulfamoyl)-4-methylbenzoic acid
CAS 377769-67-0C18H21NO4S
![Isopropyl 2-(2-furoylamino)-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate chemical structure, C18H21NO4S, CAS 352684-25-4](/s/DKMFEWIELGMQPE-UHFFFAOYSA-N.svg)
Isopropyl 2-(2-furoylamino)-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate
CAS 352684-25-4C18H21NO4S
![Isopropyl 4,5-dimethyl-2-{[3-(5-methyl-2-furyl)acryloyl]amino}-3-thiophenecarboxylate chemical structure, C18H21NO4S, CAS 1164479-38-2](/s/JJNNCBJYWSPDGU-CMDGGOBGSA-N.svg)
Isopropyl 4,5-dimethyl-2-{[3-(5-methyl-2-furyl)acryloyl]amino}-3-thiophenecarboxylate
CAS 1164479-38-2C18H21NO4S
2-Ethylsulfanyl-N-(3,4,5-trimethoxyphenyl)benzamide
CAS 838883-16-2C18H21NO4S
![N-(1,1-Dioxidotetrahydrothiophen-3-yl)-3-methyl-N-[(5-methylfuran-2-yl)methyl]benzamide chemical structure, C18H21NO4S, CAS 838873-92-0](/s/NIHOEBSJOJZSER-UHFFFAOYSA-N.svg)
N-(1,1-Dioxidotetrahydrothiophen-3-yl)-3-methyl-N-[(5-methylfuran-2-yl)methyl]benzamide
CAS 838873-92-0C18H21NO4S
![N-(1,1-Dioxidotetrahydrothiophen-3-yl)-2-methyl-N-[(5-methylfuran-2-yl)methyl]benzamide chemical structure, C18H21NO4S, CAS 838899-94-8](/s/WDFHVVVIGRWEFK-UHFFFAOYSA-N.svg)
N-(1,1-Dioxidotetrahydrothiophen-3-yl)-2-methyl-N-[(5-methylfuran-2-yl)methyl]benzamide
CAS 838899-94-8C18H21NO4S
![2-Methylsulfanyl-N-[(3,4,5-trimethoxyphenyl)methyl]benzamide chemical structure, C18H21NO4S, CAS 341020-49-3](/s/JCWZBFVLVUEGCP-UHFFFAOYSA-N.svg)
2-Methylsulfanyl-N-[(3,4,5-trimethoxyphenyl)methyl]benzamide
CAS 341020-49-3C18H21NO4S
N-(1,3-Benzodioxol-5-ylmethyl)-5-isopropyl-2-methylbenzenesulfonamide
CAS 433956-30-0C18H21NO4S
![N-(2,6-Dimethylphenyl)-3-[(4-methoxyphenyl)sulfonyl]propanamide chemical structure, C18H21NO4S, CAS 698367-30-5](/s/JNJMNADMNLHORF-UHFFFAOYSA-N.svg)
N-(2,6-Dimethylphenyl)-3-[(4-methoxyphenyl)sulfonyl]propanamide
CAS 698367-30-5C18H21NO4S
![Ethyl 2-{[(2,6-dioxocyclohexylidene)methyl]amino}-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate chemical structure, C18H21NO4S, CAS 532951-78-3](/s/BZPHYZCUMYTCOI-VXLYETTFSA-N.svg)
Ethyl 2-{[(2,6-dioxocyclohexylidene)methyl]amino}-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate
CAS 532951-78-3C18H21NO4S
(2R)-4-Biphenyl-4-yl-N-hydroxy-2-methyl-2-(methylsulfonyl)butanamide
CAS 1289620-49-0C18H21NO4S
4-tert-Butyl-N-(2,3-dihydro-1,4-benzodioxin-6-yl)benzenesulfonamide
CAS 379247-97-9C18H21NO4S
- 3-[Benzyl-(toluene-4-sulfonyl)-amino]-2-methyl-propionic acid301320-51-4C18H21NO4S
- 2-(Benzenesulfonyl)-6,7-dimethoxy-1-methyl-1,2,3,4-tetrahydroisoquinoline65492-83-3C18H21NO4S
