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 201 to 300 of 368 compounds
5-(((2,4-Dimethylphenyl)sulfonyl)methyl)-3-(p-tolyl)-1,2,4-oxadiazole
CAS 1105199-23-2C18H18N2O3S
(E)-N-(3-Methoxy-4-(2-oxopyrrolidin-1-yl)phenyl)-3-(thiophen-2-yl)acrylamide
CAS 1331400-43-1C18H18N2O3S
6-Ethoxy-N-(4-methyl-2-pyridinyl)-2-naphthalenesulfonamide
CAS 1087646-95-4C18H18N2O3S
N-(4-Methoxybenzyl)-3-(3-oxo-1,2-benzothiazol-2(3H)-yl)propanamide
CAS 1219581-30-2C18H18N2O3S
N-(2-Methoxybenzyl)-3-(3-oxo-1,2-benzothiazol-2(3H)-yl)propanamide
CAS 1219577-03-3C18H18N2O3S
(E)-N-(1-Methyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)-2-phenylethenesulfonamide
CAS 1331589-94-6C18H18N2O3S
![N-Cyclopropyl-2-(2-oxobenzo[d]oxazol-3(2H)-yl)-N-(2-(thiophen-2-yl)ethyl)acetamide chemical structure, C18H18N2O3S, CAS 1396714-78-5](/s/AVVDSLJRPTWGKQ-UHFFFAOYSA-N.svg)
N-Cyclopropyl-2-(2-oxobenzo[d]oxazol-3(2H)-yl)-N-(2-(thiophen-2-yl)ethyl)acetamide
CAS 1396714-78-5C18H18N2O3S
![3-(2-Oxo-2-(4-(thiophen-3-yl)piperidin-1-yl)ethyl)benzo[d]oxazol-2(3H)-one chemical structure, C18H18N2O3S, CAS 1396851-60-7](/s/QDABKRVQPQSSOD-UHFFFAOYSA-N.svg)
3-(2-Oxo-2-(4-(thiophen-3-yl)piperidin-1-yl)ethyl)benzo[d]oxazol-2(3H)-one
CAS 1396851-60-7C18H18N2O3S
(E)-2-(1-(3-(Thiophen-2-yl)acryloyl)azetidin-3-yl)-3a,4,7,7a-tetrahydro-1H-isoindole-1,3(2H)-dione
CAS 2035022-29-6C18H18N2O3S
![2-(Benzo[d]isoxazol-3-yl)-1-(7-(furan-2-yl)-1,4-thiazepan-4-yl)ethanone chemical structure, C18H18N2O3S, CAS 1705334-95-7](/s/BMEHPKOAEMHDMX-UHFFFAOYSA-N.svg)
2-(Benzo[d]isoxazol-3-yl)-1-(7-(furan-2-yl)-1,4-thiazepan-4-yl)ethanone
CAS 1705334-95-7C18H18N2O3S
![N-(2-(Benzo[b]thiophen-3-yl)-2-hydroxyethyl)-4,5,6,7-tetrahydrobenzo[d]isoxazole-3-carboxamide chemical structure, C18H18N2O3S, CAS 2034257-15-1](/s/GPKHNITZTPXBMA-UHFFFAOYSA-N.svg)
N-(2-(Benzo[b]thiophen-3-yl)-2-hydroxyethyl)-4,5,6,7-tetrahydrobenzo[d]isoxazole-3-carboxamide
CAS 2034257-15-1C18H18N2O3S
4-Cyano-N-((2-methoxy-2,3-dihydro-1H-inden-2-yl)methyl)benzenesulfonamide
CAS 2034445-88-8C18H18N2O3S
N-((5-(Furan-2-yl)pyridin-3-yl)methyl)-3,4-dimethylbenzenesulfonamide
CAS 2034538-25-3C18H18N2O3S
![N-[(4-Acetylphenyl)carbamothioyl]-4-ethoxybenzamide chemical structure, C18H18N2O3S, CAS 428827-02-5](/s/VIRVIGHHTMBGRL-UHFFFAOYSA-N.svg)
