Molecular formula
C18H21N3O2S
280 compounds have this formula on CompoundList.
- Molar mass
- 343.44g/mol
- Monoisotopic mass
- 346.1543Da
- Atoms
- 45
- Elements
- 5
- Rings plus double bonds
- 10
The formula C18H21N3O2S describes a molecule made of 18 carbon atoms, 21 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 × 1862.95%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 216.16%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 312.24%14.007 × 3 = 42.021 g/mol
- O Oxygen × 29.32%15.999 × 2 = 31.998 g/mol
- S Sulfur × 19.33%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C18H21N3O2S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 200 of 280 compounds
2-((6-(4-Ethylphenyl)pyridazin-3-yl)thio)-1-morpholinoethanone
CAS 893982-65-5C18H21N3O2S
(E)-2-(4-Acetylpiperazin-1-yl)-5-(4-ethylbenzylidene)thiazol-4(5H)-one
CAS 877789-43-0C18H21N3O2S
![1-Acetyl-N-[4-(4-methylphenyl)-1,3-thiazol-2-yl]piperidine-4-carboxamide chemical structure, C18H21N3O2S, CAS 915907-77-6](/s/NNSBVJWCONHRGM-UHFFFAOYSA-N.svg)
1-Acetyl-N-[4-(4-methylphenyl)-1,3-thiazol-2-yl]piperidine-4-carboxamide
CAS 915907-77-6C18H21N3O2S
N-(4-Isobutoxybenzoyl)-N'-(3-pyridinylmethyl)thiourea
CAS 940506-83-2C18H21N3O2S
2-((1-(2-(2,6-Dimethylmorpholino)-2-oxoethyl)-1H-indol-3-yl)thio)acetonitrile
CAS 893999-66-1C18H21N3O2S
(4-(5-Cyclopropyl-1,3,4-thiadiazol-2-yl)piperidin-1-yl)(2-methoxyphenyl)methanone
CAS 1203423-85-1C18H21N3O2S
![1-[4-(5-Methyl-1,3,4-thiadiazol-2-yl)piperidin-1-yl]-4-phenylbutane-1,4-dione chemical structure, C18H21N3O2S, CAS 1396888-77-9](/s/CSPVUJLIQOJFAG-UHFFFAOYSA-N.svg)
1-[4-(5-Methyl-1,3,4-thiadiazol-2-yl)piperidin-1-yl]-4-phenylbutane-1,4-dione
CAS 1396888-77-9C18H21N3O2S
2-(Benzylthio)-1-(4-(pyrazin-2-yloxy)piperidin-1-yl)ethanone
CAS 1421478-13-8C18H21N3O2S
2-(Benzylthio)-1-(4-(pyridazin-3-yloxy)piperidin-1-yl)ethanone
CAS 1796968-57-4C18H21N3O2S
3-(Phenylthio)-1-(4-(pyridazin-3-yloxy)piperidin-1-yl)propan-1-one
CAS 1797536-17-4C18H21N3O2S
(4-((6-Methylpyridazin-3-yl)oxy)piperidin-1-yl)(2-(methylthio)phenyl)methanone
CAS 1797266-78-4C18H21N3O2S
![2-(Cyclopentylsulfanyl)-N-[2-(1-methyl-6-oxo-1,6-dihydropyridazin-3-yl)phenyl]acetamide chemical structure, C18H21N3O2S, CAS 1797247-21-2](/s/MLQMITABBMPYFM-UHFFFAOYSA-N.svg)
2-(Cyclopentylsulfanyl)-N-[2-(1-methyl-6-oxo-1,6-dihydropyridazin-3-yl)phenyl]acetamide
CAS 1797247-21-2C18H21N3O2S
2-(3,5-Dimethylisoxazol-4-yl)-N-((1-methyl-1H-pyrrol-2-yl)methyl)-N-(thiophen-2-ylmethyl)acetamide
CAS 1797613-02-5C18H21N3O2S
![1-Acetyl-N-{[5-(thiophen-3-yl)pyridin-3-yl]methyl}piperidine-4-carboxamide chemical structure, C18H21N3O2S, CAS 1795480-36-2](/s/ZJGOQRDZOVMWFK-UHFFFAOYSA-N.svg)