- 4-Acetyl-N-(2-(3,5-dimethylphenoxy)ethyl)benzenesulfonamide1105221-70-2C18H21NO4S
- 3,4-Dimethoxy-N-(1,2,3,4-tetrahydronaphthalen-1-yl)benzenesulfonamide185122-40-1C18H21NO4S
- 2-(5-tert-Butyl-2-methylbenzenesulfonamido)benzoic acid380342-58-5C18H21NO4S
- Methyl 2-[(4-tert-butylphenyl)sulfonylamino]benzoate305374-37-2C18H21NO4S
- Benzeneacetic acid, 2-methoxy-5-(((2-methyl-3-furanyl)thioxomethyl)amino)-, 1-methylethyl ester178869-97-1C18H21NO4S
- 2-((2,2-Dimethyl-2,3-dihydrobenzofuran-7-yl)oxy)-N-(2-hydroxy-2-(thiophen-2-yl)ethyl)acetamide1351652-55-5C18H21NO4S
- Methyl 4-[(2,5-diethylphenyl)sulfonylamino]benzoate670266-68-9C18H21NO4S
- Methyl 2-(4-isopropoxybenzamido)-4,5-dimethylthiophene-3-carboxylate896616-10-7C18H21NO4S
- Ethyl 4-{ethyl[(4-methylphenyl)sulfonyl]amino}benzoate70539-63-8C18H21NO4S
- N-(3,5-Dimethylphenyl)-3-((4-methoxyphenyl)sulfonyl)propanamide923086-87-7C18H21NO4S
- N-(2,4,6-Trimethylphenyl)-3,4-dihydro-2H-1,5-benzodioxepine-7-sulfonamide1007797-89-8C18H21NO4S
- 4-((4-Methoxy-2-methylphenyl)sulfonyl)-2-phenylmorpholine953959-58-5C18H21NO4S
- (2S)-4-Biphenyl-4-yl-N-hydroxy-2-methyl-2-(methylsulfonyl)butanamide1354546-42-1C18H21NO4S
- N-(2-Cyclopropyl-2-hydroxy-2-(thiophen-2-yl)ethyl)-2-(2-methoxyphenoxy)acetamide1396868-38-4C18H21NO4S
- Ethyl 6-ethyl-2-[(furan-2-ylcarbonyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate353478-78-1C18H21NO4S
- Ethyl 6-methyl-2-[(5-methyl-2-furoyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate315677-49-7C18H21NO4S
- Methyl 4-[(2,3,5,6-tetramethylphenyl)sulfonylamino]benzoate881302-23-4C18H21NO4S
- Methyl 6-(tert-butyl)-2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate438532-45-7C18H21NO4S
- Ethyl 2-[(2-ethoxybenzoyl)amino]-4,5-dimethylthiophene-3-carboxylate314055-25-9C18H21NO4S
- Methyl 4-([(3,4-dimethylphenyl)(methylsulfonyl)amino]methyl)benzoate358377-75-0C18H21NO4S
- Methyl N-(2,5-dimethylphenyl)-N-[(4-methylphenyl)sulfonyl]glycinate333454-38-9C18H21NO4S
- Methyl N-(3,4-dimethylphenyl)-N-[(4-methylphenyl)sulfonyl]glycinate503839-10-9C18H21NO4S
- Methyl N-(4-isopropylphenyl)-N-(phenylsulfonyl)glycinate331750-13-1C18H21NO4S
- N-(4-Isopropylphenyl)-N-[(4-methylphenyl)sulfonyl]glycine333458-91-6C18H21NO4S
- Methyl N-(2,4-dimethylphenyl)-N-[(4-methylphenyl)sulfonyl]glycinate425612-24-4C18H21NO4S
- Methyl 2-(5,6-dimethyl-1,3-dioxo-3a,4,7,7a-tetrahydroisoindol-2-yl)-4,5-dimethylthiophene-3-carboxylate300812-58-2C18H21NO4S
- (Benzenesulfonylphenylmethyl)carbamic acid tert-butyl ester155396-71-7C18H21NO4S
