Molecular formula
C21H23N3O2S
217 compounds have this formula on CompoundList.
- Molar mass
- 381.49g/mol
- Monoisotopic mass
- 381.1511Da
- Atoms
- 50
- Elements
- 5
- Rings plus double bonds
- 12
The formula C21H23N3O2S describes a molecule made of 21 carbon atoms, 23 hydrogen atoms, 3 nitrogen atoms, 2 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 × 2166.12%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 236.08%1.008 × 23 = 23.184 g/mol
- N Nitrogen × 311.01%14.007 × 3 = 42.021 g/mol
- O Oxygen × 28.39%15.999 × 2 = 31.998 g/mol
- S Sulfur × 18.40%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C21H23N3O2S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 200 of 217 compounds
N-(2,3-Dimethylphenyl)-2-((1-(4-ethoxyphenyl)-1H-imidazol-2-yl)thio)acetamide
CAS 688336-35-8C21H23N3O2S
N-Mesityl-2-((1-(4-methoxyphenyl)-1H-imidazol-2-yl)thio)acetamide
CAS 688336-20-1C21H23N3O2S
![4-Acetyl-N-(3-cyano-5,5,7,7-tetramethyl-4,6-dihydrothieno[2,3-c]pyridin-2-yl)benzamide chemical structure, C21H23N3O2S, CAS 887902-29-6](/s/UZPKHDFYEWUZQP-UHFFFAOYSA-N.svg)
4-Acetyl-N-(3-cyano-5,5,7,7-tetramethyl-4,6-dihydrothieno[2,3-c]pyridin-2-yl)benzamide
CAS 887902-29-6C21H23N3O2S
2-((1-(4-Ethoxyphenyl)-1H-imidazol-2-yl)thio)-N-(4-ethylphenyl)acetamide
CAS 688336-52-9C21H23N3O2S
![2-[1-(3,5-Dimethylphenyl)imidazol-2-yl]sulfanyl-N-(4-ethoxyphenyl)acetamide chemical structure, C21H23N3O2S, CAS 851131-94-7](/s/ZQAKZUNZIUUGMB-UHFFFAOYSA-N.svg)
2-[1-(3,5-Dimethylphenyl)imidazol-2-yl]sulfanyl-N-(4-ethoxyphenyl)acetamide
CAS 851131-94-7C21H23N3O2S
![3-Amino-6-ethyl-N-(4-methoxyphenyl)-5,6,7,8-tetrahydrothieno[2,3-b]quinoline-2-carboxamide chemical structure, C21H23N3O2S, CAS 445269-08-9](/s/UTMCUTBNUIEDNE-UHFFFAOYSA-N.svg)
3-Amino-6-ethyl-N-(4-methoxyphenyl)-5,6,7,8-tetrahydrothieno[2,3-b]quinoline-2-carboxamide
CAS 445269-08-9C21H23N3O2S
![1-Acetyl-N-[3-cyano-4-(2,5-dimethylphenyl)thiophen-2-yl]piperidine-4-carboxamide chemical structure, C21H23N3O2S, CAS 915903-66-1](/s/MGPQTHDJHZLMGZ-UHFFFAOYSA-N.svg)
1-Acetyl-N-[3-cyano-4-(2,5-dimethylphenyl)thiophen-2-yl]piperidine-4-carboxamide
CAS 915903-66-1C21H23N3O2S
1-(4-Ethoxyphenyl)-3-(2-(7-methyl-2-oxo-1,2-dihydroquinolin-3-yl)ethyl)thiourea
CAS 847406-69-3C21H23N3O2S
![N-(4-Methoxyphenyl)-2-spiro[1H-quinazoline-2,1'-cyclopentane]-4-ylsulfanylacetamide chemical structure, C21H23N3O2S, CAS 894873-77-9](/s/GQUWLLVTOFJESL-UHFFFAOYSA-N.svg)
