Molecular formula
C19H16N4OS
112 compounds have this formula on CompoundList.
- Molar mass
- 348.42g/mol
- Monoisotopic mass
- 348.1045Da
- Atoms
- 41
- Elements
- 5
- Rings plus double bonds
- 14
The formula C19H16N4OS describes a molecule made of 19 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms, 1 oxygen atom 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 × 1965.50%12.011 × 19 = 228.209 g/mol
- H Hydrogen × 164.63%1.008 × 16 = 16.128 g/mol
- N Nitrogen × 416.08%14.007 × 4 = 56.028 g/mol
- O Oxygen × 14.59%15.999 × 1 = 15.999 g/mol
- S Sulfur × 19.20%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C19H16N4OS
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 112 compounds
![3-Methyl-N-(6-methylpyridin-2-yl)-6-phenylimidazo[2,1-b][1,3]thiazole-2-carboxamide chemical structure, C19H16N4OS, CAS 852133-66-5](/s/YZQBEHJFOUBTLN-UHFFFAOYSA-N.svg)
3-Methyl-N-(6-methylpyridin-2-yl)-6-phenylimidazo[2,1-b][1,3]thiazole-2-carboxamide
CAS 852133-66-5C19H16N4OS
![9-Phenyl-6-(2-thienyl)-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one chemical structure, C19H16N4OS, CAS 727394-75-4](/s/CWUNNMNOQCOWFB-UHFFFAOYSA-N.svg)
9-Phenyl-6-(2-thienyl)-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one
CAS 727394-75-4C19H16N4OS
1-(Indolin-1-yl)-2-((6-(pyridin-2-yl)pyridazin-3-yl)thio)ethanone
CAS 894001-25-3C19H16N4OS
![6-Benzylsulfanyl-3-(4-methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazine chemical structure, C19H16N4OS, CAS 852376-77-3](/s/YQZQZWAPNRTPIQ-UHFFFAOYSA-N.svg)
6-Benzylsulfanyl-3-(4-methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazine
CAS 852376-77-3C19H16N4OS
2-(Methoxymethyl)-4,6-dimethylpyrido(3'',2'':4',5')thieno(3',2':4,5)pyrimido(1,6-a)benzimidazole
CAS 294876-54-3C19H16N4OS
![2-[(1-Benzylimidazol-2-yl)sulfanylmethyl]-5-phenyl-1,3,4-oxadiazole chemical structure, C19H16N4OS, CAS 712338-76-6](/s/BOAATBNFDPLCCW-UHFFFAOYSA-N.svg)
2-[(1-Benzylimidazol-2-yl)sulfanylmethyl]-5-phenyl-1,3,4-oxadiazole
CAS 712338-76-6C19H16N4OS
![2-([1,2,4]Triazolo[4,3-a]quinolin-1-ylthio)-N-(p-tolyl)acetamide chemical structure, C19H16N4OS, CAS 671199-12-5](/s/RHJSXUYHNKGFCI-UHFFFAOYSA-N.svg)
2-([1,2,4]Triazolo[4,3-a]quinolin-1-ylthio)-N-(p-tolyl)acetamide
CAS 671199-12-5C19H16N4OS
![2-(((1H-Benzo[d]imidazol-2-yl)methyl)thio)-3-allylquinazolin-4(3H)-one chemical structure, C19H16N4OS, CAS 438574-70-0](/s/XAKVHNSPIOJRGP-UHFFFAOYSA-N.svg)
