Molecular formula
C18H23N3O3S
213 compounds have this formula on CompoundList.
- Molar mass
- 361.46g/mol
- Monoisotopic mass
- 361.1460Da
- Atoms
- 48
- Elements
- 5
- Rings plus double bonds
- 9
The formula C18H23N3O3S describes a molecule made of 18 carbon atoms, 23 hydrogen atoms, 3 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 × 1859.81%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 236.41%1.008 × 23 = 23.184 g/mol
- N Nitrogen × 311.63%14.007 × 3 = 42.021 g/mol
- O Oxygen × 313.28%15.999 × 3 = 47.997 g/mol
- S Sulfur × 18.87%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C18H23N3O3S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 213 compounds
3-Amino-N-(4-methoxyphenyl)-4-(piperidin-1-yl)benzene-1-sulfonamide
CAS 326092-19-7C18H23N3O3S
5-Amino-N-(4-methoxyphenyl)-2-(piperidin-1-yl)benzene-1-sulfonamide
CAS 326034-12-2C18H23N3O3S
![1-Amino-5-(4-morpholinyl)-6,7,8,9-tetrahydrothieno[2,3-c]isoquinoline-2-carboxylic acid ethyl ester chemical structure, C18H23N3O3S, CAS 54585-49-8](/s/CPLHVPAYUQAHAW-UHFFFAOYSA-N.svg)
1-Amino-5-(4-morpholinyl)-6,7,8,9-tetrahydrothieno[2,3-c]isoquinoline-2-carboxylic acid ethyl ester
CAS 54585-49-8C18H23N3O3S
Antazoline mesylate
CAS 3131-32-6C18H23N3O3S
![N-[2-(3,4-Dimethoxyphenyl)ethyl]-2-(4,6-dimethylpyrimidin-2-yl)sulfanylacetamide chemical structure, C18H23N3O3S, CAS 354785-95-8](/s/WHEGHGMHQNRWTG-UHFFFAOYSA-N.svg)
N-[2-(3,4-Dimethoxyphenyl)ethyl]-2-(4,6-dimethylpyrimidin-2-yl)sulfanylacetamide
CAS 354785-95-8C18H23N3O3S
5-Amino-N-(2-methoxy-phenyl)-2-piperidin-1-yl-benzenesulfonamide
CAS 326022-99-5C18H23N3O3S
![2-Ethyl-N-[2-(4-methoxyphenyl)-5-oxo-4,6-dihydrothieno[3,4-c]pyrazol-3-yl]butanamide chemical structure, C18H23N3O3S, CAS 958587-33-2](/s/YHZYGEIZGXDDAN-UHFFFAOYSA-N.svg)
2-Ethyl-N-[2-(4-methoxyphenyl)-5-oxo-4,6-dihydrothieno[3,4-c]pyrazol-3-yl]butanamide
CAS 958587-33-2C18H23N3O3S
![N-Cyclopentyl-2-[1-(2,4-dimethoxyphenyl)imidazol-2-yl]sulfanylacetamide chemical structure, C18H23N3O3S, CAS 869345-51-7](/s/ONPMBKPVSXELBP-UHFFFAOYSA-N.svg)
N-Cyclopentyl-2-[1-(2,4-dimethoxyphenyl)imidazol-2-yl]sulfanylacetamide
CAS 869345-51-7C18H23N3O3S
![2-[N-(Dimethylsulfamoyl)anilino]-N-(4-ethylphenyl)acetamide chemical structure, C18H23N3O3S, CAS 824974-52-9](/s/FWUXGHDSUCMRBM-UHFFFAOYSA-N.svg)
2-[N-(Dimethylsulfamoyl)anilino]-N-(4-ethylphenyl)acetamide
CAS 824974-52-9C18H23N3O3S
