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 201 to 280 of 280 compounds
![3-(3-Methylthiophen-2-yl)-N-{[2-(2-oxopyrrolidin-1-yl)pyridin-4-yl]methyl}propanamide chemical structure, C18H21N3O2S, CAS 2034524-29-1](/s/MZANRHPEEXYZHD-UHFFFAOYSA-N.svg)
3-(3-Methylthiophen-2-yl)-N-{[2-(2-oxopyrrolidin-1-yl)pyridin-4-yl]methyl}propanamide
CAS 2034524-29-1C18H21N3O2S
N-(2-(3-Cyclopropyl-6-oxopyridazin-1(6H)-yl)ethyl)-3-(phenylthio)propanamide
CAS 2034533-60-1C18H21N3O2S
2-(Benzylthio)-N-(2-(3-cyclopropyl-6-oxopyridazin-1(6H)-yl)ethyl)acetamide
CAS 2034533-96-3C18H21N3O2S
N-(2-(3-Cyclopropyl-6-oxopyridazin-1(6H)-yl)ethyl)-2-(ethylthio)benzamide
CAS 2034303-87-0C18H21N3O2S
![2-(Benzylthio)-N-(2-(3-oxo-3,5,6,7-tetrahydro-2H-cyclopenta[c]pyridazin-2-yl)ethyl)acetamide chemical structure, C18H21N3O2S, CAS 2034615-05-7](/s/RMGBKDGVPJOXGN-UHFFFAOYSA-N.svg)
2-(Benzylthio)-N-(2-(3-oxo-3,5,6,7-tetrahydro-2H-cyclopenta[c]pyridazin-2-yl)ethyl)acetamide
CAS 2034615-05-7C18H21N3O2S
![N-(2-(3-Oxo-3,5,6,7-tetrahydro-2H-cyclopenta[c]pyridazin-2-yl)ethyl)-3-(phenylthio)propanamide chemical structure, C18H21N3O2S, CAS 2097927-20-1](/s/WIJIRVKNGSYRAS-UHFFFAOYSA-N.svg)
N-(2-(3-Oxo-3,5,6,7-tetrahydro-2H-cyclopenta[c]pyridazin-2-yl)ethyl)-3-(phenylthio)propanamide
CAS 2097927-20-1C18H21N3O2S
![4-[4,5-Dihydro-3-[4-(1-methylethyl)phenyl]-1H-pyrazol-1-yl]benzenesulfonamide chemical structure, C18H21N3O2S, CAS 1089330-61-9](/s/PMKHYZHXJJFAGM-UHFFFAOYSA-N.svg)
4-[4,5-Dihydro-3-[4-(1-methylethyl)phenyl]-1H-pyrazol-1-yl]benzenesulfonamide
CAS 1089330-61-9C18H21N3O2S
![(1R,5S)-3-(1H-Pyrazol-1-yl)-8-(((E)-styryl)sulfonyl)-8-azabicyclo[3.2.1]octane chemical structure, C18H21N3O2S, CAS 2321352-75-2](/s/FFLVMOKOMXEIAU-FMIVXFBMSA-N.svg)
(1R,5S)-3-(1H-Pyrazol-1-yl)-8-(((E)-styryl)sulfonyl)-8-azabicyclo[3.2.1]octane
CAS 2321352-75-2C18H21N3O2S
Hydrazinecarbothioamide, 2-((2-hydroxyphenyl)methylene)-N-((4-(1-methylethoxy)phenyl)methyl)-
CAS 186453-53-2C18H21N3O2S
![N-{4-[(Piperidin-1-ylacetyl)amino]phenyl}thiophene-2-carboxamide chemical structure, C18H21N3O2S, CAS 562867-12-3](/s/HLTYIFHDEHKXKD-UHFFFAOYSA-N.svg)
N-{4-[(Piperidin-1-ylacetyl)amino]phenyl}thiophene-2-carboxamide
CAS 562867-12-3C18H21N3O2S
![N-[4-(Dimethylamino)phenyl]-N'-(3-ethoxybenzoyl)thiourea chemical structure, C18H21N3O2S, CAS 428834-34-8](/s/GVTZCMYEJHWRIX-UHFFFAOYSA-N.svg)
N-[4-(Dimethylamino)phenyl]-N'-(3-ethoxybenzoyl)thiourea
CAS 428834-34-8C18H21N3O2S
