Molecular formula
C18H21N3O5S
154 compounds have this formula on CompoundList.
- Molar mass
- 391.44g/mol
- Monoisotopic mass
- 391.1202Da
- Atoms
- 48
- Elements
- 5
- Rings plus double bonds
- 10
The formula C18H21N3O5S describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms, 5 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 × 1855.23%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 215.41%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 310.73%14.007 × 3 = 42.021 g/mol
- O Oxygen × 520.44%15.999 × 5 = 79.995 g/mol
- S Sulfur × 18.19%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C18H21N3O5S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 154 of 154 compounds
![1-[(1-Cyanocyclohexyl)carbamoyl]ethyl 2-[(4-nitrophenyl)sulfanyl]acetate chemical structure, C18H21N3O5S, CAS 1016470-53-3](/s/VDFQZWVWETXBQR-UHFFFAOYSA-N.svg)
1-[(1-Cyanocyclohexyl)carbamoyl]ethyl 2-[(4-nitrophenyl)sulfanyl]acetate
CAS 1016470-53-3C18H21N3O5S
![1-{[1-(2H-1,3-Benzodioxole-5-carbonyl)-3,5-dimethyl-1H-pyrazol-4-yl]sulfonyl}piperidine chemical structure, C18H21N3O5S, CAS 1020454-40-3](/s/LLKUHMXNOHKJRE-UHFFFAOYSA-N.svg)
1-{[1-(2H-1,3-Benzodioxole-5-carbonyl)-3,5-dimethyl-1H-pyrazol-4-yl]sulfonyl}piperidine
CAS 1020454-40-3C18H21N3O5S
![N-(1,1-Dioxidotetrahydrothiophen-3-yl)-6,7-dimethoxy-1-methyl-1,4-dihydroindeno[1,2-c]pyrazole-3-carboxamide chemical structure, C18H21N3O5S, CAS 1144449-86-4](/s/BPAYAKVCBWQCOM-UHFFFAOYSA-N.svg)
N-(1,1-Dioxidotetrahydrothiophen-3-yl)-6,7-dimethoxy-1-methyl-1,4-dihydroindeno[1,2-c]pyrazole-3-carboxamide
CAS 1144449-86-4C18H21N3O5S
2-(3-(Morpholinosulfonyl)-2-oxopyridin-1(2H)-yl)-N-(o-tolyl)acetamide
CAS 1251617-06-7C18H21N3O5S
2-(3-(Morpholinosulfonyl)-2-oxopyridin-1(2H)-yl)-N-(m-tolyl)acetamide
CAS 1251670-99-1C18H21N3O5S
2-(3-(Morpholinosulfonyl)-2-oxopyridin-1(2H)-yl)-N-(p-tolyl)acetamide
CAS 1251621-75-6C18H21N3O5S
N-(1,1-Dioxidotetrahydrothiophen-3-yl)-2-(3-(2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-methylacetamide
CAS 1232789-51-3C18H21N3O5S
![N-(1,1-Dioxidotetrahydrothiophen-3-yl)-2-[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-methylacetamide chemical structure, C18H21N3O5S, CAS 1232786-61-6](/s/DWOUGPUFFWPPOP-UHFFFAOYSA-N.svg)
N-(1,1-Dioxidotetrahydrothiophen-3-yl)-2-[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-methylacetamide
CAS 1232786-61-6C18H21N3O5S