![N-(2-tert-Butyl-5-oxo-4,6-dihydrothieno[3,4-c]pyrazol-3-yl)-2-(4-methoxyphenyl)acetamide chemical structure, C18H23N3O3S, CAS 958716-70-6](/s/HXBGQXWIZZFVDM-UHFFFAOYSA-N.svg)
N-(2-tert-Butyl-5-oxo-4,6-dihydrothieno[3,4-c]pyrazol-3-yl)-2-(4-methoxyphenyl)acetamide
CAS 958716-70-6C18H23N3O3S
![tert-Butyl 2-[(6-methyl-1,3-benzothiazol-2-yl)carbamoyl]pyrrolidine-1-carboxylate chemical structure, C18H23N3O3S, CAS 5920-21-8](/s/OOXGPUOQOTWUAC-UHFFFAOYSA-N.svg)
tert-Butyl 2-[(6-methyl-1,3-benzothiazol-2-yl)carbamoyl]pyrrolidine-1-carboxylate
CAS 5920-21-8C18H23N3O3S
![1-(3,4-Dimethylphenyl)sulfonyl-2-[2-(4-methoxyphenyl)ethyl]guanidine chemical structure, C18H23N3O3S, CAS 869075-37-6](/s/QGMLXIZMSNBTJG-UHFFFAOYSA-N.svg)
1-(3,4-Dimethylphenyl)sulfonyl-2-[2-(4-methoxyphenyl)ethyl]guanidine
CAS 869075-37-6C18H23N3O3S
![1-({[5-(2-Methoxyphenyl)-1,3,4-oxadiazol-2-yl]thio}acetyl)-3,5-dimethylpiperidine chemical structure, C18H23N3O3S, CAS 850936-92-4](/s/TXUAHRYSNNTKER-UHFFFAOYSA-N.svg)
1-({[5-(2-Methoxyphenyl)-1,3,4-oxadiazol-2-yl]thio}acetyl)-3,5-dimethylpiperidine
CAS 850936-92-4C18H23N3O3S
![1-(3,4-Dimethylphenyl)sulfonyl-2-[2-(2-methoxyphenyl)ethyl]guanidine chemical structure, C18H23N3O3S, CAS 869075-55-8](/s/GCJLPPSGUBWAKG-UHFFFAOYSA-N.svg)
1-(3,4-Dimethylphenyl)sulfonyl-2-[2-(2-methoxyphenyl)ethyl]guanidine
CAS 869075-55-8C18H23N3O3S
N-(2,4-Dimethoxyphenyl)-4-(furan-2-ylmethyl)piperazine-1-carbothioamide
CAS 701952-38-7C18H23N3O3S
![N-Methyl-1-(3,4,5-trimethoxyphenyl)-3,4-dihydropyrrolo[1,2-a]pyrazine-2(1H)-carbothioamide chemical structure, C18H23N3O3S, CAS 393833-43-7](/s/IGFBWFFTNDLKNQ-UHFFFAOYSA-N.svg)
N-Methyl-1-(3,4,5-trimethoxyphenyl)-3,4-dihydropyrrolo[1,2-a]pyrazine-2(1H)-carbothioamide
CAS 393833-43-7C18H23N3O3S
(3,5-Dimethylpyrazol-1-yl)-(4-methyl-3-piperidin-1-ylsulfonylphenyl)methanone
CAS 956358-70-6C18H23N3O3S
![Ethyl 1-{[2-(4-aminophenoxy)-1,3-thiazol-5-yl]methyl}-4-piperidinecarboxylate chemical structure, C18H23N3O3S, CAS 860610-23-7](/s/LOSDBVXAMMSZHF-UHFFFAOYSA-N.svg)
Ethyl 1-{[2-(4-aminophenoxy)-1,3-thiazol-5-yl]methyl}-4-piperidinecarboxylate
CAS 860610-23-7C18H23N3O3S
4-Methyl-N-(2-morpholino-2-(pyridin-3-yl)ethyl)benzenesulfonamide
CAS 862827-31-4C18H23N3O3S
![3-[4-(Propan-2-ylsulfamoyl)phenyl]-N-(pyridin-4-ylmethyl)propanamide chemical structure, C18H23N3O3S, CAS 701289-03-4](/s/AHMMJVRGTIYAHZ-UHFFFAOYSA-N.svg)
3-[4-(Propan-2-ylsulfamoyl)phenyl]-N-(pyridin-4-ylmethyl)propanamide
CAS 701289-03-4C18H23N3O3S