2-(((1H-Benzo[d]imidazol-2-yl)methyl)thio)-3-allylquinazolin-4(3H)-one
CAS 438574-70-0C19H16N4OS
2-(3-Cyano-4,6-dimethylpyridin-2-yl)sulfanyl-N-quinolin-8-ylacetamide
CAS 402954-16-9C19H16N4OS
![3-Amino-4,6-dimethyl-N-(quinolin-8-yl)thieno[2,3-b]pyridine-2-carboxamide chemical structure, C19H16N4OS, CAS 402954-20-5](/s/QRXXWISWBNPJKM-UHFFFAOYSA-N.svg)
3-Amino-4,6-dimethyl-N-(quinolin-8-yl)thieno[2,3-b]pyridine-2-carboxamide
CAS 402954-20-5C19H16N4OS
![(E)-1-((2-(5,6-Dimethylthieno[2,3-d]pyrimidin-4-yl)hydrazono)methyl)naphthalen-2-ol chemical structure, C19H16N4OS, CAS 302954-63-8](/s/ZHLIBGVCPIYWGR-LSFURLLWSA-N.svg)
(E)-1-((2-(5,6-Dimethylthieno[2,3-d]pyrimidin-4-yl)hydrazono)methyl)naphthalen-2-ol
CAS 302954-63-8C19H16N4OS
![3-Methyl-1-phenyl-N-(pyridin-3-ylmethyl)-1H-thieno[2,3-c]pyrazole-5-carboxamide chemical structure, C19H16N4OS, CAS 326915-93-9](/s/ABJGNKGWFFUPSX-UHFFFAOYSA-N.svg)
3-Methyl-1-phenyl-N-(pyridin-3-ylmethyl)-1H-thieno[2,3-c]pyrazole-5-carboxamide
CAS 326915-93-9C19H16N4OS
1-(1H-Benzimidazol-2-yl)-3-methyl-6-(thiophen-2-yl)-1,5,6,7-tetrahydro-4H-indazol-4-one
CAS 924875-98-9C19H16N4OS
2-(2-(1H-Pyrrol-1-yl)thiazol-4-yl)-N-(2-methylquinolin-5-yl)acetamide
CAS 1203110-63-7C19H16N4OS
![4-((1H-Imidazol-1-yl)methyl)-N-(2-methylbenzo[d]thiazol-6-yl)benzamide chemical structure, C19H16N4OS, CAS 1206996-45-3](/s/TYLXWGYFTKNMFJ-UHFFFAOYSA-N.svg)
4-((1H-Imidazol-1-yl)methyl)-N-(2-methylbenzo[d]thiazol-6-yl)benzamide
CAS 1206996-45-3C19H16N4OS
5-(((1-Phenyl-1H-imidazol-2-yl)thio)methyl)-3-(m-tolyl)-1,2,4-oxadiazole
CAS 1111965-90-2C19H16N4OS
![N-(3-(Benzo[d]thiazol-2-yl)phenyl)-1-ethyl-1H-pyrazole-3-carboxamide chemical structure, C19H16N4OS, CAS 1172419-54-3](/s/HBEVCEUUDZEUGC-UHFFFAOYSA-N.svg)
N-(3-(Benzo[d]thiazol-2-yl)phenyl)-1-ethyl-1H-pyrazole-3-carboxamide
CAS 1172419-54-3C19H16N4OS
1-Ethyl-N-(4-(naphthalen-1-yl)thiazol-2-yl)-1H-pyrazole-5-carboxamide
CAS 1171463-78-7C19H16N4OS
![N-(Benzo[d]thiazol-2-yl)-N-benzyl-1-methyl-1H-pyrazole-5-carboxamide chemical structure, C19H16N4OS, CAS 1170816-26-8](/s/KDCCYYFODXFUSF-UHFFFAOYSA-N.svg)
N-(Benzo[d]thiazol-2-yl)-N-benzyl-1-methyl-1H-pyrazole-5-carboxamide
CAS 1170816-26-8C19H16N4OS
![4-[4-(3-Methoxyphenyl)-1,3-thiazol-2-yl]-5-methyl-1-phenyl-1H-1,2,3-triazole chemical structure, C19H16N4OS, CAS 1105239-51-7](/s/VGWIYEUSRXQKKS-UHFFFAOYSA-N.svg)
4-[4-(3-Methoxyphenyl)-1,3-thiazol-2-yl]-5-methyl-1-phenyl-1H-1,2,3-triazole