N-[(4-Acetylphenyl)carbamothioyl]-4-ethoxybenzamide
CAS 428827-02-5C18H18N2O3S
![(E)-N-(3,4-Dimethylbenzo[d]thiazol-2(3H)-ylidene)-2,4-dimethoxybenzamide chemical structure, C18H18N2O3S, CAS 865543-98-2](/s/ONBPOHPMZVDURS-UHFFFAOYSA-N.svg)
(E)-N-(3,4-Dimethylbenzo[d]thiazol-2(3H)-ylidene)-2,4-dimethoxybenzamide
CAS 865543-98-2C18H18N2O3S
![(E)-N-(3-Ethylbenzo[d]thiazol-2(3H)-ylidene)-3,5-dimethoxybenzamide chemical structure, C18H18N2O3S, CAS 865544-71-4](/s/JJDANKOTUWFLDK-UHFFFAOYSA-N.svg)
(E)-N-(3-Ethylbenzo[d]thiazol-2(3H)-ylidene)-3,5-dimethoxybenzamide
CAS 865544-71-4C18H18N2O3S
N-(3-Ethyl-4,7-dimethoxy-1,3-benzothiazol-2-ylidene)benzamide
CAS 1322229-58-2C18H18N2O3S
N-(4,7-Dimethoxy-3-methyl-1,3-benzothiazol-2-ylidene)-4-methylbenzamide
CAS 868368-87-0C18H18N2O3S
N-(4,7-Dimethoxy-3-methyl-1,3-benzothiazol-2-ylidene)-3-methylbenzamide
CAS 868368-88-1C18H18N2O3S
![(Z)-N-(4,7-Dimethoxy-3-methylbenzo[d]thiazol-2(3H)-ylidene)-2-methylbenzamide chemical structure, C18H18N2O3S, CAS 868370-39-2](/s/KFDQHGDOICFOFQ-UHFFFAOYSA-N.svg)
(Z)-N-(4,7-Dimethoxy-3-methylbenzo[d]thiazol-2(3H)-ylidene)-2-methylbenzamide
CAS 868370-39-2C18H18N2O3S
N-(4-Methoxy-3,7-dimethyl-1,3-benzothiazol-2-ylidene)-2-phenoxyacetamide
CAS 868370-90-5C18H18N2O3S
2-(2-Methoxyphenoxy)-N-(6-methyl-1,3-benzothiazol-2-yl)propanamide
CAS 830348-93-1C18H18N2O3S
1-(1,1-Dioxo-2,3-dihydrothiophen-3-yl)-1-(3-methylphenyl)-3-phenylurea
CAS 301305-51-1C18H18N2O3S
3-(3,4-Dimethylphenyl)-5-(3-methoxyanilino)-1,3-thiazolidine-2,4-dione
CAS 1038478-71-5C18H18N2O3S
- N-(4,5-Dimethyl-1,3-benzothiazol-2-yl)-2,4-dimethoxybenzamide888409-60-7C18H18N2O3S
- N-(3-Ethyl-4-methoxy-1,3-benzothiazol-2-ylidene)-4-methoxybenzamide864925-30-4C18H18N2O3S
- N-(4,5-Dimethyl-1,3-benzothiazol-2-yl)-2,6-dimethoxybenzamide888409-87-8C18H18N2O3S
- N-(4,5-Dimethyl-1,3-benzothiazol-2-yl)-3,5-dimethoxybenzamide940405-56-1C18H18N2O3S
- N-(5,7-Dimethyl-1,3-benzothiazol-2-yl)-3,5-dimethoxybenzamide912762-14-2C18H18N2O3S
- N-(5,7-Dimethylbenzo[d]thiazol-2-yl)-2,4-dimethoxybenzamide912762-43-7C18H18N2O3S
- 4-Ethoxy-N-(4-methoxy-7-methylbenzo[d]thiazol-2-yl)benzamide912771-03-0C18H18N2O3S
- N-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-2,3-dimethoxybenzamide895441-53-9C18H18N2O3S
