Molecular formula
C18H18N2O5S
163 compounds have this formula on CompoundList.
- Molar mass
- 374.41g/mol
- Monoisotopic mass
- 374.0936Da
- Atoms
- 44
- Elements
- 5
- Rings plus double bonds
- 11
The formula C18H18N2O5S describes a molecule made of 18 carbon atoms, 18 hydrogen atoms, 2 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 × 1857.74%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 184.85%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 27.48%14.007 × 2 = 28.014 g/mol
- O Oxygen × 521.37%15.999 × 5 = 79.995 g/mol
- S Sulfur × 18.56%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C18H18N2O5S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 163 compounds
Cyprosulfamide
CAS 221667-31-8C18H18N2O5S
5-(4-Ethyl-5-hydroxy-3-methyl-1H-pyrazol-1-yl)-2-phenoxybenzenesulfonic acid
CAS 321143-17-3C18H18N2O5S
![2-(1,1-Dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)-N-[2-(4-methoxyphenyl)ethyl]acetamide chemical structure, C18H18N2O5S, CAS 503284-78-4](/s/YJPISASGKOPWNK-UHFFFAOYSA-N.svg)
2-(1,1-Dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)-N-[2-(4-methoxyphenyl)ethyl]acetamide
CAS 503284-78-4C18H18N2O5S
![N-[4-(Pyrrolidine-1-sulfonyl)-phenyl]-phthalamic acid chemical structure, C18H18N2O5S, CAS 349626-86-4](/s/HFYPVJXWZFFJPG-UHFFFAOYSA-N.svg)
N-[4-(Pyrrolidine-1-sulfonyl)-phenyl]-phthalamic acid
CAS 349626-86-4C18H18N2O5S
![N-(1,3-Benzodioxol-5-yl)-4-[methylsulfonyl(prop-2-enyl)amino]benzamide chemical structure, C18H18N2O5S, CAS 831232-95-2](/s/ZMJCVJDNQJCQQG-UHFFFAOYSA-N.svg)
N-(1,3-Benzodioxol-5-yl)-4-[methylsulfonyl(prop-2-enyl)amino]benzamide
CAS 831232-95-2C18H18N2O5S
![N-[1-(2,3-Dihydro-1,4-benzodioxin-6-yl)-5-oxopyrrolidin-3-yl]benzenesulfonamide chemical structure, C18H18N2O5S, CAS 905688-23-5](/s/JHSMZFWFBBVUDZ-UHFFFAOYSA-N.svg)
N-[1-(2,3-Dihydro-1,4-benzodioxin-6-yl)-5-oxopyrrolidin-3-yl]benzenesulfonamide
CAS 905688-23-5C18H18N2O5S
1-(1,3-Benzodioxol-5-ylcarbonyl)-4-(phenylsulfonyl)piperazine
CAS 775299-35-9C18H18N2O5S
![3-(Dimethylamino)-1-{4-nitro-3-[(phenylsulfonyl)methyl]phenyl}-2-propen-1-one chemical structure, C18H18N2O5S, CAS 339276-52-7](/s/DIJPXGOFUIRCEZ-ZHACJKMWSA-N.svg)
3-(Dimethylamino)-1-{4-nitro-3-[(phenylsulfonyl)methyl]phenyl}-2-propen-1-one
CAS 339276-52-7C18H18N2O5S
![2,5-Dimethoxy-N-[(3-phenyl-5-isoxazolyl)methyl]benzenesulfonamide chemical structure, C18H18N2O5S, CAS 339016-95-4](/s/ZQBYMXVAIVCLRF-UHFFFAOYSA-N.svg)
2,5-Dimethoxy-N-[(3-phenyl-5-isoxazolyl)methyl]benzenesulfonamide