CAS 1105239-51-7C19H16N4OS
![N-(2-(1H-Pyrazol-1-yl)ethyl)-N-(benzo[d]thiazol-2-yl)benzamide chemical structure, C19H16N4OS, CAS 1172334-12-1](/s/FRENZCGITJZKFK-UHFFFAOYSA-N.svg)
N-(2-(1H-Pyrazol-1-yl)ethyl)-N-(benzo[d]thiazol-2-yl)benzamide
CAS 1172334-12-1C19H16N4OS
![N-(4-(Benzo[d]thiazol-2-yl)phenyl)-1,5-dimethyl-1H-pyrazole-3-carboxamide chemical structure, C19H16N4OS, CAS 1013769-24-8](/s/ZLCCEWNFWKHXHX-UHFFFAOYSA-N.svg)
N-(4-(Benzo[d]thiazol-2-yl)phenyl)-1,5-dimethyl-1H-pyrazole-3-carboxamide
CAS 1013769-24-8C19H16N4OS
![1-Methyl-N-(4-(6-methylbenzo[d]thiazol-2-yl)phenyl)-1H-pyrazole-5-carboxamide chemical structure, C19H16N4OS, CAS 1052621-94-9](/s/OVKFBSDFDFCUOZ-UHFFFAOYSA-N.svg)
1-Methyl-N-(4-(6-methylbenzo[d]thiazol-2-yl)phenyl)-1H-pyrazole-5-carboxamide
CAS 1052621-94-9C19H16N4OS
![2-Benzyl-5-(phenylsulfanylmethyl)-1H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one chemical structure, C19H16N4OS, CAS 1029520-93-1](/s/PAXBAEACGXWSRC-UHFFFAOYSA-N.svg)
2-Benzyl-5-(phenylsulfanylmethyl)-1H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one
CAS 1029520-93-1C19H16N4OS
- 1H-Pyrazol-5-amine, 3-(4-methoxyphenyl)-1-(4-phenyl-2-thiazolyl)-74101-13-6C19H16N4OS
- 2-[(5-Methyl-[1,2,4]triazolo[4,3-a]quinolin-1-yl)sulfanyl]-N-phenylacetamide483292-10-0C19H16N4OS
- 3-(4-Methoxybenzyl)-6-[(E)-2-phenylethenyl][1,2,4]triazolo[3,4-b][1,3,4]thiadiazole853749-68-5C19H16N4OS
- 3-{[(E)-1H-Indol-3-ylmethylidene]amino}-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4(3H)-one330449-41-7C19H16N4OS
- 1-(4-Methylphenyl)-2-[(5-methyl-[1,2,4]triazino[5,6-b]indol-3-yl)sulfanyl]ethanone433257-05-7C19H16N4OS
- 6-Amino-3-methyl-1-(4-methylphenyl)-4-thiophen-3-yl-4H-pyrano[2,3-c]pyrazole-5-carbonitrile445222-37-7C19H16N4OS
- 7-Methyl-5-phenyl-N-(thiophen-2-ylmethyl)pyrazolo[1,5-a]pyrimidine-2-carboxamide312635-08-8C19H16N4OS
- N-[6-Methyl-2-(4-methylphenyl)benzotriazol-5-yl]thiophene-2-carboxamide403662-03-3C19H16N4OS
- 3-Benzyl-6-[(E)-2-(2-methoxyphenyl)ethenyl]-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole708996-94-5C19H16N4OS
- 4-(4-Methoxyphenyl)-1-(4-phenyl-1,3-thiazol-2-yl)-1H-pyrazol-5-amine956961-86-7C19H16N4OS
- 6-[(E)-2-(2-Methoxyphenyl)ethenyl]-3-(4-methylphenyl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole791824-48-1C19H16N4OS
- 1-(Indolin-1-yl)-2-((6-(pyridin-3-yl)pyridazin-3-yl)thio)ethanone872987-41-2C19H16N4OS