N-(4-Methoxyphenyl)-2-spiro[1H-quinazoline-2,1'-cyclopentane]-4-ylsulfanylacetamide
CAS 894873-77-9C21H23N3O2S
![1-[4-(4,5-Dimethyl-1,3-benzothiazol-2-yl)piperazin-1-yl]-2-phenoxyethanone chemical structure, C21H23N3O2S, CAS 886915-99-7](/s/KWJMTDYISQHRLJ-UHFFFAOYSA-N.svg)
1-[4-(4,5-Dimethyl-1,3-benzothiazol-2-yl)piperazin-1-yl]-2-phenoxyethanone
CAS 886915-99-7C21H23N3O2S
![1-[4-(4,7-Dimethyl-1,3-benzothiazol-2-yl)piperazin-1-yl]-2-phenoxyethanone chemical structure, C21H23N3O2S, CAS 897485-91-5](/s/GADZKMIVNINFDT-UHFFFAOYSA-N.svg)
1-[4-(4,7-Dimethyl-1,3-benzothiazol-2-yl)piperazin-1-yl]-2-phenoxyethanone
CAS 897485-91-5C21H23N3O2S
2-((2,2-Dimethyl-5-(p-tolyl)-2H-imidazol-4-yl)thio)-N-(4-methoxyphenyl)acetamide
CAS 899914-15-9C21H23N3O2S
N-(3,5-Dimethylphenyl)-4-(3-methoxyphenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxamide
CAS 941948-13-6C21H23N3O2S
N-(2,3-Dimethylphenyl)-2-((5-(4-methoxyphenyl)-1-methyl-1H-imidazol-2-yl)thio)acetamide
CAS 484681-64-3C21H23N3O2S
N1-(2-(dimethylamino)-2-(naphthalen-1-yl)ethyl)-N2-(thiophen-2-ylmethyl)oxalamide
CAS 941977-07-7C21H23N3O2S
![N-(4-Methylphenyl)-3-{3-oxo-8-thia-4,6-diazatricyclo[7.5.0.0^{2,7}]tetradeca-1(9),2(7),5-trien-5-yl}propanamide chemical structure, C21H23N3O2S, CAS 950414-25-2](/s/CXSNJDWWYPUDHQ-UHFFFAOYSA-N.svg)
N-(4-Methylphenyl)-3-{3-oxo-8-thia-4,6-diazatricyclo[7.5.0.0^{2,7}]tetradeca-1(9),2(7),5-trien-5-yl}propanamide
CAS 950414-25-2C21H23N3O2S
![N-[1-[4-(Methylsulfonyl)benzyl]pyrrolidin-3-yl]isoquinolin-5-amine chemical structure, C21H23N3O2S, CAS 1035096-25-3](/s/IERPXRYTDDRYGB-UHFFFAOYSA-N.svg)
N-[1-[4-(Methylsulfonyl)benzyl]pyrrolidin-3-yl]isoquinolin-5-amine
CAS 1035096-25-3C21H23N3O2S
![N-[4-(Dimethylamino)phenyl]-4-methyl-2-[(4-methylphenoxy)methyl]-1,3-thiazole-5-carboxamide chemical structure, C21H23N3O2S, CAS 1000931-15-6](/s/IHLNEZYNIODDKO-UHFFFAOYSA-N.svg)
N-[4-(Dimethylamino)phenyl]-4-methyl-2-[(4-methylphenoxy)methyl]-1,3-thiazole-5-carboxamide
CAS 1000931-15-6C21H23N3O2S
![1-{4-[5-(Furan-2-yl)-1,3,4-thiadiazol-2-yl]piperidin-1-yl}-2-phenylbutan-1-one chemical structure, C21H23N3O2S, CAS 1172574-66-1](/s/PIJFDQYZQKXLGY-UHFFFAOYSA-N.svg)
1-{4-[5-(Furan-2-yl)-1,3,4-thiadiazol-2-yl]piperidin-1-yl}-2-phenylbutan-1-one
CAS 1172574-66-1C21H23N3O2S
N-(1-Cyanocyclobutyl)-N-methyl-5-(morpholin-4-yl)-4-phenylthiophene-2-carboxamide
CAS 1424497-39-1C21H23N3O2S
N-((1-(Pyridin-2-yl)piperidin-4-yl)methyl)naphthalene-1-sulfonamide