CAS 339016-95-4C18H18N2O5S
![Methyl 6-[4-(methoxycarbonyl)phenyl]-8-methyl-4-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-7-carboxylate chemical structure, C18H18N2O5S, CAS 608491-59-4](/s/KQWOSVVTANEMMP-UHFFFAOYSA-N.svg)
Methyl 6-[4-(methoxycarbonyl)phenyl]-8-methyl-4-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-7-carboxylate
CAS 608491-59-4C18H18N2O5S
N-(1,3-Benzodioxol-5-yl)-4-(pyrrolidin-1-ylsulfonyl)benzamide
CAS 486400-95-7C18H18N2O5S
![N-[2-(2-Methoxyphenyl)ethyl]-2-(1,1,3-trioxo-2,3-dihydro-1lambda6,2-benzothiazol-2-yl)acetamide chemical structure, C18H18N2O5S, CAS 899954-17-7](/s/KHKBJYDLTKPWMZ-UHFFFAOYSA-N.svg)
N-[2-(2-Methoxyphenyl)ethyl]-2-(1,1,3-trioxo-2,3-dihydro-1lambda6,2-benzothiazol-2-yl)acetamide
CAS 899954-17-7C18H18N2O5S
![Methyl 5-[4-(methoxycarbonyl)phenyl]-2,7-dimethyl-3-oxo-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate chemical structure, C18H18N2O5S, CAS 840461-44-1](/s/FQBBBKJBCNNLRB-UHFFFAOYSA-N.svg)
Methyl 5-[4-(methoxycarbonyl)phenyl]-2,7-dimethyl-3-oxo-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate
CAS 840461-44-1C18H18N2O5S
![3-(1,1-Dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)-N-(4-methoxybenzyl)propanamide chemical structure, C18H18N2O5S, CAS 899995-93-8](/s/PTRAPJAVSQARRN-UHFFFAOYSA-N.svg)
3-(1,1-Dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)-N-(4-methoxybenzyl)propanamide
CAS 899995-93-8C18H18N2O5S
![(5-Oxo-[1,3]thiazolo[3,2-a]pyrimidin-7-yl)methyl 3-methoxy-4-propan-2-yloxybenzoate chemical structure, C18H18N2O5S, CAS 876935-93-2](/s/SEIKEKXQIYWOKH-UHFFFAOYSA-N.svg)
(5-Oxo-[1,3]thiazolo[3,2-a]pyrimidin-7-yl)methyl 3-methoxy-4-propan-2-yloxybenzoate
CAS 876935-93-2C18H18N2O5S
N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-4-(2-oxopyrrolidin-1-yl)benzenesulfonamide
CAS 632294-02-1C18H18N2O5S
![{2-[2-(4-Methoxy-benzenesulfonyl)-ethyl]-benzoimidazol-1-yl}-acetic acid chemical structure, C18H18N2O5S, CAS 429654-05-7](/s/UBWQOFJFCGNGKT-UHFFFAOYSA-N.svg)
{2-[2-(4-Methoxy-benzenesulfonyl)-ethyl]-benzoimidazol-1-yl}-acetic acid
CAS 429654-05-7C18H18N2O5S
![(Z)-Ethyl 2-((furan-2-carbonyl)imino)-3-(2-methoxyethyl)-2,3-dihydrobenzo[d]thiazole-6-carboxylate chemical structure, C18H18N2O5S, CAS 1164498-63-8](/s/PTOWRAOAPSZNLK-UHFFFAOYSA-N.svg)
(Z)-Ethyl 2-((furan-2-carbonyl)imino)-3-(2-methoxyethyl)-2,3-dihydrobenzo[d]thiazole-6-carboxylate
CAS 1164498-63-8C18H18N2O5S
