Molecular formula
C21H17N3O2S
132 compounds have this formula on CompoundList.
- Molar mass
- 375.45g/mol
- Monoisotopic mass
- 380.1355Da
- Atoms
- 44
- Elements
- 5
- Rings plus double bonds
- 15
The formula C21H17N3O2S describes a molecule made of 21 carbon atoms, 17 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 × 2167.18%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 174.56%1.008 × 17 = 17.136 g/mol
- N Nitrogen × 311.19%14.007 × 3 = 42.021 g/mol
- O Oxygen × 28.52%15.999 × 2 = 31.998 g/mol
- S Sulfur × 18.54%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C21H17N3O2S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 132 compounds
![(5Z)-5-[(2,5-Dimethyl-1-pyridin-3-ylpyrrol-3-yl)methylidene]-3-phenyl-1,3-thiazolidine-2,4-dione chemical structure, C21H17N3O2S, CAS 677331-12-3](/s/NCSHZXNGQYSKLR-UNOMPAQXSA-N.svg)
(5Z)-5-[(2,5-Dimethyl-1-pyridin-3-ylpyrrol-3-yl)methylidene]-3-phenyl-1,3-thiazolidine-2,4-dione
CAS 677331-12-3C21H17N3O2S
3-(Benzothiazol-2-yl)-7-(diethylamino)-2-oxo-2H-1-benzopyran-4-carbonitrile
CAS 70546-25-7C21H17N3O2S
5-Benzyl-2-(furan-2-ylmethylene-hydrazono)-3-phenyl-thiazolidin-4-one
CAS 306321-45-9C21H17N3O2S
![2-(Benzofuro[3,2-d]pyrimidin-4-ylthio)-1-(3,4-dihydroquinolin-1(2H)-yl)ethanone chemical structure, C21H17N3O2S, CAS 845661-35-0](/s/PKZDUEUZDLPGLZ-UHFFFAOYSA-N.svg)
2-(Benzofuro[3,2-d]pyrimidin-4-ylthio)-1-(3,4-dihydroquinolin-1(2H)-yl)ethanone
CAS 845661-35-0C21H17N3O2S
1-(Biphenyl-4-yl)-2-(5-(furan-2-yl)-4-methyl-4H-1,2,4-triazol-3-ylthio)ethanone
CAS 578004-86-1C21H17N3O2S
![N-[(2,3-Dihydro-1,4-benzodioxin-2-yl)methyl]-6-phenylthieno[2,3-d]pyrimidin-4-amine chemical structure, C21H17N3O2S, CAS 744222-53-5](/s/SYZTWBPKCRNLCK-UHFFFAOYSA-N.svg)
N-[(2,3-Dihydro-1,4-benzodioxin-2-yl)methyl]-6-phenylthieno[2,3-d]pyrimidin-4-amine
CAS 744222-53-5C21H17N3O2S
![2-[[5-(1-Benzofuran-2-yl)-4-prop-2-enyl-1,2,4-triazol-3-yl]sulfanyl]-1-phenylethanone chemical structure, C21H17N3O2S, CAS 713490-58-5](/s/SDJJTTZLKBYYDT-UHFFFAOYSA-N.svg)
2-[[5-(1-Benzofuran-2-yl)-4-prop-2-enyl-1,2,4-triazol-3-yl]sulfanyl]-1-phenylethanone
CAS 713490-58-5C21H17N3O2S
![2-[(4,5-Diphenyl-1,2,4-triazol-3-yl)sulfanyl]-1-(5-methylfuran-2-yl)ethanone chemical structure, C21H17N3O2S, CAS 695199-51-0](/s/ADKNRDUGVFOVHV-UHFFFAOYSA-N.svg)
2-[(4,5-Diphenyl-1,2,4-triazol-3-yl)sulfanyl]-1-(5-methylfuran-2-yl)ethanone
CAS 695199-51-0C21H17N3O2S