CAS 1234896-16-2C21H23N3O2S
![5-Methyl-1-phenyl-N-{[4-(thiophen-2-yl)oxan-4-yl]methyl}-1H-pyrazole-4-carboxamide chemical structure, C21H23N3O2S, CAS 1324706-90-2](/s/OOAJFEDQIRICDM-UHFFFAOYSA-N.svg)
5-Methyl-1-phenyl-N-{[4-(thiophen-2-yl)oxan-4-yl]methyl}-1H-pyrazole-4-carboxamide
CAS 1324706-90-2C21H23N3O2S
![N,N-Diethyl-2-[3-(3-methylphenyl)-4-oxoquinazolin-2-yl]sulfanylacetamide chemical structure, C21H23N3O2S, CAS 385417-73-2](/s/GLFMYLOMWXFBNU-UHFFFAOYSA-N.svg)
N,N-Diethyl-2-[3-(3-methylphenyl)-4-oxoquinazolin-2-yl]sulfanylacetamide
CAS 385417-73-2C21H23N3O2S
1-Piperidinecarbothioamide, 4-(2-benzoxazolyl)-N-(4-ethoxyphenyl)-
CAS 605628-82-8C21H23N3O2S
- N-[[2-(3,4-Dimethylphenyl)-1,3-benzoxazol-5-yl]carbamothioyl]-2,2-dimethylpropanamide532409-63-5C21H23N3O2S
- 3-(1,3-Benzothiazol-2-yl)-1-[4-(2-methoxyphenyl)piperazin-1-yl]propan-1-one735296-94-3C21H23N3O2S
- N-(2,5-Dimethylphenyl)-4-(2-methoxyphenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxamide537680-28-7C21H23N3O2S
- 2-({5-[1-(4-Ethylphenoxy)ethyl]-4-methyl-4H-1,2,4-triazol-3-yl}sulfanyl)-1-phenylethanone713494-10-1C21H23N3O2S
- N-(3,5-Dimethylphenyl)-2-((1-(4-ethoxyphenyl)-1H-imidazol-2-yl)thio)acetamide688336-38-1C21H23N3O2S
- 4-Ethoxy-N-[5-(2,3,5,6-tetramethylphenyl)-1,3,4-thiadiazol-2-yl]benzamide391228-02-7C21H23N3O2S
- 2-((1-(3,5-Dimethylphenyl)-1H-imidazol-2-yl)thio)-N-(2-ethoxyphenyl)acetamide851132-22-4C21H23N3O2S
- 3-(4-Methylbenzenesulfonyl)-4-(4-methylpiperazin-1-yl)quinoline866847-37-2C21H23N3O2S
- 4-Ethoxy-N-(2-{[5-(4-methylphenyl)-1H-imidazol-2-yl]sulfanyl}ethyl)benzamide897454-77-2C21H23N3O2S
- N-(3-Methoxyphenyl)-2-spiro[1H-quinazoline-2,1'-cyclopentane]-4-ylsulfanylacetamide894873-40-6C21H23N3O2S
- 1-[4-(6-Methoxy-1,3-benzothiazol-2-yl)piperazin-1-yl]-3-phenylpropan-1-one897469-84-0C21H23N3O2S
- 2-[4-(4-Methoxybenzoyl)piperazin-1-yl]-4,5-dimethyl-1,3-benzothiazole898351-19-4C21H23N3O2S
- 1-(4-(6-Ethoxybenzo[d]thiazol-2-yl)piperazin-1-yl)-2-phenylethanone897470-20-1C21H23N3O2S
- N-(3,5-Dimethylphenyl)-2-[1-(2-methoxy-5-methylphenyl)imidazol-2-yl]sulfanylacetamide893383-65-8C21H23N3O2S
- 4-(tert-Butyl)-N-(2-(6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)ethyl)benzamide946345-04-6C21H23N3O2S
- N-(2,5-Dimethylphenyl)-4-(4-methoxyphenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxamide941897-99-0C21H23N3O2S