- Pyrido(3',2':4,5)thieno(3,2-d)pyrimidin-4(3H)-one, 3-(benzylideneamino)-2,7,9-trimethyl-99504-90-2C19H16N4OS
- 3-Methyl-N-(5-methylpyridin-2-yl)-6-phenylimidazo[2,1-b]thiazole-2-carboxamide919018-79-4C19H16N4OS
- Sdccgsbi-0133601.P001919018-85-2C19H16N4OS
- 1-Benzyl-N-[(2E)-5-methyl-1,3,4-thiadiazol-2(3H)-ylidene]-1H-indole-5-carboxamide1144489-87-1C19H16N4OS
- 2-(1H-Benzo[d]imidazol-1-yl)-N-((2-(thiophen-3-yl)pyridin-3-yl)methyl)acetamide2034565-15-4C19H16N4OS
- 4(3H)-Quinazolinone, 3-(5-(1-methylethyl)-1,3,4-thiadiazol-2-yl)-2-phenyl-68142-73-4C19H16N4OS
- 5-[(4-Methoxyphenyl)methylsulfanyl]-1-naphthalen-1-yltetrazole303064-36-0C19H16N4OS
- 4H-1,3-Thiazino(5,6-b)quinoxalin-4-one, 2-((4-(1-methylethyl)phenyl)amino)-154371-16-1C19H16N4OS
- 4H-1,3-Thiazino(5,6-b)quinoxalin-4-one, 2-((2,4,6-trimethylphenyl)amino)-154371-24-1C19H16N4OS
- 6-[(E)-2-(4-Methoxyphenyl)ethenyl]-3-(3-methylphenyl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole794550-32-6C19H16N4OS
- 6-[(E)-2-(2-Methoxyphenyl)ethenyl]-3-(3-methylphenyl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole895332-66-8C19H16N4OS
- 3-Cyclopropyl-2-(imidazo[1,2-a]pyridin-2-ylmethylsulfanyl)quinazolin-4-one832139-10-3C19H16N4OS
- N-(5-Methyl-1,3,4-thiadiazol-2-yl)-2-(2-phenyl-1H-indol-1-yl)acetamide873884-44-7C19H16N4OS
- 1-[(5-Phenyl-1,3,4-oxadiazol-2-yl)methyl]-2-(prop-2-en-1-ylsulfanyl)-1H-benzimidazole902253-22-9C19H16N4OS
- 3-(1H-Indol-1-yl)-N-(4-(pyridin-2-yl)thiazol-2-yl)propanamide1330618-40-0C19H16N4OS
- 2-(1-Methyl-1H-indol-2-yl)-N-(4-methylpyridin-2-yl)thiazole-4-carboxamide1172448-77-9C19H16N4OS
- 3-(1H-Indol-1-yl)-N-[4-(pyridin-4-yl)-1,3-thiazol-2-yl]propanamide1374524-88-5C19H16N4OS
- 2-(5-Methyl-1H-indol-1-yl)-N-[4-(pyridin-4-yl)-1,3-thiazol-2-yl]acetamide1374522-80-1C19H16N4OS
- 2-(5-Methyl-1H-indol-1-yl)-N-[4-(pyridin-3-yl)-1,3-thiazol-2-yl]acetamide1374536-43-2C19H16N4OS
- N-Cyclopropyl-N-(imidazo[1,2-a]pyridin-3-ylmethyl)benzo[d]thiazole-2-carboxamide1448050-41-6C19H16N4OS
- 2-(1H-Benzo[d]imidazol-1-yl)-N-(2-(2-methylthiazol-4-yl)phenyl)acetamide1797028-39-7C19H16N4OS
- N-(1H-Benzimidazol-2-ylmethyl)-2-methyl-5-phenyl-1,3-thiazole-4-carboxamide1574518-49-2C19H16N4OS
- 2-(1H-Benzo[d]imidazol-1-yl)-N-((2-(thiophen-2-yl)pyridin-4-yl)methyl)acetamide2034270-75-0C19H16N4OS
- 2-Methyl-N-((5-(thiophen-2-yl)pyridin-3-yl)methyl)imidazo[1,2-a]pyridine-3-carboxamide2034271-18-4C19H16N4OS