N'-(2-Methoxy-4-methylsulfanylbenzoyl)-2,3-dihydro-1,4-benzodioxine-3-carbohydrazide
CAS 771499-04-8C18H18N2O5S
![(3-Methyl-5-oxo-[1,3]thiazolo[3,2-a]pyrimidin-7-yl)methyl 3-ethoxy-4-methoxybenzoate chemical structure, C18H18N2O5S, CAS 876701-48-3](/s/TWTINIPXTAXCJQ-UHFFFAOYSA-N.svg)
(3-Methyl-5-oxo-[1,3]thiazolo[3,2-a]pyrimidin-7-yl)methyl 3-ethoxy-4-methoxybenzoate
CAS 876701-48-3C18H18N2O5S
![2-(1,1-Dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)-N-(2-ethoxyphenyl)propanamide chemical structure, C18H18N2O5S, CAS 899955-29-4](/s/YVPNVEZUQWKJOB-UHFFFAOYSA-N.svg)
2-(1,1-Dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)-N-(2-ethoxyphenyl)propanamide
CAS 899955-29-4C18H18N2O5S
![2-(1,1-Dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)-N-(4-ethoxyphenyl)propanamide chemical structure, C18H18N2O5S, CAS 899996-67-9](/s/XLCIUVCCYYJFJL-UHFFFAOYSA-N.svg)
2-(1,1-Dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)-N-(4-ethoxyphenyl)propanamide
CAS 899996-67-9C18H18N2O5S
N-1,3-Benzodioxol-5-yl-3-(1-pyrrolidinylsulfonyl)benzamide
CAS 637325-50-9C18H18N2O5S
![(2E)-3-(1,3-Benzodioxol-5-yl)-N-[2-(4-sulfamoylphenyl)ethyl]prop-2-enamide chemical structure, C18H18N2O5S, CAS 349541-52-2](/s/AVWMVWCJIGRRJD-XBXARRHUSA-N.svg)
(2E)-3-(1,3-Benzodioxol-5-yl)-N-[2-(4-sulfamoylphenyl)ethyl]prop-2-enamide
CAS 349541-52-2C18H18N2O5S
- 3-[(4-Benzoylpiperazin-1-yl)sulfonyl]benzoic acid447411-92-9C18H18N2O5S
- 1-[(2,3-Dihydro-1,4-benzodioxin-6-yl)carbamoyl]ethyl 2-(methylsulfanyl)pyridine-3-carboxylate848276-96-0C18H18N2O5S
- 3,4,5-Trimethoxy-N-(6-methoxy-1,3-benzothiazol-2-yl)benzamide301674-87-3C18H18N2O5S
- 4-Hydroxy-1-[2-(2-hydroxyethoxy)ethyl]-2-pyridin-2-yl-3-(thiophene-2-carbonyl)-2H-pyrrol-5-one577997-28-5C18H18N2O5S
- 1-[4-({[(4-Methoxyphenyl)methyl]amino}sulfonyl)phenyl]azolidine-2,5-dione919623-30-6C18H18N2O5S
- 3-(1-(4-Methoxybenzenesulfonyl)-2,3-dihydro-1H-indol-5-yl)-N-hydroxyacrylamide1338320-95-8C18H18N2O5S
- Ethyl 4-cyano-5-(2,4-dimethoxybenzamido)-3-methylthiophene-2-carboxylate545344-28-3C18H18N2O5S
- [2-(3,4-Dimethoxyphenyl)-1,3-thiazolidin-3-yl]-(4-nitrophenyl)methanone314045-50-6C18H18N2O5S
- 4-(Benzenesulfonyl)-2-(furan-2-yl)-N-(oxolan-2-ylmethyl)-1,3-oxazol-5-amine720673-15-4C18H18N2O5S
- Ethyl 2-(2-nitrobenzamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate312917-26-3C18H18N2O5S
- Ethyl 4-cyano-5-(3,4-dimethoxybenzamido)-3-methylthiophene-2-carboxylate354994-86-8C18H18N2O5S