- (3-Methoxyphenyl)methyl 3-piperidin-4-yloxythiophene-2-carboxylate1443208-16-9C18H21NO4S
- Ethyl 4,5-dimethyl-2-(3-phenoxypropanoylamino)thiophene-3-carboxylate312274-24-1C18H21NO4S
- Ethyl 2-(2-(4-methoxyphenyl)acetamido)-4,5-dimethylthiophene-3-carboxylate331749-49-6C18H21NO4S
- 6,7-Dimethoxy-2-(4-methylphenyl)sulfonyl-3,4-dihydro-1H-isoquinoline14165-82-3C18H21NO4S
- Benzyl N-[2-methyl-1-(phenylsulfonyl)propyl]-carbamate439095-25-7C18H21NO4S
- Ethyl 4-[(2-methylbenzyl)(methylsulfonyl)amino]benzoate765925-52-8C18H21NO4S
- Methyl 2-[(2-methyl-3-furoyl)amino]-4,5,6,7,8,9-hexahydrocycloocta[b]thiophene-3-carboxylate544665-70-5C18H21NO4S
- Methyl 5-ethyl-2-[(3-propoxybenzoyl)amino]-3-thiophenecarboxylate350989-10-5C18H21NO4S
- 3-Phenyl-3-[(2,4,5-trimethylphenyl)sulfonylamino]propanoic acid494826-92-5C18H21NO4S
- 3-(5-tert-Butyl-2-methylbenzenesulfonamido)benzoic acid380431-61-8C18H21NO4S
- Isopropyl 2-(2-furoylamino)-6-methyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate329221-80-9C18H21NO4S
- Methyl 2-[(2-ethoxybenzoyl)amino]-4-ethyl-5-methyl-3-thiophenecarboxylate445287-87-6C18H21NO4S
- Methyl N-(2,3-dimethylphenyl)-N-[(4-methylphenyl)sulfonyl]glycinate446046-86-2C18H21NO4S
- 3-[(2-Methoxyphenyl)sulfonyl]-4,6-dimethyl-1-(2-methyl-2-propenyl)-2(1H)-pyridinone866051-45-8C18H21NO4S
- Propyl 2-[(2-methyl-3-furoyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate313386-35-5C18H21NO4S
- Ethyl 2-[(3-ethoxybenzoyl)amino]-5-ethylthiophene-3-carboxylate350989-20-7C18H21NO4S
- Ethyl 4-(4-methoxyphenyl)-2-(2-methylpropanoylamino)thiophene-3-carboxylate374601-63-5C18H21NO4S
- 4-Pentamethylbenzenesulfonamidobenzoic acid790272-45-6C18H21NO4S
- Methyl N-(3,5-dimethylphenyl)-N-[(4-methylphenyl)sulfonyl]glycinate363579-41-3C18H21NO4S
- 3-(4-Isopropylphenyl)-3-[(phenylsulfonyl)amino]propanoic acid861207-56-9C18H21NO4S
- Methyl N-(4-ethylphenyl)-N-[(4-methylphenyl)sulfonyl]glycinate884987-64-8C18H21NO4S
- n,n-Bis(4-methoxybenzyl)ethenesulfonamide133777-96-5C18H21NO4S
- Benzenesulfonic acid, 2-amino-5-(4-cyclohexylphenoxy)-68957-41-5C18H21NO4S
- Methyl 2-[(3-ethoxybenzoyl)amino]-5-propylthiophene-3-carboxylate540520-13-6C18H21NO4S
- Methyl 2-{[(4-ethylphenoxy)acetyl]amino}-4,5-dimethyl-3-thiophenecarboxylate445231-87-8C18H21NO4S
- Ethyl 2-(furan-2-carbonylamino)-4,5,6,7,8,9-hexahydrocycloocta[b]thiophene-3-carboxylate438619-20-6C18H21NO4S
- Ethyl 2-[(2-hydroxy-5-methoxybenzyl)amino]-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate380643-96-9C18H21NO4S
- Propyl 2-[(4-methoxybenzoyl)amino]-4,5-dimethylthiophene-3-carboxylate445004-18-2C18H21NO4S