- 2-(1H-Benzo[d]imidazol-1-yl)-N-((5-(thiophen-2-yl)pyridin-3-yl)methyl)acetamide2034485-76-0C19H16N4OS
- 5-Cyano-1,4-dihydro-6-mercapto-2-methyl-N-phenyl[4,4a(2)-bipyridine]-3-carboxamide201274-10-4C19H16N4OS
- 1-(Indolin-1-yl)-2-((6-(pyridin-4-yl)pyridazin-3-yl)thio)ethanone872987-42-3C19H16N4OS
- 1-(1-Methyl-1H-indol-3-yl)-2-[(1-phenyl-1H-1,2,4-triazol-3-yl)sulfanyl]ethanone929827-88-3C19H16N4OS
- 5-(Allylthio)-2-(2-methoxyphenyl)[1,2,4]triazolo[1,5-c]quinazoline925182-33-8C19H16N4OS
- N-(3-(Benzo[d]thiazol-2-yl)phenyl)-1,5-dimethyl-1H-pyrazole-3-carboxamide1013795-52-2C19H16N4OS
- 4-[4-(4-Methoxyphenyl)-1,3-thiazol-2-yl]-5-methyl-1-phenyl-1H-1,2,3-triazole1105246-43-2C19H16N4OS
- N-[2-(1H-Indol-3-yl)ethyl]-4-phenylthiadiazole-5-carboxamide1190279-54-9C19H16N4OS
- 1,4-Dimethyl-N-{5-thia-3-azatetracyclo[6.6.1.0^{2,6}.0^{11,15}]pentadeca-1(15),2(6),3,7,11,13-hexaen-4-yl}-1H-pyrazole-3-carboxamide1203210-95-0C19H16N4OS
- 1-(3-(1H-Benzo[d]imidazol-2-yl)phenyl)-3-(thiophen-2-ylmethyl)urea1203183-81-6C19H16N4OS
- 1-Benzyl-N-(5-methyl-1,3,4-thiadiazol-2-yl)-1H-indole-3-carboxamide1282100-60-0C19H16N4OS
- N-(5-Benzyl-1,3,4-thiadiazol-2-yl)-2-(1H-indol-1-yl)acetamide1282143-45-6C19H16N4OS
- 3-(1H-Indol-1-yl)-N-(4-(pyridin-3-yl)thiazol-2-yl)propanamide1324090-92-7C19H16N4OS
- 2-(4-Methyl-1H-indol-1-yl)-N-(4-(pyridin-3-yl)thiazol-2-yl)acetamide1324060-60-7C19H16N4OS
- 2-(1H-Benzo[d]imidazol-1-yl)-N-((5-(thiophen-3-yl)pyridin-3-yl)methyl)acetamide1787879-22-4C19H16N4OS
- 11-(1-Benzothiophene-2-carbonyl)-4-methyl-2,3,7,11-tetraazatricyclo[7.4.0.0^{2,6}]trideca-1(9),3,5,7-tetraene1797735-80-8C19H16N4OS
- 1,5-Dimethyl-N-(4-(naphthalen-2-yl)thiazol-2-yl)-1H-pyrazole-3-carboxamide1013772-05-8C19H16N4OS
- N-(4,5-Dihydroacenaphtho[5,4-d]thiazol-8-yl)-1,5-dimethyl-1H-pyrazole-3-carboxamide1013759-22-2C19H16N4OS
- 2-[[5-Phenyl-2-(2-pyridinyl)thieno[2,3-d]pyrimidin-4-yl]amino]ethanol1111534-87-2C19H16N4OS
- 2-(1-Methyl-1H-indol-2-yl)-N-(pyridin-4-ylmethyl)thiazole-4-carboxamide1172541-74-0C19H16N4OS
- 2-(((6-(4-Methoxyphenyl)pyridazin-3-yl)thio)methyl)imidazo[1,2-a]pyridine1207038-45-6C19H16N4OS
- N-(2-(Benzo[d]thiazol-2-yl)phenyl)-1,4-dimethyl-1H-pyrazole-3-carboxamide1203327-37-0C19H16N4OS
- 3-(4-Cyanoanilino)-N-(3-cyanothiolan-3-yl)benzamide1385279-70-8C19H16N4OS
- N-(2-(Imidazo[1,2-a]pyridin-2-yl)phenyl)-2,4-dimethylthiazole-5-carboxamide1798514-25-6C19H16N4OS