- 1-(3,4-Dimethoxyphenyl)-2-((5-(2,5-dimethylfuran-3-yl)-1,3,4-oxadiazol-2-yl)thio)ethanone1021059-13-1C18H18N2O5S
- 3,4,5-Trimethoxy-N-[4-(5-methylfuran-2-yl)-1,3-thiazol-2-yl]benzamide476642-54-3C18H18N2O5S
- Acetyldehydro-3-(2-thienyl)alanyltyrosine68762-78-7C18H18N2O5S
- 3-(1,1-Dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)-N-(2-methoxybenzyl)propanamide899954-52-0C18H18N2O5S
- Alanine, 3-(p-hydroxyphenyl)-N-(p-tolylsulfonyl)-, cyanomethyl ester, L-64187-18-4C18H18N2O5S
- 5-(((2,5-Dimethoxyphenyl)sulfonyl)methyl)-3-(p-tolyl)-1,2,4-oxadiazole1105221-47-3C18H18N2O5S
- 5-(((3,4-Dimethoxyphenyl)sulfonyl)methyl)-3-(p-tolyl)-1,2,4-oxadiazole1105206-25-4C18H18N2O5S
- N-(1-Ethyl-2-oxoindolin-5-yl)-2,3-dihydrobenzo[b][1,4]dioxine-6-sulfonamide921786-75-6C18H18N2O5S
- N-[4-(1,1-Dioxothiazinan-2-yl)phenyl]-1,3-benzodioxole-5-carboxamide899731-81-8C18H18N2O5S
- 4-(3-((4-Methoxyphenyl)sulfonyl)propanoyl)-3,4-dihydroquinoxalin-2(1H)-one941890-09-1C18H18N2O5S
- N-(1-Acetylindolin-6-yl)-2,3-dihydrobenzo[b][1,4]dioxine-6-sulfonamide1021259-15-3C18H18N2O5S
- 5-(((3,4-Dimethoxyphenyl)sulfonyl)methyl)-3-(o-tolyl)-1,2,4-oxadiazole1105234-36-3C18H18N2O5S
- N-(4,7-Dimethoxy-1,3-benzothiazol-2-yl)-2,3-dimethoxybenzamide895443-61-5C18H18N2O5S
- 3-(3,4-Dimethoxyphenyl)-5-(tosylmethyl)-1,2,4-oxadiazole1105224-26-7C18H18N2O5S
- Ethyl 2-(4-nitrobenzamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate72625-08-2C18H18N2O5S
- {[(1-Acetyl-2,3-dihydro-1H-indol-5-yl)sulfonyl]-amino}(phenyl)acetic acid1028067-91-5C18H18N2O5S
- 1-(Phenylsulfonyl)-2-(3,4,5-trimethoxyphenyl)-1H-imidazole1253697-53-8C18H18N2O5S
- Methyl 6-(4-acetyloxyphenyl)-8-methyl-4-oxo-3,6-dihydro-2H-pyrimido[2,1-b][1,3]thiazine-7-carboxylate324543-33-1C18H18N2O5S
- 2-{[(2-Oxo-1,2,3,4-tetrahydroquinolin-6-yl)-sulfonyl]amino}-3-phenylpropanoic acid1396963-54-4C18H18N2O5S
- Ethyl 4-cyano-5-{[(4-methoxyphenoxy)acetyl]amino}-3-methylthiophene-2-carboxylate443121-93-5C18H18N2O5S
- Ethyl 2-[(Z)-(4-hydroxy-3-nitrophenyl)methyleneamino]-1-thia-4,5,6,7-tetrahydro-3-indenecarboxylateC18H18N2O5S
- Methyl 2-[3-(furan-2-ylmethyl)-2,4-dioxo-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d]pyrimidin-1-yl]acetate824955-78-4C18H18N2O5S
- 2-Methoxy-5-[5-(3,4,5-trimethoxyphenyl)-1,2,3-thiadiazol-4-yl]phenol916165-29-2C18H18N2O5S
- Ethyl 2-[(2-methyl-3-nitrobenzoyl)amino]-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate544688-72-4C18H18N2O5S
- 4-(2-(Furan-2-yl)-4-tosyloxazol-5-yl)morpholine303753-65-3C18H18N2O5S