- Ethyl 5-methyl-2-[(3-propoxybenzoyl)amino]thiophene-3-carboxylate445004-56-8C18H21NO4S
- Methyl 2-(3-(5-methylfuran-2-yl)propanamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate838813-66-4C18H21NO4S
- Ethyl 4,5-dimethyl-2-{[(2-methylphenoxy)acetyl]amino}thiophene-3-carboxylate325823-42-5C18H21NO4S
- 2,6-Dimethyl-4-((4-phenoxyphenyl)sulfonyl)morpholine314043-25-9C18H21NO4S
- Ethyl 4,5-dimethyl-2-(2-phenoxypropanoylamino)thiophene-3-carboxylate663218-15-3C18H21NO4S
- Tricyclo[5.2.1.0^{2,6}]dec-4-en-8-yl N-(4-methylbenzenesulfonyl)carbamate1005046-58-1C18H21NO4S
- N-(2,5-Dimethoxyphenyl)-4-thiophen-2-yloxane-4-carboxamide877649-85-9C18H21NO4S
- Ethyl 2-[(4-ethoxybenzoyl)amino]-4,5-dimethylthiophene-3-carboxylate362601-92-1C18H21NO4S
- N-(1,3-Benzodioxol-5-ylmethyl)-4-tert-butylbenzenesulfonamide361983-31-5C18H21NO4S
- Oxalic acid--1-benzyl-3-methyl-3-(thiophen-2-yl)pyrrolidine (1/1)73604-77-0C18H21NO4S
- 2-(tert-Butylamino)-1-(4-methoxyphenyl)-2-oxoethyl thiophene-2-carboxylate606114-60-7C18H21NO4S
- Methyl 4-ethyl-5-methyl-2-[[2-(2-methylphenoxy)acetyl]amino]thiophene-3-carboxylate492428-57-6C18H21NO4S
- N-(2,4-Dimethoxyphenyl)-4-thiophen-2-yloxane-4-carboxamide877650-58-3C18H21NO4S
- N-(3,4-Dimethoxyphenyl)-4-(thiophen-2-yl)tetrahydro-2H-pyran-4-carboxamide877651-22-4C18H21NO4S
- 2-Benzyl 4-tert-Butyl 5-amino-3-methylthiophene-2,4-dicarboxylate216663-40-0C18H21NO4S
- 2-[(4-Methylphenyl)sulfonyl]-7-azabicyclo[2.2.1]hepta-2,5-diene-7-carboxylic acid tert-butyl ester160732-46-7C18H21NO4S
- N-(1,1-Dioxidotetrahydrothiophen-3-yl)-4-methyl-N-[(5-methylfuran-2-yl)methyl]benzamide879930-29-7C18H21NO4S
- N-((1,1-Dioxidotetrahydrothiophen-3-yl)methyl)-2-ethoxy-1-naphthamide1235652-35-3C18H21NO4S
- 7-Methoxy-3-(toluene-4-sulfonyl)-2,3,4,5-tetrahydro-1H-benzo[d]azepin-1-ol81593-59-1C18H21NO4S
Frequently asked questions
What is the molar mass of C18H21NO4S?
The molar mass of C18H21NO4S is 347.43 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom, 4 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 347.1191 Da.
How many compounds have the formula C18H21NO4S?
CompoundList lists 219 compounds with the molecular formula C18H21NO4S, including 4-((4-tert-Butylbenzenesulfonamido)methyl)benzoic acid, 4-({[(2,3,5,6-Tetramethylphenyl)sulfonyl]amino}methyl)benzoic acid, 6-t-Butyl-2-(furan-2-carboxamido)-4,5,6,7-tetrahydrobenzo(b)thiophene-3-carboxylic acid. 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 C18H21NO4S?
C18H21NO4S 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.