1-Acetyl-N-{[5-(thiophen-3-yl)pyridin-3-yl]methyl}piperidine-4-carboxamide
CAS 1795480-36-2C18H21N3O2S
![(6,7-Dihydro-5H-pyrazolo[5,1-b][1,3]oxazin-3-yl)(7-phenyl-1,4-thiazepan-4-yl)methanone chemical structure, C18H21N3O2S, CAS 1798529-15-3](/s/KOKAAAOKOHPDLD-UHFFFAOYSA-N.svg)
(6,7-Dihydro-5H-pyrazolo[5,1-b][1,3]oxazin-3-yl)(7-phenyl-1,4-thiazepan-4-yl)methanone
CAS 1798529-15-3C18H21N3O2S
2-(2-Oxo-2-(7-(o-tolyl)-1,4-thiazepan-4-yl)ethyl)pyridazin-3(2H)-one
CAS 1705092-09-6C18H21N3O2S
2-(Methylthio)-N-(pyridin-3-yl(tetrahydro-2H-pyran-4-yl)methyl)nicotinamide
CAS 2034456-34-1C18H21N3O2S
1-Acetyl-N-((2-(thiophen-3-yl)pyridin-3-yl)methyl)piperidine-4-carboxamide
CAS 2034433-77-5C18H21N3O2S
![1-Acetyl-N-{[5-(thiophen-2-yl)pyridin-3-yl]methyl}piperidine-4-carboxamide chemical structure, C18H21N3O2S, CAS 2034410-32-5](/s/FBPDQICJCXTZBF-UHFFFAOYSA-N.svg)
1-Acetyl-N-{[5-(thiophen-2-yl)pyridin-3-yl]methyl}piperidine-4-carboxamide
CAS 2034410-32-5C18H21N3O2S
2-Methyl-N-(4-(methylthio)benzyl)-3-oxo-2,3,5,6,7,8-hexahydrocinnoline-6-carboxamide
CAS 2034259-74-8C18H21N3O2S
![5-Amino-4-(4,5-dimethyl-1,3-thiazol-2-yl)-1-[2-(4-methoxyphenyl)ethyl]-1,2-dihydro-3H-pyrrol-3-one chemical structure, C18H21N3O2S, CAS 951968-21-1](/s/YTOOHXUQGKWNNR-UHFFFAOYSA-N.svg)
5-Amino-4-(4,5-dimethyl-1,3-thiazol-2-yl)-1-[2-(4-methoxyphenyl)ethyl]-1,2-dihydro-3H-pyrrol-3-one
CAS 951968-21-1C18H21N3O2S
![5-Amino-1-isobutyl-4-[4-(4-methoxyphenyl)-1,3-thiazol-2-yl]-1,2-dihydro-3H-pyrrol-3-one chemical structure, C18H21N3O2S, CAS 929826-89-1](/s/KVEPTQZOPSVJHE-UHFFFAOYSA-N.svg)
5-Amino-1-isobutyl-4-[4-(4-methoxyphenyl)-1,3-thiazol-2-yl]-1,2-dihydro-3H-pyrrol-3-one
CAS 929826-89-1C18H21N3O2S
1-Acetyl-N-(5-methyl-4-phenyl-1,3-thiazol-2-yl)piperidine-4-carboxamide
CAS 915917-05-4C18H21N3O2S
![N-[6-Oxo-6-(pyridin-3-ylamino)hexyl]-2-sulfanylbenzamide chemical structure, C18H21N3O2S, CAS 1113025-86-7](/s/NJJPJDCYPCCRLT-UHFFFAOYSA-N.svg)
N-[6-Oxo-6-(pyridin-3-ylamino)hexyl]-2-sulfanylbenzamide
CAS 1113025-86-7C18H21N3O2S
- N-(6-{[2-(2,4-Dimethylphenyl)-2-oxoethyl]sulfanyl}pyridazin-3-yl)-2-methylpropanamide1021214-69-6C18H21N3O2S
- N-(4-(2-(Cyclohexylamino)-2-oxoethyl)thiazol-2-yl)benzamide946203-00-5C18H21N3O2S
- N-[2-(Cyclohex-1-en-1-yl)ethyl]-4-(4-methoxyphenyl)-1,2,3-thiadiazole-5-carboxamide1190258-64-0C18H21N3O2S
- 1-(4-(2-Oxo-2-(pyrrolidin-1-yl)ethyl)phenyl)-3-(thiophen-2-ylmethyl)urea1207042-70-3C18H21N3O2S
- 1-(2-Isobutyryl-1,2,3,4-tetrahydroisoquinolin-7-yl)-3-(thiophen-2-yl)urea1211252-51-5C18H21N3O2S
- N-Benzyl-N-[4-methyl-5-(1-pyrrolidinylcarbonyl)-1,3-thiazol-2-yl]acetamide1224166-09-9C18H21N3O2S