- 3-[(3,5-Dimethoxybenzoyl)carbamothioylamino]-2-methylbenzoic acid434307-35-4C18H18N2O5S
- 3-(1,1-Dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)-N-(4-ethoxyphenyl)propanamide663168-42-1C18H18N2O5S
- 2,4-Imidazolidinedione, 3-(2-((methylsulfonyl)oxy)ethyl)-5,5-diphenyl-34806-23-0C18H18N2O5S
- Ethyl 2-({4-nitro-3-methylbenzoyl}amino)-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate420091-19-6C18H18N2O5S
- Methyl 2-({[(3,4-dimethoxybenzoyl)amino]carbothioyl}amino)benzoate428450-89-9C18H18N2O5S
- N-(4-Pyrrolidin-1-ylsulfonylphenyl)-1,3-benzodioxole-5-carboxamide510736-13-7C18H18N2O5S
- Methyl 4-ethyl-2-[(3-{4-nitrophenyl}acryloyl)amino]-5-methyl-3-thiophenecarboxylate560075-96-9C18H18N2O5S
- Ethyl 5-ethyl-2-{[(2-oxo-1,3-benzoxazol-3(2H)-yl)acetyl]amino}thiophene-3-carboxylate663168-14-7C18H18N2O5S
- (2E)-4-({4-[(2,6-Dimethylphenyl)sulfamoyl]phenyl}amino)-4-oxobut-2-enoic acid875029-68-8C18H18N2O5S
- 1-((2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)sulfonyl)-N-methylindoline-2-carboxamide1100792-12-8C18H18N2O5S
- Methyl 2-{[(2,2-dimethyl-5-oxotetrahydro-3-furanyl)carbonyl]amino}-5-phenyl-1,3-thiazole-4-carboxylate1574252-33-7C18H18N2O5S
- 3-({[(3,4-Dimethoxyphenyl)carbonyl]carbamothioyl}amino)-4-methylbenzoic acid433956-60-6C18H18N2O5S
- Benzenesulfonamide, 4-(2,5-dioxo-3-(2-methoxyphenyl)-3-methyl-1-pyrrolidinyl)-65116-69-0C18H18N2O5S
- 3,4,5-Trimethoxy-N-(4-methoxy-1,3-benzothiazol-2-yl)benzamide391218-23-8C18H18N2O5S
- 2-(1,3-Benzodioxol-5-yloxy)-N-(5,5-dimethyl-7-oxo-4,6-dihydro-1,3-benzothiazol-2-yl)acetamide878729-11-4C18H18N2O5S
- 4-[5-(2-Hydroxy-3-methoxyphenyl)-3-(thiophen-2-yl)-4,5-dihydro-1H-pyrazol-1-yl]-4-oxobutanoic acid871318-98-8C18H18N2O5S
- N-[3-(2-Oxopyrrolidin-1-yl)phenyl]-2,3-dihydro-1,4-benzodioxine-6-sulfonamide941872-03-3C18H18N2O5S
- N-(Benzo[d][1,3]dioxol-5-yl)-4-(N-cyclopropyl-N-methylsulfamoyl)benzamide923482-17-1C18H18N2O5S
- Methyl 2-({[(3,5-dimethoxyphenyl)carbonyl]carbamothioyl}amino)benzoate429644-26-8C18H18N2O5S
- Methyl 4-({[(3,5-dimethoxyphenyl)carbonyl]carbamothioyl}amino)benzoate429656-71-3C18H18N2O5S
- Propyl 2-[(3-nitrobenzoyl)amino]-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate444926-14-1C18H18N2O5S
- Ethyl 4-{[(1-methyl-2-oxo-2,3-dihydro-1H-indol-5-yl)sulfonyl]amino}benzoate878423-72-4C18H18N2O5S
- (Z)-Ethyl 3-allyl-2-((5,6-dihydro-1,4-dioxine-2-carbonyl)imino)-2,3-dihydrobenzo[d]thiazole-6-carboxylate865174-84-1C18H18N2O5S