- N-(4,5-Dimethyl-1,3-benzothiazol-2-yl)-2,3-dimethoxybenzamide895442-62-3C18H18N2O3S
- N-(4,7-Dimethyl-1,3-benzothiazol-2-yl)-2,3-dimethoxybenzamide895443-53-5C18H18N2O3S
- 5-[[4-[2-(3-Methyl-2-pyridinyl)ethoxy]phenyl] methyl]-2,4-thiazolidinedione105355-33-7C18H18N2O3S
- N-(2,5-Dimethylphenyl)-4-methyl-2-oxo-1,2-dihydroquinoline-6-sulfonamide899998-28-8C18H18N2O3S
- 4,8-Dimethyl-2-oxo-N-(o-tolyl)-1,2-dihydroquinoline-6-sulfonamide899998-71-1C18H18N2O3S
- 4-(3-((4-Methoxyphenyl)thio)propanoyl)-3,4-dihydroquinoxalin-2(1H)-one952812-72-5C18H18N2O3S
- 4-Isopropoxy-N-((5-(thiophen-2-yl)isoxazol-3-yl)methyl)benzamide946210-67-9C18H18N2O3S
- 2-(Methylthio)-N-((2-oxo-3-phenyloxazolidin-5-yl)methyl)benzamide954640-74-5C18H18N2O3S
- N-(1-(Cyclopropanecarbonyl)indolin-6-yl)benzenesulfonamide1040637-72-6C18H18N2O3S
- Methyl 1-[2-(methylsulfanyl)pyridine-3-carbonyl]-1,2,3,4-tetrahydroquinoline-5-carboxylate1111460-74-2C18H18N2O3S
- 2-[(2-Hydroxy-4,5-dihydro-3H-1-benzazepin-3-yl)sulfanyl]-N-(3-hydroxyphenyl)acetamide1010887-23-6C18H18N2O3S
- N-[2-(2-Methoxyphenyl)ethyl]-2-(3-oxo-1,2-benzothiazol-2(3H)-yl)acetamide1219580-79-6C18H18N2O3S
- 6-Ethoxy-N-(6-methylpyridin-2-yl)naphthalene-2-sulfonamide1206126-97-7C18H18N2O3S
- (2S)-1-[(E)-2-(4-Methylphenyl)ethenyl]sulfonyl-2,3-dihydroindole-2-carboxamide2094029-58-8C18H18N2O3S
- 7-Hydroxy-N-(4-isopropylphenyl)-4-methyl-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide1251556-15-6C18H18N2O3S
- 7-Hydroxy-N-(3-isopropylphenyl)-4-methyl-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide1251622-60-2C18H18N2O3S
- N-(2,5-Dimethylphenyl)-4-ethyl-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide1251595-79-5C18H18N2O3S
- N-(2,4-Dimethylphenyl)-4-ethyl-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide1251556-23-6C18H18N2O3S
- 4-Ethyl-N-(4-ethylphenyl)-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide1251572-16-3C18H18N2O3S
- Ethyl 4-amino-6-methyl-3-[3-(methyloxy)phenyl]thieno[2,3-b]pyridine-5-carboxylate1312594-17-4C18H18N2O3S
- (E)-Methyl 7-(3-(thiophen-2-yl)acrylamido)-3,4-dihydroisoquinoline-2(1H)-carboxylate1448140-71-3C18H18N2O3S
- 1-Methyl-1H-benzo[d]imidazol-5-yl 5,6,7,8-tetrahydronaphthalene-2-sulfonate1396877-78-3C18H18N2O3S
- 5-(Indoline-1-carbonyl)-4-(thiophen-2-ylmethyl)morpholin-3-one1421445-60-4C18H18N2O3S