![N-{4-[5-(4-Methylphenyl)-1,3,4-oxadiazol-2-yl]phenyl}-2-(2-thienyl)acetamide chemical structure, C21H17N3O2S, CAS 717831-70-4](/s/LRZDWJSTQDTGRF-UHFFFAOYSA-N.svg)
N-{4-[5-(4-Methylphenyl)-1,3,4-oxadiazol-2-yl]phenyl}-2-(2-thienyl)acetamide
CAS 717831-70-4C21H17N3O2S
(5E)-5-(2-(Allyloxy)benzylidene)-2-(4-methylphenyl)(1,3)thiazolo(3,2-B)(1,2,4)triazol-6(5H)-one
CAS 606959-55-1C21H17N3O2S
![N'-[(E)-(2-Hydroxynaphthalen-1-yl)methylidene]-3-methyl-4H-1,4-benzothiazine-2-carbohydrazide chemical structure, C21H17N3O2S, CAS 314074-06-1](/s/JGTICGPGVXYBGS-WSDLNYQXSA-N.svg)
N'-[(E)-(2-Hydroxynaphthalen-1-yl)methylidene]-3-methyl-4H-1,4-benzothiazine-2-carbohydrazide
CAS 314074-06-1C21H17N3O2S
![2-{[3-Cyano-4-(4-methoxyphenyl)-6-phenyl-2-pyridinyl]sulfanyl}acetamide chemical structure, C21H17N3O2S, CAS 94360-69-7](/s/XXVIHZDDRNUITI-UHFFFAOYSA-N.svg)
2-{[3-Cyano-4-(4-methoxyphenyl)-6-phenyl-2-pyridinyl]sulfanyl}acetamide
CAS 94360-69-7C21H17N3O2S
![N-[3-[5-(3-Methylphenyl)-1,3,4-oxadiazol-2-yl]phenyl]-2-thiophen-2-ylacetamide chemical structure, C21H17N3O2S, CAS 717829-28-2](/s/XNHCFLTZPCRTTD-UHFFFAOYSA-N.svg)
N-[3-[5-(3-Methylphenyl)-1,3,4-oxadiazol-2-yl]phenyl]-2-thiophen-2-ylacetamide
CAS 717829-28-2C21H17N3O2S
3-(4-Methylpyrimidin-2-yl)sulfanyl-1-(4-phenylphenyl)pyrrolidine-2,5-dione
CAS 330826-06-7C21H17N3O2S
![2-[3-Cyano-4-(2-methoxyphenyl)-6-phenylpyridin-2-yl]sulfanylacetamide chemical structure, C21H17N3O2S, CAS 312758-21-7](/s/OIAAKSNQUQKMRP-UHFFFAOYSA-N.svg)
2-[3-Cyano-4-(2-methoxyphenyl)-6-phenylpyridin-2-yl]sulfanylacetamide
CAS 312758-21-7C21H17N3O2S
3-(2-Methoxy-phenyl)-2-(pyridin-2-ylsulfanylmethyl)-3H-quinazolin-4-one
CAS 348593-56-6C21H17N3O2S
![N-((1-Ethyl-2-oxo-1,2-dihydrobenzo[cd]indol-6-yl)carbamothioyl)benzamide chemical structure, C21H17N3O2S, CAS 329903-29-9](/s/KOFZYNZFCUIVKJ-UHFFFAOYSA-N.svg)
N-((1-Ethyl-2-oxo-1,2-dihydrobenzo[cd]indol-6-yl)carbamothioyl)benzamide
CAS 329903-29-9C21H17N3O2S
1-Benzyl-N-(4-methyl-1,3-benzothiazol-2-yl)-2-oxo-1,2-dihydropyridine-3-carboxamide
CAS 946353-53-3C21H17N3O2S
1-(1,3-Benzothiazol-2-yl)-6-(4-methoxyphenyl)-1,5,6,7-tetrahydro-4H-indazol-4-one
CAS 774561-05-6C21H17N3O2S
![N-(4-Methylphenyl)-2-(4-oxo-7-phenylthieno[3,2-d]pyrimidin-3(4H)-yl)acetamide chemical structure, C21H17N3O2S, CAS 1105235-21-9](/s/OTDKZGIMYKFYCG-UHFFFAOYSA-N.svg)
N-(4-Methylphenyl)-2-(4-oxo-7-phenylthieno[3,2-d]pyrimidin-3(4H)-yl)acetamide