- N-(3,4-Dimethylphenyl)-4-(4-methoxyphenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxamide941948-10-3C21H23N3O2S
- N-(2,5-Dimethylphenyl)-4-(3-methoxyphenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxamide941944-35-0C21H23N3O2S
- N-(3,5-Dimethylphenyl)-2-((5-(4-methoxyphenyl)-1-methyl-1H-imidazol-2-yl)thio)acetamide932325-71-8C21H23N3O2S
- N-(4-Ethylphenyl)-2-((5-(4-methoxyphenyl)-1-methyl-1H-imidazol-2-yl)thio)acetamide932329-77-6C21H23N3O2S
- N-(2,4-Dimethylphenyl)-2-((5-(4-methoxyphenyl)-1-methyl-1H-imidazol-2-yl)thio)acetamide932515-53-2C21H23N3O2S
- 2-((5-(4-Methoxyphenyl)-1-methyl-1H-imidazol-2-yl)thio)-N-phenethylacetamide932329-86-7C21H23N3O2S
- 2-(4-Methoxyphenyl)-N-(2-((5-(p-tolyl)-1H-imidazol-2-yl)thio)ethyl)acetamide897455-29-7C21H23N3O2S
- 2-((5-(Hydroxymethyl)-1-(4-methylbenzyl)-1H-imidazol-2-yl)thio)-N-methyl-N-phenylacetamide899748-02-8C21H23N3O2S
- N-(2,3-Dimethylphenyl)-2-({1-[(2-methoxyphenyl)methyl]-1H-imidazol-2-yl}sulfanyl)acetamide946202-94-4C21H23N3O2S
- N-(3,5-Dimethylphenyl)-2-({1-[(2-methoxyphenyl)methyl]-1H-imidazol-2-yl}sulfanyl)acetamide946320-50-9C21H23N3O2S
- 2-(2-(Benzylthio)-5-(hydroxymethyl)-1H-imidazol-1-yl)-N-(4-methylbenzyl)acetamide921504-44-1C21H23N3O2S
- N-Benzyl-2-(5-(hydroxymethyl)-2-((4-methylbenzyl)thio)-1H-imidazol-1-yl)acetamide921822-40-4C21H23N3O2S
- N-Benzyl-2-(5-(hydroxymethyl)-2-((3-methylbenzyl)thio)-1H-imidazol-1-yl)acetamide921886-32-0C21H23N3O2S
- N-Benzyl-2-(5-(hydroxymethyl)-2-((2-methylbenzyl)thio)-1H-imidazol-1-yl)acetamide921822-37-9C21H23N3O2S
- 3-Cyano-6-cyclopropyl-N-methyl-N-[[5-(2-methylcyclopropyl)furan-2-yl]methyl]-2-methylsulfanylpyridine-4-carboxamide1100185-97-4C21H23N3O2S
- 2-((1-(2-Methoxyethyl)-5-phenyl-1H-imidazol-2-yl)thio)-N-(p-tolyl)acetamide1207036-03-0C21H23N3O2S
- 2-((1-(2-Methoxyethyl)-5-(p-tolyl)-1H-imidazol-2-yl)thio)-N-phenylacetamide1206996-98-6C21H23N3O2S
- 3-(1H-Indol-3-yl)-N-[1-(thiophen-2-ylcarbonyl)piperidin-4-yl]propanamide1282134-07-9C21H23N3O2S
- N-(Bicyclo[2.2.1]hept-5-en-2-ylmethyl)-2-{3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetamide1324076-35-8C21H23N3O2S
- 2-(4-(Isopropylthio)phenyl)-N-(2-((3-methyl-1,2,4-oxadiazol-5-yl)methyl)phenyl)acetamide1448052-67-2C21H23N3O2S
- N-{2-[5-Cyclopropyl-3-(thiophen-2-yl)-1H-pyrazol-1-yl]ethyl}-4-ethoxybenzamide1797716-16-5C21H23N3O2S
- N-{2-[5-Cyclopropyl-3-(thiophen-2-yl)-1H-pyrazol-1-yl]ethyl}-2-(3-methoxyphenyl)acetamide1798028-11-1C21H23N3O2S