![N-(2-tert-Butyl-4,6-dihydrothieno[3,4-c]pyrazol-3-yl)-2-(4-methoxyphenoxy)acetamide chemical structure, C18H23N3O3S, CAS 893928-04-6](/s/XUSPVWVRSWBJIB-UHFFFAOYSA-N.svg)
N-(2-tert-Butyl-4,6-dihydrothieno[3,4-c]pyrazol-3-yl)-2-(4-methoxyphenoxy)acetamide
CAS 893928-04-6C18H23N3O3S
![2-[Methyl-(2,4,6-trimethylphenyl)sulfonylamino]-N-(pyridin-4-ylmethyl)acetamide chemical structure, C18H23N3O3S, CAS 675861-79-7](/s/UGDQMAVHDCCGRY-UHFFFAOYSA-N.svg)
2-[Methyl-(2,4,6-trimethylphenyl)sulfonylamino]-N-(pyridin-4-ylmethyl)acetamide
CAS 675861-79-7C18H23N3O3S
![tert-Butyl 2-[5-(benzylsulfanyl)-1,3,4-oxadiazol-2-yl]pyrrolidine-1-carboxylate chemical structure, C18H23N3O3S, CAS 1173675-35-8](/s/NBBAUFIORHNARV-AWEZNQCLSA-N.svg)
tert-Butyl 2-[5-(benzylsulfanyl)-1,3,4-oxadiazol-2-yl]pyrrolidine-1-carboxylate
CAS 1173675-35-8C18H23N3O3S
![2-({1-[2-(2,6-Dimethylmorpholin-4-yl)-2-oxoethyl]-1H-indol-3-yl}sulfanyl)acetamide chemical structure, C18H23N3O3S, CAS 895810-25-0](/s/WZNUPPWHWGAVIR-UHFFFAOYSA-N.svg)
2-({1-[2-(2,6-Dimethylmorpholin-4-yl)-2-oxoethyl]-1H-indol-3-yl}sulfanyl)acetamide
CAS 895810-25-0C18H23N3O3S
- N-Cyclohexyl-2-({5-[(4-methylphenoxy)methyl]-1,3,4-oxadiazol-2-yl}sulfanyl)acetamide432020-53-6C18H23N3O3S
- N1-((1-(furan-2-ylmethyl)piperidin-4-yl)methyl)-N2-(thiophen-2-ylmethyl)oxalamide953180-79-5C18H23N3O3S
- 2-[2,4-Dioxo-3-(piperidin-1-ylmethyl)-1,3-thiazolidin-5-yl]-N-(4-methylphenyl)acetamide314260-16-7C18H23N3O3S
- Azd-18971204181-93-0C18H23N3O3S
- 5-(tert-Butylsulfamoyl)-2-methyl-N-(5-methylpyridin-2-yl)benzamide924060-81-1C18H23N3O3S
- N-(2-(tert-Butyl)-4,6-dihydro-2H-thieno[3,4-c]pyrazol-3-yl)-2,4-dimethoxybenzamide392255-53-7C18H23N3O3S
- N-(2-(tert-Butyl)-5,5-dioxido-4,6-dihydro-2H-thieno[3,4-c]pyrazol-3-yl)-3-phenylpropanamide449784-71-8C18H23N3O3S
- N-(2-(tert-Butyl)-4,6-dihydro-2H-thieno[3,4-c]pyrazol-3-yl)-2,3-dimethoxybenzamide391866-56-1C18H23N3O3S
- N-(2-(tert-Butyl)-4,6-dihydro-2H-thieno[3,4-c]pyrazol-3-yl)-3,5-dimethoxybenzamide392253-37-1C18H23N3O3S
- N-(5-(Cyclohex-3-enecarbonyl)-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-yl)tetrahydrofuran-2-carboxamide1396786-85-8C18H23N3O3S
- tert-Butyl N-{5-[(2,6-dimethylphenyl)carbamoyl]-4-methyl-1,3-thiazol-2-yl}carbamate302958-40-3C18H23N3O3S
- 2-(Cyclopentylthio)-1-(4-(5-(furan-2-yl)-1,3,4-oxadiazol-2-yl)piperidin-1-yl)ethanone1209429-02-6C18H23N3O3S
- Ethyl 4-(5-(4-methoxybenzyl)-1,3,4-thiadiazol-2-yl)piperidine-1-carboxylate1251687-73-6C18H23N3O3S