- N-(5,6-Dimethoxy-1,3-benzothiazol-2-yl)-2,3-dimethoxybenzamide895443-74-0C18H18N2O5S
- 2-(1,1-Dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)-N-(2-methoxy-5-methylphenyl)propanamide899955-54-5C18H18N2O5S
- N-(2-Methoxyphenyl)-3-(4-methyl-1,1,3-trioxo-1lambda6,2-thiazolidin-2-yl)benzamide919633-94-6C18H18N2O5S
- Methyl 3-{4-ethyl-4H,5H,6H,7H-thieno[3,2-c]pyridine-5-carbonyl}-5-nitrobenzoate1147531-59-6C18H18N2O5S
- Methyl 3-{[({4-nitrobenzyl}sulfanyl)acetyl]amino}-4-methylbenzoate432508-63-9C18H18N2O5S
- Methyl 4,5-dimethoxy-2-{[(phenylcarbonyl)carbamothioyl]amino}benzoate135509-75-0C18H18N2O5S
- Methyl 4-({[(3,4-dimethoxyphenyl)carbonyl]carbamothioyl}amino)benzoate347339-62-2C18H18N2O5S
- Carbamic acid, methyl((4-nitrophenyl)thio)-, 2,3-dihydro-2,2-dimethyl-7-benzofuranyl ester50802-70-5C18H18N2O5S
- (E)-4-[4-[(3,5-Dimethylphenyl)sulfamoyl]anilino]-4-oxobut-2-enoic acid468101-36-2C18H18N2O5S
- (E)-4-[4-[(2,4-Dimethylphenyl)sulfamoyl]anilino]-4-oxobut-2-enoic acid468099-22-1C18H18N2O5S
- 3-(1,1-Dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)-N-(2-ethoxyphenyl)propanamide899996-09-9C18H18N2O5S
- 3-(1,1-Dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)-N-(2-methoxy-5-methylphenyl)propanamide899954-84-8C18H18N2O5S
- N-(5-(1,1-Dioxidoisothiazolidin-2-yl)-2-methylphenyl)benzo[d][1,3]dioxole-5-carboxamide946343-78-8C18H18N2O5S
- N-[4-(2-Oxopyrrolidin-1-yl)phenyl]-2,3-dihydro-1,4-benzodioxine-6-sulfonamide931010-68-3C18H18N2O5S
- N-(1-Methylsulfonyl-3,4-dihydro-2H-quinolin-6-yl)-1,3-benzodioxole-5-carboxamide941972-04-9C18H18N2O5S
- N-(1,3-Benzodioxol-5-yl)-4-(1,1-dioxothiazinan-2-yl)benzamide899952-78-4C18H18N2O5S
- 1-(4-{[(4-Ethoxyphenyl)amino]sulfonyl}phenyl)azolidine-2,5-dione904051-99-6C18H18N2O5S
Frequently asked questions
What is the molar mass of C18H18N2O5S?
The molar mass of C18H18N2O5S is 374.41 g/mol, calculated from standard atomic weights for 18 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms, 5 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 374.0936 Da.
How many compounds have the formula C18H18N2O5S?
CompoundList lists 163 compounds with the molecular formula C18H18N2O5S, including Cyprosulfamide, 5-(4-Ethyl-5-hydroxy-3-methyl-1H-pyrazol-1-yl)-2-phenoxybenzenesulfonic acid, 2-(1,1-Dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)-N-[2-(4-methoxyphenyl)ethyl]acetamide. 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 C18H18N2O5S?
C18H18N2O5S 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.