CAS 1105235-21-9C21H17N3O2S
![N-Benzyl-2-(4-oxo-7-phenylthieno[3,2-d]pyrimidin-3(4H)-yl)acetamide chemical structure, C21H17N3O2S, CAS 1105234-78-3](/s/TXEYJOFOFIEUFB-UHFFFAOYSA-N.svg)
N-Benzyl-2-(4-oxo-7-phenylthieno[3,2-d]pyrimidin-3(4H)-yl)acetamide
CAS 1105234-78-3C21H17N3O2S
![N-Methyl-2-(4-oxo-7-phenylthieno[3,2-d]pyrimidin-3(4H)-yl)-N-phenylacetamide chemical structure, C21H17N3O2S, CAS 1105223-98-0](/s/BBYLXQGIRIAGFN-UHFFFAOYSA-N.svg)
N-Methyl-2-(4-oxo-7-phenylthieno[3,2-d]pyrimidin-3(4H)-yl)-N-phenylacetamide
CAS 1105223-98-0C21H17N3O2S
![N-(2-Methylphenyl)-2-(4-oxo-7-phenylthieno[3,2-d]pyrimidin-3(4H)-yl)acetamide chemical structure, C21H17N3O2S, CAS 1105235-71-9](/s/ZTKQFRNVTSFLBF-UHFFFAOYSA-N.svg)
N-(2-Methylphenyl)-2-(4-oxo-7-phenylthieno[3,2-d]pyrimidin-3(4H)-yl)acetamide
CAS 1105235-71-9C21H17N3O2S
![N-(3-Methylphenyl)-2-(4-oxo-7-phenylthieno[3,2-d]pyrimidin-3(4H)-yl)acetamide chemical structure, C21H17N3O2S, CAS 1105207-40-6](/s/KFEUFSAXIWNUKC-UHFFFAOYSA-N.svg)
N-(3-Methylphenyl)-2-(4-oxo-7-phenylthieno[3,2-d]pyrimidin-3(4H)-yl)acetamide
CAS 1105207-40-6C21H17N3O2S
- (5Z)-5-[2-(Allyloxy)benzylidene]-2-(2-methylphenyl)[1,3]thiazolo[3,2-b][1,2,4]triazol-6(5H)-one577981-21-6C21H17N3O2S
- (5Z)-5-[4-(Allyloxy)benzylidene]-2-(2-methylphenyl)[1,3]thiazolo[3,2-b][1,2,4]triazol-6(5H)-one579442-02-7C21H17N3O2S
- 2-Amino-6-benzyl-7-methyl-5-oxo-4-(thiophen-2-yl)-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile612802-40-1C21H17N3O2S
- N-[5-(3-Methylsulfanylphenyl)-1,3,4-oxadiazol-2-yl]-2-naphthalen-1-ylacetamide898449-72-4C21H17N3O2S
- Indolin-1-yl(6-(4-methoxyphenyl)imidazo[2,1-b]thiazol-3-yl)methanone1049420-55-4C21H17N3O2S
- 2-(4-Methoxyphenyl)-N-(4-(thiazolo[5,4-b]pyridin-2-yl)phenyl)acetamide852453-57-7C21H17N3O2S
- N-Benzhydryl-3-methyl-5-oxo-5H-thiazolo[3,2-a]pyrimidine-6-carboxamide851944-76-8C21H17N3O2S
- N-(2-Methyl-4-oxo-3-(p-tolyl)-3,4-dihydroquinazolin-6-yl)thiophene-2-carboxamide1105236-24-5C21H17N3O2S
- 2-Methyl-N-(3-(7-methyl-5-oxo-5H-thiazolo[3,2-a]pyrimidin-3-yl)phenyl)benzamide1021073-80-2C21H17N3O2S
- 2-(((5-Methyl-2-phenyloxazol-4-yl)methyl)thio)-6-phenylpyrimidin-4-ol1040646-01-2C21H17N3O2S
- 2-Ethoxy-N-(4-(thiazolo[5,4-b]pyridin-2-yl)phenyl)benzamide863588-51-6C21H17N3O2S
- 1-(4-Methoxyphenyl)-2-((2-phenylimidazo[1,2-b]pyridazin-6-yl)thio)ethanone896299-73-3C21H17N3O2S
- N-(7-Methyl-5-oxo-5H-thiazolo[3,2-a]pyrimidin-6-yl)-2,2-diphenylacetamide941966-42-3C21H17N3O2S