- 2-Methyl-N-{[2-(thiophen-2-yl)pyridin-3-yl]methyl}imidazo[1,2-a]pyridine-3-carboxamide2034450-19-4C19H16N4OS
- 12-(2-Phenyl-1,3-thiazole-4-carbonyl)-4,6,12-triazatricyclo[7.2.1.0^{2,7}]dodeca-2(7),3,5-triene1903848-34-9C19H16N4OS
- N-((1-Methyl-3-(pyridin-3-yl)-1H-pyrazol-5-yl)methyl)benzo[b]thiophene-2-carboxamide2034376-25-3C19H16N4OS
- N-((6-(1-Methyl-1H-pyrazol-4-yl)pyridin-3-yl)methyl)benzo[b]thiophene-2-carboxamide2034233-10-6C19H16N4OS
- N-((5-(1-Methyl-1H-pyrazol-4-yl)pyridin-3-yl)methyl)benzo[b]thiophene-2-carboxamide2034383-10-1C19H16N4OS
- N-(1-Phenyl-2-(2H-1,2,3-triazol-2-yl)ethyl)benzo[b]thiophene-2-carboxamide2320859-76-3C19H16N4OS
- 2-(1H-Indol-3-yl)-N-((3-(thiophen-3-yl)pyrazin-2-yl)methyl)acetamide2034425-37-9C19H16N4OS
- N-((6-(1-Methyl-1H-pyrazol-5-yl)pyridin-3-yl)methyl)benzo[b]thiophene-2-carboxamide2034369-00-9C19H16N4OS
- 2-(1H-Indol-1-yl)-N-((3-(thiophen-2-yl)pyrazin-2-yl)methyl)acetamide2034365-72-3C19H16N4OS
- 2-(1H-Indol-3-yl)-N-((3-(thiophen-2-yl)pyrazin-2-yl)methyl)acetamide2034389-42-7C19H16N4OS
- 2-(Naphthalen-1-yl)-N-{[1-(thiophen-3-yl)-1H-1,2,3-triazol-4-yl]methyl}acetamide2034613-51-7C19H16N4OS
- 2-(1H-Indol-1-yl)-N-((3-(thiophen-3-yl)pyrazin-2-yl)methyl)acetamide2034425-28-8C19H16N4OS
- 3-(4-Cyanophenyl)-N-((3-(thiophen-2-yl)pyrazin-2-yl)methyl)propanamide2319838-75-8C19H16N4OS
- N-(1-Benzyl-1H-indol-4-yl)-4-methyl-1,2,3-thiadiazole-5-carboxamide1374516-45-6C19H16N4OS
- N-{2-[4-(Pyridin-4-yl)-1H-pyrazol-1-yl]ethyl}-1-benzothiophene-2-carboxamide2034506-90-4C19H16N4OS
- 2-(Naphthalen-1-yl)-N-{[1-(thiophen-2-yl)-1H-1,2,3-triazol-4-yl]methyl}acetamide2034533-56-5C19H16N4OS
Frequently asked questions
What is the molar mass of C19H16N4OS?
The molar mass of C19H16N4OS is 348.42 g/mol, calculated from standard atomic weights for 19 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms, 1 oxygen atom and 1 sulfur atom. The monoisotopic mass is 348.1045 Da.
How many compounds have the formula C19H16N4OS?
CompoundList lists 112 compounds with the molecular formula C19H16N4OS, including 3-Methyl-N-(6-methylpyridin-2-yl)-6-phenylimidazo[2,1-b][1,3]thiazole-2-carboxamide, 9-Phenyl-6-(2-thienyl)-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one, 1-(Indolin-1-yl)-2-((6-(pyridin-2-yl)pyridazin-3-yl)thio)ethanone. 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 C19H16N4OS?
C19H16N4OS has a degree of unsaturation of 14. 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.