- N-(Cyanomethyl)-4-ethyl-3-methanesulfonyl-N-phenylbenzamide1797695-13-6C18H18N2O3S
- 1-Benzyl-3-((5-(furan-2-yl(hydroxy)methyl)thiophen-2-yl)methyl)urea1795298-40-6C18H18N2O3S
- 1-((5-(Furan-2-yl(hydroxy)methyl)thiophen-2-yl)methyl)-3-(o-tolyl)urea1787916-79-3C18H18N2O3S
- N-(2-Methoxy-2-(2-methoxyphenyl)ethyl)benzo[d]thiazole-2-carboxamide1798543-44-8C18H18N2O3S
- 1'-(2,4-Dimethyl-1,3-thiazole-5-carbonyl)-3H-spiro[2-benzofuran-1,3'-piperidine]-3-one1704532-81-9C18H18N2O3S
- 3-Oxo-N-(thiophen-2-ylmethyl)-3H-spiro[isobenzofuran-1,3'-piperidine]-1'-carboxamide1705743-56-1C18H18N2O3S
- N-((6-(Furan-2-yl)pyridin-3-yl)methyl)-2,5-dimethylbenzenesulfonamide2034475-74-4C18H18N2O3S
- 4-Cyano-N-(isochroman-3-ylmethyl)-N-methylbenzenesulfonamide2034395-54-3C18H18N2O3S
- 1-(2-(Benzo[b]thiophen-3-yl)-2-hydroxyethyl)-3-(2-methoxyphenyl)urea2034257-84-4C18H18N2O3S
- 1-(2-(Furan-2-yl)-2-hydroxy-2-(thiophen-2-yl)ethyl)-3-(o-tolyl)urea2034633-48-0C18H18N2O3S
- N-(2-(4-Methoxy-6-methyl-2-oxopyridin-1(2H)-yl)ethyl)benzo[b]thiophene-2-carboxamide2034246-69-8C18H18N2O3S
- N-((6-(Furan-2-yl)pyridin-3-yl)methyl)-1-(m-tolyl)methanesulfonamide1903145-85-6C18H18N2O3S
- 1-Benzyl-3-(2-(furan-2-yl)-2-hydroxy-2-(thiophen-2-yl)ethyl)urea1903244-15-4C18H18N2O3S
- 2-(Benzylthio)-N-(2-(7-oxofuro[2,3-c]pyridin-6(7H)-yl)ethyl)acetamide2034413-66-4C18H18N2O3S
- 2-(Ethylthio)-N-(2-(7-oxofuro[2,3-c]pyridin-6(7H)-yl)ethyl)benzamide2034323-11-8C18H18N2O3S
- 1-(4-Ethoxyphenyl)-3-((5-(thiophen-2-yl)furan-2-yl)methyl)urea2034562-85-9C18H18N2O3S
- N-(2-(5-(Furan-3-yl)thiophen-2-yl)ethyl)-4,5,6,7-tetrahydrobenzo[d]isoxazole-3-carboxamide2034255-52-0C18H18N2O3S
- N-(2-(7-Oxofuro[2,3-c]pyridin-6(7H)-yl)ethyl)-3-(phenylthio)propanamide2034414-09-8C18H18N2O3S
- 4-Ethyl-N-((6-(furan-3-yl)pyridin-3-yl)methyl)benzenesulfonamide2034466-20-9C18H18N2O3S
- N-((6-(Furan-3-yl)pyridin-3-yl)methyl)-1-(m-tolyl)methanesulfonamide2034333-26-9C18H18N2O3S
- N-((5-(Furan-3-yl)pyridin-3-yl)methyl)-1-(m-tolyl)methanesulfonamide2034430-25-4C18H18N2O3S
- 2-((1H-Indol-3-yl)sulfinyl)-N-(4-ethoxyphenyl)acetamide2034455-08-6C18H18N2O3S
- 2-(2-Oxobenzo[d]oxazol-3(2H)-yl)-N-(1-(thiophen-2-yl)cyclopentyl)acetamide2034506-59-5C18H18N2O3S
- 1-Benzyl-3-(2-(furan-2-yl)-2-hydroxy-2-(thiophen-3-yl)ethyl)urea2034633-23-1C18H18N2O3S