N-(1,3-Benzodioxol-5-ylmethyl)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-3,5-dimethyl-1H-pyrazole-4-carboxamide
CAS 1374520-20-3C18H21N3O5S
6-(4-((4-Methoxyphenyl)sulfonyl)piperidine-1-carbonyl)-2-methylpyridazin-3(2H)-one
CAS 1448046-65-8C18H21N3O5S
Methyl (4-(N-(4-(2-(dimethylamino)-2-oxoethyl)phenyl)sulfamoyl)phenyl)carbamate
CAS 2034408-77-8C18H21N3O5S
![N-[(1r,4r)-4-(Pyrazin-2-yloxy)cyclohexyl]-2,3-dihydro-1,4-benzodioxine-6-sulfonamide chemical structure, C18H21N3O5S, CAS 2034397-34-5](/s/JNNLIWUAMYMSJY-UHFFFAOYSA-N.svg)
N-[(1r,4r)-4-(Pyrazin-2-yloxy)cyclohexyl]-2,3-dihydro-1,4-benzodioxine-6-sulfonamide
CAS 2034397-34-5C18H21N3O5S
![3-((1-((3,4-Dihydro-2H-benzo[b][1,4]dioxepin-7-yl)sulfonyl)pyrrolidin-3-yl)oxy)-6-methylpyridazine chemical structure, C18H21N3O5S, CAS 2034223-26-0](/s/OFUIQXNPADCZAB-UHFFFAOYSA-N.svg)
3-((1-((3,4-Dihydro-2H-benzo[b][1,4]dioxepin-7-yl)sulfonyl)pyrrolidin-3-yl)oxy)-6-methylpyridazine
CAS 2034223-26-0C18H21N3O5S
![3-((1-((3,4-Dihydro-2H-benzo[b][1,4]dioxepin-7-yl)sulfonyl)piperidin-3-yl)oxy)pyridazine chemical structure, C18H21N3O5S, CAS 2034501-91-0](/s/JTRARUCAOSPOAN-UHFFFAOYSA-N.svg)
3-((1-((3,4-Dihydro-2H-benzo[b][1,4]dioxepin-7-yl)sulfonyl)piperidin-3-yl)oxy)pyridazine
CAS 2034501-91-0C18H21N3O5S
![3-((1-((2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)sulfonyl)piperidin-3-yl)oxy)-6-methylpyridazine chemical structure, C18H21N3O5S, CAS 2034226-75-8](/s/ATZXANQGHRFFTL-UHFFFAOYSA-N.svg)
3-((1-((2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)sulfonyl)piperidin-3-yl)oxy)-6-methylpyridazine
CAS 2034226-75-8C18H21N3O5S
![2-((1-((3,4-Dihydro-2H-benzo[b][1,4]dioxepin-7-yl)sulfonyl)piperidin-3-yl)oxy)pyrazine chemical structure, C18H21N3O5S, CAS 2034485-20-4](/s/JQRICHUBWZOZQA-UHFFFAOYSA-N.svg)
2-((1-((3,4-Dihydro-2H-benzo[b][1,4]dioxepin-7-yl)sulfonyl)piperidin-3-yl)oxy)pyrazine
CAS 2034485-20-4C18H21N3O5S
N-(4-Sulfamoylphenyl)-6-((tetrahydro-2H-pyran-4-yl)methoxy)nicotinamide
CAS 2034616-42-5C18H21N3O5S
Methyl (4-((4-(pyridin-4-yloxy)piperidin-1-yl)sulfonyl)phenyl)carbamate
CAS 2034577-71-2C18H21N3O5S
2-(4-((4-(Pyridin-4-yloxy)piperidin-1-yl)sulfonyl)phenoxy)acetamide
CAS 2034302-10-6C18H21N3O5S
2-(4-((3-((6-Methylpyridin-2-yl)oxy)pyrrolidin-1-yl)sulfonyl)phenoxy)acetamide
CAS 1903040-62-9C18H21N3O5S
Methyl (4-((3-(pyridin-4-yloxy)piperidin-1-yl)sulfonyl)phenyl)carbamate
CAS 2034574-96-2C18H21N3O5S