- N-(1-Hydroxy-2-methylpropan-2-yl)-2-(4-(3-(thiophen-2-ylmethyl)ureido)phenyl)acetamide1235106-03-2C18H23N3O3S
- 1-(4-((1H-Imidazol-1-yl)methyl)piperidin-1-yl)-3-(phenylsulfonyl)propan-1-one1286722-50-6C18H23N3O3S
- 2-Cyclopropyl-5-(1-((2,5-dimethylphenyl)sulfonyl)piperidin-4-yl)-1,3,4-oxadiazole1172486-08-6C18H23N3O3S
- Methyl 2-(1-ethyl-5-methyl-1H-pyrazole-3-carboxamido)-6-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate1171958-90-9C18H23N3O3S
- N-(4-(N-(4-(Dimethylamino)phenethyl)sulfamoyl)phenyl)acetamide952981-60-1C18H23N3O3S
- 1-(3-Methoxyphenyl)-3-(2-morpholino-2-(thiophen-3-yl)ethyl)urea1173079-23-6C18H23N3O3S
- N-4-Pyridyl6-(tosylamino)hexanamide795293-72-0C18H23N3O3S
- N-(Cyclopropylsulfonyl)-1-methyl-3-(4-piperidinyl)-1H-indole-6-carboxamide2316849-42-8C18H23N3O3S
- N-(Cyclopropylsulfonyl)-1-methyl-3-(3-piperidinyl)-1H-indole-6-carboxamide2323574-99-6C18H23N3O3S
- (2,3-Dimethoxyphenyl)-[4-[(4-methyl-1,3-thiazol-2-yl)methyl]piperazin-1-yl]methanone1172423-41-4C18H23N3O3S
- 1-(3,5-Dimethylpiperidin-1-yl)-2-[[5-(4-methoxyphenyl)-1,3,4-oxadiazol-2-yl]sulfanyl]ethanone850936-83-3C18H23N3O3S
- (Z)-Ethyl 2-(2-(2-(4-butoxybenzylidene)hydrazinyl)thiazol-4-yl)acetate6133-47-7C18H23N3O3S
- N-[5-[(3,4-Dimethoxyphenyl)methyl]-1,3,4-thiadiazol-2-yl]cyclohexanecarboxamide600149-81-3C18H23N3O3S
- 1-Butan-2-yl-4-(4-ethoxyphenyl)-4,8-dihydro-2H-pyrazolo[3,4-e][1,4]thiazepine-3,7-dione578701-16-3C18H23N3O3S
- 2-Cyano-3-[4-(diethylamino)phenyl]-N-(1,1-dioxo-1lambda6-thiolan-3-yl)prop-2-enamide324567-12-6C18H23N3O3S
- Ethyl 1-((2-thioxo-5-(p-tolyl)-1,3,4-oxadiazol-3(2H)-yl)methyl)piperidine-4-carboxylate312522-98-8C18H23N3O3S
- N-[2-(4-Methylpiperazin-1-yl)-2-oxoethyl]-N-naphthalen-1-ylmethanesulfonamide579444-11-4C18H23N3O3S
- AH-487/152740286325-29-7C18H23N3O3S
- (3-(Azepan-1-ylsulfonyl)phenyl)(3,5-dimethyl-1H-pyrazol-1-yl)methanone955961-92-9C18H23N3O3S
- 2-[[5-(4-tert-Butylphenyl)-1,3,4-oxadiazol-2-yl]sulfanyl]-1-morpholin-4-ylethanone850937-63-2C18H23N3O3S
- N-(2-tert-Butyl-5-oxo-4,6-dihydrothieno[3,4-c]pyrazol-3-yl)-2-ethoxybenzamide1007476-29-0C18H23N3O3S
- 2-(3,4-Dimethyl-N-methylsulfonylanilino)-N-(pyridin-2-ylmethyl)propanamide1022922-46-8C18H23N3O3S
- 2-((5-(4-Ethoxyphenyl)-1,3,4-oxadiazol-2-yl)thio)-1-(2-methylpiperidin-1-yl)ethanone850937-25-6C18H23N3O3S
- N-(2-(tert-Butyl)-4,6-dihydro-2H-thieno[3,4-c]pyrazol-3-yl)-2,6-dimethoxybenzamide361167-14-8C18H23N3O3S