- N-((1-(Pyridin-4-yl)piperidin-4-yl)methyl)naphthalene-1-sulfonamide2034503-61-0C21H23N3O2S
- 2-(Thiophen-2-yl)-1-(3-((3-(o-tolyl)-1,2,4-oxadiazol-5-yl)methyl)piperidin-1-yl)ethanone1705468-89-8C21H23N3O2S
- (4-Methylthiophen-2-yl)(3-((3-(o-tolyl)-1,2,4-oxadiazol-5-yl)methyl)piperidin-1-yl)methanone1705069-43-7C21H23N3O2S
- 2-(Thiophen-3-yl)-1-(3-((3-(o-tolyl)-1,2,4-oxadiazol-5-yl)methyl)piperidin-1-yl)ethanone1705469-05-1C21H23N3O2S
- 4-Phenyl-N-(2-(3-(thiophen-3-yl)-1H-pyrazol-1-yl)ethyl)tetrahydro-2H-pyran-4-carboxamide2034452-18-9C21H23N3O2S
- 1-(4-Butoxyphenyl)-3-((2-(thiophen-3-yl)pyridin-4-yl)methyl)urea2034397-37-8C21H23N3O2S
- N-([2,3'-Bipyridin]-4-ylmethyl)-2,3,5,6-tetramethylbenzenesulfonamide2034247-21-5C21H23N3O2S
- N-(2-(2-Methyl-1H-indol-1-yl)ethyl)-6-((tetrahydrothiophen-3-yl)oxy)nicotinamide2034238-56-5C21H23N3O2S
- N-([2,3'-Bipyridin]-3-ylmethyl)-4-(tert-butyl)benzenesulfonamide2034441-35-3C21H23N3O2S
- N-(2-(1H-Pyrazol-1-yl)-2-(thiophen-2-yl)ethyl)-4-phenyltetrahydro-2H-pyran-4-carboxamide2034599-39-6C21H23N3O2S
- 3-(4-Propoxyphenyl)-N-((3-(thiophen-2-yl)pyrazin-2-yl)methyl)propanamide2034425-32-4C21H23N3O2S
- N-(2-(1H-Pyrazol-1-yl)-2-(thiophen-3-yl)ethyl)-4-phenyltetrahydro-2H-pyran-4-carboxamide2034568-93-7C21H23N3O2S
- (E)-N-(2-(3,5-Dimethyl-4-phenyl-1H-pyrazol-1-yl)ethyl)-2-phenylethenesulfonamide2035006-86-9C21H23N3O2S
- 2,2-Dimethyl-N-[[2-methyl-3-(5-methyl-1,3-benzoxazol-2-yl)phenyl]carbamothioyl]propanamide533920-27-3C21H23N3O2S
- (5E)-1-(2,3-Dimethylphenyl)-5-[(1-ethyl-2,5-dimethyl-1H-pyrrol-3-yl)methylidene]-2-thioxodihydropyrimidine-4,6(1H,5H)-dione593272-87-8C21H23N3O2S
- 2-[[5-[(2,6-Dimethylphenoxy)methyl]-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-1-phenylethanone713498-59-0C21H23N3O2S
- N-[[4-(5-Butan-2-yl-1,3-benzoxazol-2-yl)phenyl]carbamothioyl]propanamide530146-84-0C21H23N3O2S
- 3-Cyclopentyl-4-(2,5-dimethoxyphenyl)-N-pyridin-3-yl-1,3-thiazol-2-imine1049985-04-7C21H23N3O2S
- N-[[(3-Cyanophenyl)amino]thioxomethyl]-2-(hexyloxy)benzamide881220-01-5C21H23N3O2S
- 3-(Benzenesulfonyl)-6-methyl-4-(4-methylpiperazin-1-yl)quinoline872200-25-4C21H23N3O2S
- 1-[4-(4-Methyl-1,3-benzothiazol-2-yl)piperazin-1-yl]-3-phenoxypropan-1-one897475-43-3C21H23N3O2S
- 1-[4-(4-Methoxy-1,3-benzothiazol-2-yl)piperazin-1-yl]-3-phenylpropan-1-one897477-52-0C21H23N3O2S
- 3-(1,3-Benzothiazol-2-yl)-1-[4-(4-methoxyphenyl)piperazin-1-yl]propan-1-one1225174-34-4C21H23N3O2S