- N-(2-(Cyclohex-1-en-1-yl)ethyl)-4-oxo-4,6,7,8-tetrahydrocyclopenta[4,5]thiazolo[3,2-a]pyrimidine-3-carboxamide1215602-39-3C18H21N3O2S
- 4-(1-(2-Methoxyethyl)-1H-indol-3-yl)-N-(thiazol-2-yl)butanamide1401595-52-5C18H21N3O2S
- 3-(Phenylthio)-1-(4-(pyrazin-2-yloxy)piperidin-1-yl)propan-1-one1421482-30-5C18H21N3O2S
- 4-Oxo-4-phenyl-N-(1-(thiazol-2-yl)piperidin-4-yl)butanamide1448033-31-5C18H21N3O2S
- N-(3-Oxo-2,3,5,6,7,8-hexahydrocinnolin-6-yl)-1-(thiophen-2-yl)cyclopentanecarboxamide1903245-96-4C18H21N3O2S
- Omeprazole impurity 342243644-61-1C18H21N3O2S
- N,N-Diethyl-3-(8-methylimidazo[1,2-a]pyridin-2-yl)benzenesulfonamide720671-11-4C18H21N3O2S
- (E)-N-[[4-(Diethylamino)phenyl]carbamothioyl]-3-(furan-2-yl)prop-2-enamide429643-78-7C18H21N3O2S
- 4-Ethyl-2-[4-(4-methyl-1,3-thiazol-2-yl)-1H-pyrazol-3-yl]-5-propoxyphenol312601-81-3C18H21N3O2S
- 1-(4-Methoxyphenyl)-4-[2-(methylsulfanyl)pyridine-3-carbonyl]piperazine771515-25-4C18H21N3O2S
- 4-Butoxy-N-[(4-methylpyridin-2-yl)carbamothioyl]benzamide428479-19-0C18H21N3O2S
- 2-(2-Methylpropanamido)-N-[(pyridin-3-yl)methyl]-4H,5H,6H-cyclopenta[b]thiophene-3-carboxamide874140-06-4C18H21N3O2S
- N-[1-(Furan-2-ylmethylcarbamothioyl)piperidin-4-yl]benzamide606112-39-4C18H21N3O2S
- 2-[(2-Oxo-1,5,6,7-tetrahydrocyclopenta[d]pyrimidin-4-yl)sulfanyl]-N-(4-propan-2-ylphenyl)acetamide946269-10-9C18H21N3O2S
- N-(2,3-Dimethylphenyl)-2-[(2-oxo-5,6,7,8-tetrahydro-1H-quinazolin-4-yl)sulfanyl]acetamide1001519-87-4C18H21N3O2S
- N-(3,5-Dimethylphenyl)-2-[(2-oxo-5,6,7,8-tetrahydro-1H-quinazolin-4-yl)sulfanyl]acetamide932961-28-9C18H21N3O2S
- N-(2,5-Dimethylphenyl)-2-[(2-oxo-5,6,7,8-tetrahydro-1H-quinazolin-4-yl)sulfanyl]acetamide946217-74-9C18H21N3O2S
- N-(4-Ethylphenyl)-2-((2-oxo-1,2,5,6,7,8-hexahydroquinazolin-4-yl)thio)acetamide933203-64-6C18H21N3O2S
- N-(2,4-Dimethylphenyl)-2-[(2-oxo-5,6,7,8-tetrahydro-1H-quinazolin-4-yl)sulfanyl]acetamide946269-65-4C18H21N3O2S
- 2-((2-Oxo-1,2,5,6,7,8-hexahydroquinazolin-4-yl)thio)-N-phenethylacetamide1001519-98-7C18H21N3O2S
- 2-{[(2-Phenylethyl)carbamoyl]amino}-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide903195-06-2C18H21N3O2S
- N-(4-Acetylphenyl)-3-[4,6-dimethyl-2-(methylsulfanyl)pyrimidin-5-yl]propanamide949799-43-3C18H21N3O2S
- Benzenesulfonamide, 4-butyl-N-(1H-pyrrolo[2,3-b]pyridin-3-ylmethyl)-858117-35-8C18H21N3O2S
- 2-{7-Ethyl-5-oxo-2H,3H,5H-[1,3]thiazolo[3,2-a]pyrimidin-3-yl}-N-[(4-methylphenyl)methyl]acetamide952993-75-8C18H21N3O2S
- 1-((5-Oxo-1-(p-tolyl)pyrrolidin-3-yl)methyl)-3-(thiophen-2-ylmethyl)urea954660-48-1C18H21N3O2S
- 1-Acetyl-N-[(2-phenyl-1,3-thiazol-4-yl)methyl]piperidine-4-carboxamide908516-51-8C18H21N3O2S