- 1-((4-(Isopropoxy)phenyl)sulfonyl)-4-(2-pyridyl)piperazine1024523-27-0C18H23N3O3S
- 1-[(2,4-Dimethoxy-3-methylphenyl)sulfinyl]-4-(2-pyridinyl)piperazine338981-93-4C18H23N3O3S
- Methyl [3-oxo-1-(phenylcarbamothioyl)decahydroquinoxalin-2-yl]acetate1008940-52-0C18H23N3O3S
- N-(2-tert-Butyl-4,6-dihydrothieno[3,4-c]pyrazol-3-yl)-2-(3-methoxyphenoxy)acetamide893927-96-3C18H23N3O3S
- N-(4-(2-((2-Methoxybenzyl)amino)-2-oxoethyl)thiazol-2-yl)pivalamide923172-98-9C18H23N3O3S
- (E)-2-Isopropyl-5-(1-(styrylsulfonyl)piperidin-4-yl)-1,3,4-oxadiazole1211883-36-1C18H23N3O3S
- Ethyl 2-({[1-(1H-pyrrol-1-yl)cyclohexyl]acetyl}amino)-1,3-thiazole-4-carboxylate1574410-84-6C18H23N3O3S
- 2-((5-(4-Ethoxyphenyl)-1,3,4-oxadiazol-2-yl)thio)-1-(4-methylpiperidin-1-yl)ethanone850937-11-0C18H23N3O3S
- N-Cyclohexyl-2-{[5-(4-ethoxyphenyl)-1,3,4-oxadiazol-2-yl]sulfanyl}acetamide850937-18-7C18H23N3O3S
- Ethyl 3-cyano-2-(cyclohexanecarboxamido)-4,5-dihydrothieno[2,3-c]pyridine-6(7H)-carboxylate864927-01-5C18H23N3O3S
- Isopropyl 2-{[(1-ethyl-1H-pyrazol-3-yl)carbonyl]amino}-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate492425-58-8C18H23N3O3S
- N-Butyl-4-oxo-3-((tetrahydrofuran-2-yl)methyl)-2-thioxo-1,2,3,4-tetrahydroquinazoline-7-carboxamide443350-26-3C18H23N3O3S
- Methyl 3-(2-azepan-1-ylethyl)-4-oxo-2-thioxo-1,2,3,4-tetrahydroquinazoline-7-carboxylate946252-82-0C18H23N3O3S
- 2-[Acetyl(isopropyl)amino]-N-(4-methoxybenzyl)-4-methyl-1,3-thiazole-5-carboxamide1219556-85-0C18H23N3O3S
- N-(2,3-Dimethoxyphenyl)-4-(thiophen-3-ylmethyl)piperazine-1-carboxamide1226445-73-3C18H23N3O3S
- tert-Butyl 4-(4-oxo-2-thioxo-1,4-dihydroquinazolin-3(2H)-yl)piperidine-1-carboxylate1285077-96-4C18H23N3O3S
- 1-(4-(1,1-Dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)-2-(1H-indol-1-yl)ethanone1351680-16-4C18H23N3O3S
- (4-((1H-Imidazol-1-yl)methyl)phenyl)(3-(isobutylsulfonyl)azetidin-1-yl)methanone1797086-91-9C18H23N3O3S
- 2-[N-(Dimethylsulfamoyl)anilino]-N-(2-ethylphenyl)acetamide827009-49-4C18H23N3O3S
- N-(2-tert-Butyl-5-oxo-4,6-dihydrothieno[3,4-c]pyrazol-3-yl)-2-phenoxypropanamide1007476-34-7C18H23N3O3S
- N-(3,5-Dimethoxyphenyl)-3-(4,6-dimethyl-2-methylsulfanylpyrimidin-5-yl)propanamide930426-82-7C18H23N3O3S
- 2-Ethyl-N-(4-(6-(ethylsulfonyl)pyridazin-3-yl)phenyl)butanamide1005294-78-9C18H23N3O3S
- N-(4-(2-((3-Methoxybenzyl)amino)-2-oxoethyl)thiazol-2-yl)pivalamide923680-22-2C18H23N3O3S
- N1-(2-(dimethylamino)-2-(thiophen-2-yl)ethyl)-N2-(2-methoxy-5-methylphenyl)oxalamide941932-36-1C18H23N3O3S