- 2-((1-(Furan-2-ylmethyl)-5-(p-tolyl)-1H-imidazol-2-yl)thio)-1-(pyrrolidin-1-yl)ethanone1207007-77-9C21H23N3O2S
- 1-(Cyclohexanesulfonyl)-6-(1-phenylethenyl)-1H-benzimidazol-2-amine88990-06-1C21H23N3O2S
- N-((1-Methyl-5-(thiophen-2-yl)-1H-pyrazol-3-yl)methyl)-4-phenyltetrahydro-2H-pyran-4-carboxamide1421513-31-6C21H23N3O2S
- 2-Ethyl-N-(4-(3-methoxypyrrolidin-1-yl)phenyl)benzo[d]thiazole-6-carboxamide1797699-72-9C21H23N3O2S
- N-[[5-(5,7-Dimethyl-1,3-benzoxazol-2-yl)-2-methylphenyl]carbamothioyl]butanamide429648-56-6C21H23N3O2S
- 1-Amino-N-(4-ethoxyphenyl)-5-methyl-6,7,8,9-tetrahydrothieno[2,3-c]isoquinoline-2-carboxamide612054-30-5C21H23N3O2S
- 2-{[3-(Cyclopentylmethyl)-2-quinolinyl]sulfanyl}-N-(5-methyl-1,2-oxazol-3-yl)acetamide606113-86-4C21H23N3O2S
- 4-Piperidinecarboxamide, 1-(2-benzothiazolyl)-N-[(3-methoxyphenyl)methyl]-605640-09-3C21H23N3O2S
- (2Z)-N-(2-Methoxyphenyl)-4-(4-methylphenyl)-3-(morpholin-4-yl)-1,3-thiazol-2(3H)-imine1049203-56-6C21H23N3O2S
- tert-Butyl [4-(2-ethyl-4-phenyl-1,3-thiazol-5-yl)pyridin-2-yl]carbamate365430-35-9C21H23N3O2S
- tert-Butyl {4-[2-methyl-4-(3-methylphenyl)-1,3-thiazol-5-yl]pyridin-2-yl}carbamate365428-43-9C21H23N3O2S
- N-[3-(3-Methyl-1-phenyl-1H-pyrazol-4-yl)propyl]-2-phenylethene-1-sulfonamide1173580-71-6C21H23N3O2S
- Methanesulfonamide, N-[3-(4-cyano-2-ethylphenyl)-1-(1-methylethyl)-1H-indol-6-yl]-945555-66-8C21H23N3O2S
- 2-[(4-Cyano-1-methyl-5,6,7,8-tetrahydroisoquinolin-3-yl)sulfanyl]-N-(2-ethoxyphenyl)acetamide1440248-89-4C21H23N3O2S
- 4-(3,5-Dimethyl-1-piperidinyl)-5-methyl-2-phenylthieno[2,3-d]pyrimidine-6-carboxylic acid1082119-65-0C21H23N3O2S
Frequently asked questions
What is the molar mass of C21H23N3O2S?
The molar mass of C21H23N3O2S is 381.49 g/mol, calculated from standard atomic weights for 21 carbon atoms, 23 hydrogen atoms, 3 nitrogen atoms, 2 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 381.1511 Da.
How many compounds have the formula C21H23N3O2S?
CompoundList lists 217 compounds with the molecular formula C21H23N3O2S, including N-(2,3-Dimethylphenyl)-2-((1-(4-ethoxyphenyl)-1H-imidazol-2-yl)thio)acetamide, N-Mesityl-2-((1-(4-methoxyphenyl)-1H-imidazol-2-yl)thio)acetamide, 4-Acetyl-N-(3-cyano-5,5,7,7-tetramethyl-4,6-dihydrothieno[2,3-c]pyridin-2-yl)benzamide. 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 C21H23N3O2S?
C21H23N3O2S has a degree of unsaturation of 12. 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.