- N1-ethyl-N2-(2-(indolin-1-yl)-2-(thiophen-2-yl)ethyl)oxalamide898452-32-9C18H21N3O2S
- N1-(2-(3,4-dihydroisoquinolin-2(1H)-yl)-2-(thiophen-2-yl)ethyl)-N2-methyloxalamide904278-87-1C18H21N3O2S
- 1-(1-Isobutyryl-1,2,3,4-tetrahydroquinolin-6-yl)-3-(thiophen-2-yl)urea1203034-97-2C18H21N3O2S
- 2-(6-(4-Ethoxyphenyl)imidazo[2,1-b]thiazol-3-yl)-N-isopropylacetamide897461-45-9C18H21N3O2S
- N-(4-(2-(Indolin-1-yl)-2-oxoethyl)thiazol-2-yl)pivalamide921801-39-0C18H21N3O2S
- N-(4-Isopropylphenyl)-2-(7-methyl-5-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidin-3-yl)acetamide946346-14-1C18H21N3O2S
- 2-(1-Ethyl-1H-indol-2-yl)-N-(1-hydroxybutan-2-yl)thiazole-4-carboxamide1171421-00-3C18H21N3O2S
- 4-(5-Cyclopropyl-1,3,4-thiadiazol-2-yl)-1-(4-methoxybenzoyl)piperidine1172536-32-1C18H21N3O2S
- 1-{6-[(2,5-Dimethylphenyl)sulfanyl]pyrimidin-4-yl}piperidine-4-carboxylic acid1113109-41-3C18H21N3O2S
- Cyclopropyl(3-(5-(4-methoxyphenyl)-1,3,4-thiadiazol-2-yl)piperidin-1-yl)methanone1203347-88-9C18H21N3O2S
- N-(6-Ethoxy-1,3-benzothiazol-2-yl)-1-prop-2-ynylpiperidine-4-carboxamide1240937-22-7C18H21N3O2S
- N-(1-Cyanocyclobutyl)-N-methyl-1-[4-(methylsulfanyl)phenyl]-5-oxopyrrolidine-3-carboxamide1222970-46-8C18H21N3O2S
- N-Cyclopentyl-2-{3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetamide1246047-66-4C18H21N3O2S
- 4-Methyl-N-((1-nicotinoylpiperidin-4-yl)methyl)thiophene-2-carboxamide1396849-42-5C18H21N3O2S
- N-(4-(Piperidin-1-yl)but-2-yn-1-yl)quinoline-8-sulfonamide1396783-72-4C18H21N3O2S
- 4-(tert-Butyl)-N-(4-oxo-5,6,7,8-tetrahydro-4H-thiazolo[5,4-c]azepin-2-yl)benzamide1798042-09-7C18H21N3O2S
- N-(4-(3-Methoxypyrrolidin-1-yl)phenyl)-2-(pyridin-4-ylthio)acetamide1797082-76-8C18H21N3O2S
- N-(4-Oxo-5,6,7,8-tetrahydro-4H-thiazolo[5,4-c]azepin-2-yl)-5-phenylpentanamide1797027-77-0C18H21N3O2S
- (6,7-Dihydro-5H-pyrazolo[5,1-b][1,3]oxazin-2-yl)(7-phenyl-1,4-thiazepan-4-yl)methanone1797896-40-2C18H21N3O2S
- N-(3-(1H-Pyrrolo[2,3-b]pyridin-1-yl)propyl)-2,4-dimethylbenzenesulfonamide1797957-25-5C18H21N3O2S
- N-(2-(Benzo[b]thiophen-2-yl)-2-hydroxypropyl)-1,3,5-trimethyl-1H-pyrazole-4-carboxamide2034353-70-1C18H21N3O2S
- N-[(1-Methyl-3-phenylpyrazol-4-yl)methyl]-1,1-dioxo-N-prop-2-ynylthiolan-3-amine1645401-51-9C18H21N3O2S
- 1-Acetyl-N-((2-(thiophen-2-yl)pyridin-3-yl)methyl)piperidine-4-carboxamide2034444-17-0C18H21N3O2S
- (3-(Pyrazin-2-yloxy)pyrrolidin-1-yl)(1-(thiophen-2-yl)cyclopentyl)methanone2034321-21-4C18H21N3O2S
- 2-(1-(Pyridin-3-ylsulfonyl)pyrrolidin-3-yl)-1,2,3,4-tetrahydroisoquinoline2034291-56-8C18H21N3O2S
- 12-(2,4,6-Trimethylbenzenesulfonyl)-4,6,12-triazatricyclo[7.2.1.0^{2,7}]dodeca-2(7),3,5-triene1904062-80-1C18H21N3O2S