![3,5-Dimethoxy-N-(2-(3-methyl-2,2-dioxidobenzo[c][1,2,5]thiadiazol-1(3H)-yl)ethyl)benzamide chemical structure, C18H21N3O5S, CAS 2034488-00-9](/s/VXNHMKUAUXCUBR-UHFFFAOYSA-N.svg)
3,5-Dimethoxy-N-(2-(3-methyl-2,2-dioxidobenzo[c][1,2,5]thiadiazol-1(3H)-yl)ethyl)benzamide
CAS 2034488-00-9C18H21N3O5S
![2-(2-Methoxyphenoxy)-N-(2-(3-methyl-2,2-dioxidobenzo[c][1,2,5]thiadiazol-1(3H)-yl)ethyl)acetamide chemical structure, C18H21N3O5S, CAS 2034237-99-3](/s/IMSVJDCXWWJDCL-UHFFFAOYSA-N.svg)
2-(2-Methoxyphenoxy)-N-(2-(3-methyl-2,2-dioxidobenzo[c][1,2,5]thiadiazol-1(3H)-yl)ethyl)acetamide
CAS 2034237-99-3C18H21N3O5S
1-(3-(1,1-Dioxido-7-phenyl-1,4-thiazepan-4-yl)-3-oxopropyl)pyrimidine-2,4(1H,3H)-dione
CAS 2034534-50-2C18H21N3O5S
- 1-(2,3-Dihydro-1,4-benzodioxine-2-carbonyl)-4-[(1-methyl-1H-imidazol-2-yl)sulfonyl]piperidine2310199-58-5C18H21N3O5S
- 2-(Benzo[d][1,3]dioxol-5-yl)-1-(4-((1-methyl-1H-imidazol-2-yl)sulfonyl)piperidin-1-yl)ethanone2320465-04-9C18H21N3O5S
- 4-((1-((2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)sulfonyl)piperidin-4-yl)oxy)-2-methylpyrimidine2097894-51-2C18H21N3O5S
- Methyl 4-(N-(2-(3-oxo-5,6,7,8-tetrahydrocinnolin-2(3H)-yl)ethyl)sulfamoyl)benzoate2034366-34-0C18H21N3O5S
- N-(2-(3-Oxo-3,5,6,7-tetrahydro-2H-cyclopenta[c]pyridazin-2-yl)ethyl)-3,4-dihydro-2H-benzo[b][1,4]dioxepine-7-sulfonamide2034227-28-4C18H21N3O5S
- 3-{[1-(2,3-Dihydro-1,4-benzodioxine-6-sulfonyl)piperidin-4-yl]methyl}-3,4-dihydropyrimidin-4-one2176202-21-2C18H21N3O5S
- N~2~-Butyl-N-[4-(4-nitrobenzene-1-sulfonyl)phenyl]glycinamide60515-80-2C18H21N3O5S
- 2-[[2-(Methanesulfonamido)benzoyl]amino]-N-(2-methoxyethyl)benzamide831238-10-9C18H21N3O5S
- 4-Methoxy-3-(morpholin-4-ylcarbonyl)-N-(pyridin-2-ylmethyl)benzenesulfonamide917218-88-3C18H21N3O5S
- 2-[(5-Methyl-1,2-oxazol-3-yl)oxy]-1-[4-(2-phenylethenesulfonyl)piperazin-1-yl]ethan-1-one1110893-52-1C18H21N3O5S
- N-[3-Nitro-4-[[(tetrahydro-2H-pyran-4-yl)methyl]amino]phenyl]-benzenesulfonamide849350-80-7C18H21N3O5S
- N-(4-Sulfamoylphenethyl)-6-((tetrahydrofuran-3-yl)oxy)nicotinamide2034312-43-9C18H21N3O5S
- N-(4-Sulfamoylbenzyl)-6-((tetrahydro-2H-pyran-4-yl)oxy)nicotinamide1903914-86-2C18H21N3O5S
- 4-{[1-(2,3-Dihydro-1,4-benzodioxine-6-sulfonyl)pyrrolidin-3-yl]oxy}-2,6-dimethylpyrimidine2097894-58-9C18H21N3O5S
- Ethyl 3-({(E)-[1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-5-oxo-1,5-dihydro-4H-pyrazol-4-ylidene]methyl}amino)benzoate929810-11-7C18H21N3O5S