- 9-Methyl-2-(2-methylindoline-1-carbonyl)-4H-pyrido[1,2-a]thieno[2,3-d]pyrimidin-4-one690252-71-2C21H17N3O2S
- 2-((3-(1H-Benzo[d]imidazol-2-yl)pyridin-2-yl)thio)-1-(4-methoxyphenyl)ethanone1226453-24-2C21H17N3O2S
- 2-[(4-Hydroxy-6-phenylpyrimidin-2-yl)thio]-1-(2-methyl-1H-indol-3-yl)ethanone896664-75-8C21H17N3O2S
- (2E)-N-(5-Benzyl-1,3-thiazol-2-yl)-2-cyano-3-(4-methoxyphenyl)prop-2-enamide468767-51-3C21H17N3O2S
- 3-Ethyl-4-{4-nitrophenyl}-2-(1-naphthylimino)-2,3-dihydro-1,3-thiazole298194-60-2C21H17N3O2S
- 2-(3,4-Dihydroisoquinolin-2(1H)-ylcarbonyl)-9-methyl-4H-pyrido[1,2-a]thieno[2,3-d]pyrimidin-4-one690252-87-0C21H17N3O2S
- 3-Amino-4-(4-methoxyphenyl)-6-phenylthieno[2,3-b]pyridine-2-carboxamide189132-54-5C21H17N3O2S
- 2-(1H-Benzimidazol-2-ylsulfanyl)-N-(4-phenoxyphenyl)acetamide436115-02-5C21H17N3O2S
- 5-(4-Methoxyphenyl)-4-(4-phenoxyphenyl)-4H-1,2,4-triazole-3-thiol523990-77-4C21H17N3O2S
- Ethyl 4-[(6-phenylthieno[2,3-d]pyrimidin-4-yl)amino]benzoate380179-94-2C21H17N3O2S
- N,N-Dibenzyl-5-oxo-5H-thiazolo[3,2-a]pyrimidine-6-carboxamide851943-43-6C21H17N3O2S
- N-Benzyl-2-methyl-5-oxo-N-phenyl-5H-thiazolo[3,2-a]pyrimidine-6-carboxamide896337-60-3C21H17N3O2S
- (E)-3-(((2-Hydroxynaphthalen-1-yl)methylene)amino)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one302936-37-4C21H17N3O2S
- [1]Benzothiepino[5,4-b]pyridine-3-carbonitrile, 2-amino-5,6-dihydro-4-(4-methylphenyl)-, 7,7-dioxide286412-17-7C21H17N3O2S
- N-(Naphthalen-1-yl)-2-((5-(m-tolyl)-1,3,4-oxadiazol-2-yl)thio)acetamide337490-35-4C21H17N3O2S
- (E)-3-(Benzo[d][1,3]dioxol-5-ylamino)-2-(4-(4-ethylphenyl)thiazol-2-yl)acrylonitrile1610551-26-2C21H17N3O2S
- 2-Ethoxy-N-(3-{[1,3]thiazolo[5,4-B]pyridin-2-YL}phenyl)benzamide863589-26-8C21H17N3O2S
- (E)-2-(4-(Benzo[d][1,3]dioxol-5-yl)thiazol-2-yl)-3-((2-ethylphenyl)amino)acrylonitrile371953-12-7C21H17N3O2S
- N-[4-([1,3]Oxazolo[4,5-b]pyridin-2-yl)benzyl]-2-(phenylsulfanyl)acetamide1003665-90-4C21H17N3O2S
- N-{[4-(Methylsulfanyl)phenyl]methyl}-11-oxo-11H-pyrido[2,1-b]quinazoline-8-carboxamide1428353-05-2C21H17N3O2S
- N-(9H-Fluoren-2-yl)-6-oxo-2,3,4,6-tetrahydropyrimido[2,1-b][1,3]thiazine-3-carboxamide1396769-86-0C21H17N3O2S
- 2-[[5-(Naphthalen-1-ylmethyl)-4-phenyl-1,2,4-triazol-3-yl]sulfanyl]acetic acid68614-60-8C21H17N3O2S
- 3-Amino-N-(4-methoxyphenyl)-6-phenylthieno[2,3-b]pyridine-2-carboxamide296797-35-8C21H17N3O2S