- 1-Acetyl-N-{[2-(thiophen-2-yl)pyridin-4-yl]methyl}piperidine-4-carboxamide1903706-52-4C18H21N3O2S
- (3-((4,6-Dimethylpyrimidin-2-yl)oxy)pyrrolidin-1-yl)(2-(methylthio)phenyl)methanone2034434-33-6C18H21N3O2S
- N-(2-(4-Cyclopropyl-6-oxopyrimidin-1(6H)-yl)ethyl)-3-(phenylthio)propanamide2034572-01-3C18H21N3O2S
- 1-(2-(Benzofuran-2-yl)-2-(dimethylamino)ethyl)-3-(thiophen-2-ylmethyl)urea2034466-92-5C18H21N3O2S
- N-(2-(4-Cyclopropyl-6-oxopyrimidin-1(6H)-yl)ethyl)-2-(ethylthio)benzamide2034536-71-3C18H21N3O2S
- 3-(Pyridin-3-yloxy)-N-[(thiophen-2-yl)methyl]-8-azabicyclo[3.2.1]octane-8-carboxamide2320458-45-3C18H21N3O2S
- N-(4-Cyanothian-4-yl)-3-(2-oxo-1,2,3,4-tetrahydroquinolin-3-yl)propanamide1825529-37-0C18H21N3O2S
- N-[2-(Diethylcarbamoyl)phenyl]-6-(methylsulfanyl)pyridine-3-carboxamide2094289-86-6C18H21N3O2S
- 2-Cyclopropyl-N-[(4-methoxyphenyl)methyl]-4-methyl-6-(methylsulfanyl)pyrimidine-5-carboxamide2094576-86-8C18H21N3O2S
- 2-(Benzylthio)-1-(3-(pyrimidin-2-yloxy)piperidin-1-yl)ethanone2034278-31-2C18H21N3O2S
- 3-(Phenylthio)-1-(3-(pyrimidin-4-yloxy)piperidin-1-yl)propan-1-one2034471-91-3C18H21N3O2S
- N-[2-(3,5-Dimethyl-1H-pyrazol-1-yl)-2-(thiophen-3-yl)ethyl]-2,5-dimethylfuran-3-carboxamide2034594-35-7C18H21N3O2S
- N-{2-[3,5-Dimethyl-4-(thiophen-3-yl)-1H-pyrazol-1-yl]ethyl}-2,5-dimethylfuran-3-carboxamide2034375-47-6C18H21N3O2S
- (3-(Pyrimidin-4-yloxy)pyrrolidin-1-yl)(1-(thiophen-2-yl)cyclopentyl)methanone2034572-03-5C18H21N3O2S
- 2-(Benzylthio)-1-(3-((2-methylpyrimidin-4-yl)oxy)pyrrolidin-1-yl)ethanone2034572-84-2C18H21N3O2S
- 2-(Benzylthio)-1-(3-(pyrimidin-4-yloxy)piperidin-1-yl)ethanone2034332-00-6C18H21N3O2S
- N-[2-(3,5-Dimethyl-1H-pyrazol-1-yl)-2-(thiophen-2-yl)ethyl]-2,5-dimethylfuran-3-carboxamide2034268-76-1C18H21N3O2S
- N-(2-(3,5-Dimethyl-4-(thiophen-2-yl)-1H-pyrazol-1-yl)ethyl)-2,5-dimethylfuran-3-carboxamide2034323-55-0C18H21N3O2S
Frequently asked questions
What is the molar mass of C18H21N3O2S?
The molar mass of C18H21N3O2S is 343.44 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms, 2 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 346.1543 Da.
How many compounds have the formula C18H21N3O2S?
CompoundList lists 280 compounds with the molecular formula C18H21N3O2S, including 2-((6-(4-Ethylphenyl)pyridazin-3-yl)thio)-1-morpholinoethanone, (E)-2-(4-Acetylpiperazin-1-yl)-5-(4-ethylbenzylidene)thiazol-4(5H)-one, 1-Acetyl-N-[4-(4-methylphenyl)-1,3-thiazol-2-yl]piperidine-4-carboxamide. 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 C18H21N3O2S?
C18H21N3O2S has a degree of unsaturation of 10. 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.