- Ethyl 4-({(E)-[1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-5-oxo-1,5-dihydro-4H-pyrazol-4-ylidene]methyl}amino)benzoate929844-13-3C18H21N3O5S
- 1-(4-Methoxy-3-nitrobenzenesulfonyl)-4-(4-methylphenyl)piperazine2361772-91-8C18H21N3O5S
- N-{1-[N'-(2,5-dimethylfuran-3-carbonyl)hydrazinecarbonyl]ethyl}-2-phenylethene-1-sulfonamide1031794-86-1C18H21N3O5S
- N-{1-[N'-(furan-2-carbonyl)hydrazinecarbonyl]-2-methylpropyl}-2-phenylethene-1-sulfonamide1103097-98-8C18H21N3O5S
- 3-[5-Methoxy-1-(1,3,5-trimethyl-1H-pyrazole-4-sulfonyl)-1H-indol-3-yl]-propionic acid929254-84-2C18H21N3O5S
- 3-[1-(1,2-Dimethyl-1H-imidazole-4-sulfonyl)-6-ethoxy-1H-indol-3-yl]-propionic acid929256-30-4C18H21N3O5S
- Sulfuric acid--N,N-dimethyl-2-[(2-phenylquinazolin-4-yl)oxy]ethan-1-amine (1/1)831226-58-5C18H21N3O5S
- 3-Methoxy-N-[6-(2-morpholin-4-yl-2-oxo-ethyl)-pyridin-2-yl]-benzenesulfonamide887149-79-3C18H21N3O5S
- 2-{[1-(2,3-Dihydro-1-benzofuran-5-sulfonyl)piperidin-4-yl]oxy}-5-methoxypyrimidine2548998-21-4C18H21N3O5S
- 3-{[1-(2,3-Dihydro-1,4-benzodioxine-6-sulfonyl)pyrrolidin-3-yl]methoxy}-6-methylpyridazine2770589-08-5C18H21N3O5S
- 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 6-[[(acetylamino)phenylacetyl]amino]-3,3-dimethyl-7-oxo-, [2S-[2I+/-,5I+/-,6I(2)(S*)]]-43181-08-4C18H21N3O5S
- 3-[3-(4-{[(Benzyloxy)carbonyl]amino}thian-4-yl)-1,2,4-oxadiazol-5-yl]propanoic acid2171928-58-6C18H21N3O5S
- 3-[3-(3-{[(Benzyloxy)carbonyl]amino}thian-3-yl)-1,2,4-oxadiazol-5-yl]propanoic acid2171688-51-8C18H21N3O5S
- rac-N-[(3R,4S)-4-(4-Methoxyphenyl)piperidin-3-yl]-4-nitrobenzene-1-sulfonamide2138556-20-2C18H21N3O5S
- rac-N-[(3R,4S)-4-(4-Methoxyphenyl)piperidin-3-yl]-2-nitrobenzene-1-sulfonamide2138078-36-9C18H21N3O5S
Frequently asked questions
What is the molar mass of C18H21N3O5S?
The molar mass of C18H21N3O5S is 391.44 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms, 5 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 391.1202 Da.
How many compounds have the formula C18H21N3O5S?
CompoundList lists 154 compounds with the molecular formula C18H21N3O5S, including 1-[(1-Cyanocyclohexyl)carbamoyl]ethyl 2-[(4-nitrophenyl)sulfanyl]acetate, 1-{[1-(2H-1,3-Benzodioxole-5-carbonyl)-3,5-dimethyl-1H-pyrazol-4-yl]sulfonyl}piperidine, N-(1,1-Dioxidotetrahydrothiophen-3-yl)-6,7-dimethoxy-1-methyl-1,4-dihydroindeno[1,2-c]pyrazole-3-carboxamide. 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 C18H21N3O5S?
C18H21N3O5S 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.