- N-(4-{[5-(4-Methylphenyl)thieno[2,3-d]pyrimidin-4-yl]oxy}phenyl)acetamide496024-32-9C21H17N3O2S
- Methyl 4-((2-methyl-6-phenylthieno[2,3-d]pyrimidin-4-yl)amino)benzoate371236-98-5C21H17N3O2S
- (E)-3-(Benzo[d][1,3]dioxol-5-ylamino)-2-(4-(3,4-dimethylphenyl)thiazol-2-yl)acrylonitrile377065-64-0C21H17N3O2S
- (E)-3-(Benzo[d][1,3]dioxol-5-ylamino)-2-(4-(2,4-dimethylphenyl)thiazol-2-yl)acrylonitrile378214-89-2C21H17N3O2S
- 1-(3-Methoxyphenyl)-3-(4-(naphthalen-1-yl)thiazol-2-yl)urea313395-47-0C21H17N3O2S
- 1-(4-Methoxyphenyl)-3-(4-(naphthalen-1-yl)thiazol-2-yl)urea313395-52-7C21H17N3O2S
- N-Benzyl-3-methyl-5-oxo-N-phenyl-5H-thiazolo[3,2-a]pyrimidine-6-carboxamide851944-89-3C21H17N3O2S
- (E)-2-(4-(Benzo[d][1,3]dioxol-5-yl)thiazol-2-yl)-3-((4-ethylphenyl)amino)acrylonitrile476676-99-0C21H17N3O2S
- (E)-3-((3-Acetylphenyl)amino)-2-(4-(4-methoxyphenyl)thiazol-2-yl)acrylonitrile683258-70-0C21H17N3O2S
- N-[[5-(Naphthalen-1-ylmethylsulfanyl)-1,3,4-oxadiazol-2-yl]methyl]benzamide872613-62-2C21H17N3O2S
- N-[5-(2-Methylsulfanylphenyl)-1,3,4-oxadiazol-2-yl]-2-naphthalen-1-ylacetamide898410-80-5C21H17N3O2S
- N-(1,3-Benzodioxol-5-yl)-2-(4-methylsulfanylphenyl)imidazo[1,2-a]pyridin-3-amine879606-61-8C21H17N3O2S
- 1-((E)-(2-Carbamothioylhydrazono)methyl)naphthalen-2-yl cinnamate405905-16-0C21H17N3O2S
- Methyl 4-{[(1E)-2-cyano-2-[4-(4-methylphenyl)-1,3-thiazol-2-yl]eth-1-en-1-yl]amino}benzoate1021263-12-6C21H17N3O2S
- 2-(4-Oxoquinazolin-3(4H)-yl)-N-(2-(thiophen-3-yl)benzyl)acetamide1797638-09-5C21H17N3O2S
- 2-[(4-Phenylbenzoyl)carbamothioylamino]benzamide530139-04-9C21H17N3O2S
- (E)-3-((3-Acetylphenyl)amino)-2-(4-(3-methoxyphenyl)thiazol-2-yl)acrylonitrile683258-71-1C21H17N3O2S
- 2-(4-Methoxyphenyl)-N-(5-methyl-1,3-thiazol-2-yl)quinoline-4-carboxamide784159-78-0C21H17N3O2S
- N-(2-Methyl-5-(thiazolo[5,4-b]pyridin-2-yl)phenyl)-2-phenoxyacetamide863593-99-1C21H17N3O2S
- 3-Methoxy-N-(2-methyl-5-{[1,3]thiazolo[5,4-B]pyridin-2-YL}phenyl)benzamide863594-25-6C21H17N3O2S
- N-(2-Methyl-3-{[1,3]thiazolo[5,4-B]pyridin-2-YL}phenyl)-2-phenoxyacetamide863593-30-0C21H17N3O2S
- N-(6-Acetyl-3-cyano-5,7-dihydro-4H-thieno[2,3-c]pyridin-2-yl)naphthalene-2-carboxamide864858-98-0C21H17N3O2S
- 3-Methoxy-N-(2-methyl-3-{[1,3]thiazolo[5,4-B]pyridin-2-YL}phenyl)benzamide863593-65-1C21H17N3O2S
- (E)-2-(4-(Benzo[d][1,3]dioxol-5-yl)thiazol-2-yl)-3-((3,5-dimethylphenyl)amino)acrylonitrile373374-61-9C21H17N3O2S