- 2-(Cyclopropylamino)-N-[2-(3,4-dimethoxyphenyl)ethyl]-4-methyl-1,3-thiazole-5-carboxamide1190252-96-0C18H23N3O3S
- 1-(4-(Cyclopropylsulfonyl)piperazin-1-yl)-2-(1-methyl-1H-indol-3-yl)ethanone1219913-56-0C18H23N3O3S
- (4-(1,1-Dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)(1-methyl-1H-indol-4-yl)methanone1282143-57-0C18H23N3O3S
- (4-(1,1-Dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)(1-methyl-1H-indol-6-yl)methanone1324095-58-0C18H23N3O3S
- N-(5-Isopropyl-1,3,4-thiadiazol-2-yl)-4-(4-methoxyphenyl)tetrahydro-2H-pyran-4-carboxamide1324072-06-1C18H23N3O3S
- 1-(1,1-Dioxidotetrahydrothiophen-3-yl)-3,5-dimethyl-N-(2-phenylethyl)-1H-pyrazole-4-carboxamide1374518-85-0C18H23N3O3S
- 5-{[(4,6-Dimethylpyrimidin-2-yl)sulfanyl]methyl}-N-(tetrahydro-2H-pyran-4-ylmethyl)furan-2-carboxamide1401568-89-5C18H23N3O3S
- (1-(6-Methoxybenzo[d]thiazol-2-yl)piperidin-3-yl)(morpholino)methanone1421526-23-9C18H23N3O3S
- 2-(3,5-Dimethyl-N-methylsulfonylanilino)-N-(pyridin-3-ylmethyl)propanamide1033591-57-9C18H23N3O3S
- N-(2-tert-Butyl-4,6-dihydrothieno[3,4-c]pyrazol-3-yl)-2-(2-methoxyphenoxy)acetamide893927-88-3C18H23N3O3S
- N1-(2-(dimethylamino)-2-(thiophen-3-yl)ethyl)-N2-(2-methoxy-5-methylphenyl)oxalamide946328-30-9C18H23N3O3S
- N1-(2-(dimethylamino)-2-(thiophen-3-yl)ethyl)-N2-(4-methoxybenzyl)oxalamide946272-92-0C18H23N3O3S
- 3-{4-[2-(1H-Indol-3-yl)-2-oxoethyl]piperazin-1-yl}-1lambda6-thiolane-1,1-dione923848-35-5C18H23N3O3S
- 2-Ethyl-N-(3-(6-(ethylsulfonyl)pyridazin-3-yl)phenyl)butanamide1005305-42-9C18H23N3O3S
- 1-{[3,5-Dimethyl-1-(3-methylbenzoyl)-1H-pyrazol-4-yl]sulfonyl}piperidine904820-41-3C18H23N3O3S
Frequently asked questions
What is the molar mass of C18H23N3O3S?
The molar mass of C18H23N3O3S is 361.46 g/mol, calculated from standard atomic weights for 18 carbon atoms, 23 hydrogen atoms, 3 nitrogen atoms, 3 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 361.1460 Da.
How many compounds have the formula C18H23N3O3S?
CompoundList lists 213 compounds with the molecular formula C18H23N3O3S, including 3-Amino-N-(4-methoxyphenyl)-4-(piperidin-1-yl)benzene-1-sulfonamide, 5-Amino-N-(4-methoxyphenyl)-2-(piperidin-1-yl)benzene-1-sulfonamide, 1-Amino-5-(4-morpholinyl)-6,7,8,9-tetrahydrothieno[2,3-c]isoquinoline-2-carboxylic acid ethyl ester. 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 C18H23N3O3S?
C18H23N3O3S 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.