- 1-Benzyl-3-(2-(furan-3-yl)-2-hydroxy-2-(thiophen-2-yl)ethyl)urea2034337-32-9C18H18N2O3S
- 1-(2-(Furan-3-yl)-2-hydroxy-2-(thiophen-2-yl)ethyl)-3-(o-tolyl)urea2034634-82-5C18H18N2O3S
- 1-(2-Phenoxyethyl)-3-((5-(thiophen-3-yl)furan-2-yl)methyl)urea2034254-72-1C18H18N2O3S
- N-((5-(Furan-2-yl)pyridin-3-yl)methyl)-2-phenylethanesulfonamide2310143-78-1C18H18N2O3S
- 4-Ethyl-N-((5-(furan-3-yl)pyridin-3-yl)methyl)benzenesulfonamide2034394-10-8C18H18N2O3S
- 2-(2,5-Dimethylphenyl)-1,1-dioxo-4-prop-2-enyl-1lambda6,2,4-benzothiadiazin-3-one2549029-75-4C18H18N2O3S
- 2-(4-Ethylphenyl)-1,1-dioxo-4-prop-2-enyl-1lambda6,2,4-benzothiadiazin-3-one2549013-99-0C18H18N2O3S
- (E)-N-[(2,5-Dimethoxyphenyl)carbamothioyl]-3-phenylprop-2-enamide6144-05-4C18H18N2O3S
- (E)-N-[(2,4-Dimethoxyphenyl)carbamothioyl]-3-phenylprop-2-enamide364620-29-1C18H18N2O3S
- 4-[[4-(3,4-Dimethoxyphenyl)-1,3-thiazol-2-yl]-methylamino]phenol708996-89-8C18H18N2O3S
- N-(2,5-Dimethoxyphenyl)-2-(1H-indol-3-ylsulfanyl)acetamide862825-87-4C18H18N2O3S
- Ethyl 5-phenyl-2-{2-[(prop-2-yn-1-yl)amino]acetamido}thiophene-3-carboxylate853590-61-1C18H18N2O3S
- N-(4-Ethyl-1,3-benzothiazol-2-yl)-3,5-dimethoxybenzamide892854-85-2C18H18N2O3S
- N-(5,7-Dimethyl-1,3-benzothiazol-2-yl)-2,3-dimethoxybenzamide895443-68-2C18H18N2O3S
- 4,8-Dimethyl-2-oxo-N-(p-tolyl)-1,2-dihydroquinoline-6-sulfonamide899998-75-5C18H18N2O3S
- (E)-2-Phenyl-N-(2-propan-2-yl-1,3-benzoxazol-5-yl)ethenesulfonamide1181478-24-9C18H18N2O3S
- N-Cyclopropyl-3-(2-phenylethenesulfonamido)benzamide1090386-13-2C18H18N2O3S
- Ethyl 8-methyl-2-oxo-4-((thiophen-2-ylmethyl)amino)-1,2-dihydroquinoline-3-carboxylate1251672-63-5C18H18N2O3S
- 2-[(E)-2-Phenylethenyl]sulfonyl-3,4-dihydro-1H-isoquinoline-1-carboxamide1311998-85-2C18H18N2O3S
- 1-[(E)-2-(4-Methylphenyl)ethenyl]sulfonyl-2,3-dihydroindole-3-carboxamide1311996-48-1C18H18N2O3S
- 4-Methoxy-N-methyl-N-phenyl-3-(1H-pyrrol-2-yl)benzenesulfonamide170287-71-5C18H18N2O3S
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 5-(((2,4-Dimethylphenyl)sulfonyl)methyl)-3-(p-tolyl)-1,2,4-oxadiazole, (E)-N-(3-Methoxy-4-(2-oxopyrrolidin-1-yl)phenyl)-3-(thiophen-2-yl)acrylamide, 6-Ethoxy-N-(4-methyl-2-pyridinyl)-2-naphthalenesulfonamide. 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.