- 2-(1,3-Benzoxazol-2-ylsulfanyl)-N-[(Z)-1-naphthalen-2-ylethylideneamino]acetamide345331-07-9C21H17N3O2S
- Benzenesulfonamide, 4-methyl-N-(2-phenyl-4-quinazolinyl)-50871-62-0C21H17N3O2S
- (Z)-2-(4-(Benzo[d][1,3]dioxol-5-yl)thiazol-2-yl)-3-(4-(dimethylamino)phenyl)acrylonitrile375363-25-0C21H17N3O2S
- N-(4-(Phenylamino)phenyl)-2-(5-(thiophen-2-yl)isoxazol-3-yl)acetamide946228-39-3C21H17N3O2S
- N-(6-Methoxybenzo[d]thiazol-2-yl)-N-(pyridin-4-ylmethyl)benzamide941994-42-9C21H17N3O2S
- 4-Cyano-N-[4-({[(thiophen-2-yl)methyl]carbamoyl}methyl)phenyl]benzamide1060250-30-7C21H17N3O2S
- N-(2-((6-(Thiophen-2-yl)pyridazin-3-yl)oxy)ethyl)-1-naphthamide920170-18-9C21H17N3O2S
- 1-(4-Acetylphenyl)-5-amino-4-(4-phenyl-1,3-thiazol-2-yl)-1,2-dihydro-3H-pyrrol-3-one951985-55-0C21H17N3O2S
- (Z)-Ethyl 4-((2-cyano-2-(4-phenylthiazol-2-yl)vinyl)amino)benzoate1321664-35-0C21H17N3O2S
- 4-Ethoxy-N-(4-(thiazolo[5,4-b]pyridin-2-yl)phenyl)benzamide863588-90-3C21H17N3O2S
- (Z)-N-(6-Acetamido-3-(prop-2-yn-1-yl)benzo[d]thiazol-2(3H)-ylidene)cinnamamide865182-85-0C21H17N3O2S
- N-Benzhydryl-2-methyl-5-oxo-5H-thiazolo[3,2-a]pyrimidine-6-carboxamide896336-96-2C21H17N3O2S
- N-[5-(4-Methylsulfanylphenyl)-1,3,4-oxadiazol-2-yl]-2-naphthalen-1-ylacetamide898449-84-8C21H17N3O2S
- N-(2-(o-Tolyl)-4,6-dihydro-2H-thieno[3,4-c]pyrazol-3-yl)benzofuran-2-carboxamide893944-72-4C21H17N3O2S
- N-(2-(6-Oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)ethyl)-1-naphthamide946344-88-3C21H17N3O2S
- N-(2-(6-Oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)ethyl)-2-naphthamide946239-63-0C21H17N3O2S
Frequently asked questions
What is the molar mass of C21H17N3O2S?
The molar mass of C21H17N3O2S is 375.45 g/mol, calculated from standard atomic weights for 21 carbon atoms, 17 hydrogen atoms, 3 nitrogen atoms, 2 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 380.1355 Da.
How many compounds have the formula C21H17N3O2S?
CompoundList lists 132 compounds with the molecular formula C21H17N3O2S, including (5Z)-5-[(2,5-Dimethyl-1-pyridin-3-ylpyrrol-3-yl)methylidene]-3-phenyl-1,3-thiazolidine-2,4-dione, 3-(Benzothiazol-2-yl)-7-(diethylamino)-2-oxo-2H-1-benzopyran-4-carbonitrile, 5-Benzyl-2-(furan-2-ylmethylene-hydrazono)-3-phenyl-thiazolidin-4-one. 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 C21H17N3O2S?
C21H17N3O2S has a degree of unsaturation of 15. 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.