![4-Butoxy-N-[(6-methylpyridin-2-yl)carbamothioyl]benzamide chemical structure, C18H21N3O2S, CAS 371139-11-6](/s/AUPVOQYGPSPXFS-UHFFFAOYSA-N.svg)
4-Butoxy-N-[(6-methylpyridin-2-yl)carbamothioyl]benzamide
CAS 371139-11-6C18H21N3O2S
2-Propanol, 1-((1-methyl-2-propynyl)amino)-3-(2-(2-(5-methyl-1,3,4-thiadiazol-2-yl)ethenyl)phenoxy)-
CAS 72578-11-1C18H21N3O2S
![1-(2-Methoxyphenyl)-4-[2-(methylsulfanyl)pyridine-3-carbonyl]piperazine chemical structure, C18H21N3O2S, CAS 924045-51-2](/s/NHWJAILVRLYSRB-UHFFFAOYSA-N.svg)
1-(2-Methoxyphenyl)-4-[2-(methylsulfanyl)pyridine-3-carbonyl]piperazine
CAS 924045-51-2C18H21N3O2S
![N-[4-(Diethylcarbamoyl)phenyl]-2-(methylsulfanyl)pyridine-3-carboxamide chemical structure, C18H21N3O2S, CAS 924083-55-6](/s/ODFLWABPFHPBEA-UHFFFAOYSA-N.svg)
N-[4-(Diethylcarbamoyl)phenyl]-2-(methylsulfanyl)pyridine-3-carboxamide
CAS 924083-55-6C18H21N3O2S
![4-Methyl-5-(5-{[5-methyl-2-(propan-2-yl)phenoxy]methyl}furan-2-yl)-4H-1,2,4-triazole-3-thiol chemical structure, C18H21N3O2S, CAS 847504-56-7](/s/RLQNYHGBIWRCPV-UHFFFAOYSA-N.svg)
4-Methyl-5-(5-{[5-methyl-2-(propan-2-yl)phenoxy]methyl}furan-2-yl)-4H-1,2,4-triazole-3-thiol
CAS 847504-56-7C18H21N3O2S
![N-[3-(Diethylcarbamoyl)phenyl]-2-(methylsulfanyl)pyridine-3-carboxamide chemical structure, C18H21N3O2S, CAS 924063-42-3](/s/XGLHAFIJOCQSHL-UHFFFAOYSA-N.svg)
N-[3-(Diethylcarbamoyl)phenyl]-2-(methylsulfanyl)pyridine-3-carboxamide
CAS 924063-42-3C18H21N3O2S
![2-[(Cyclohexylmethylamino)methyl]-5-(2-furyl)thiopheno[2,3-d]pyrimidin-4-ol chemical structure, C18H21N3O2S, CAS 924061-13-2](/s/DVLIYZSMEWFRDP-UHFFFAOYSA-N.svg)
2-[(Cyclohexylmethylamino)methyl]-5-(2-furyl)thiopheno[2,3-d]pyrimidin-4-ol
CAS 924061-13-2C18H21N3O2S
![N-(3-Acetylphenyl)-3-[4,6-dimethyl-2-(methylsulfanyl)pyrimidin-5-yl]propanamide chemical structure, C18H21N3O2S, CAS 930650-64-9](/s/DKYLWXVEIVGHQH-UHFFFAOYSA-N.svg)
N-(3-Acetylphenyl)-3-[4,6-dimethyl-2-(methylsulfanyl)pyrimidin-5-yl]propanamide
CAS 930650-64-9C18H21N3O2S
![N-(1-Cyanocyclopentyl)-2-{[(furan-2-yl)methyl][(thiophen-2-yl)methyl]amino}acetamide chemical structure, C18H21N3O2S, CAS 930900-02-0](/s/JZQRZIOIMGBPHP-UHFFFAOYSA-N.svg)
N-(1-Cyanocyclopentyl)-2-{[(furan-2-yl)methyl][(thiophen-2-yl)methyl]amino}acetamide
CAS 930900-02-0C18H21N3O2S
![N-[1-(1H-Benzimidazol-2-yl)-2-methylpropyl]-4-methylbenzenesulfonamide chemical structure, C18H21N3O2S, CAS 929965-52-6](/s/UPNHMDZBIWUHLU-UHFFFAOYSA-N.svg)
N-[1-(1H-Benzimidazol-2-yl)-2-methylpropyl]-4-methylbenzenesulfonamide
CAS 929965-52-6C18H21N3O2S
![N-(4-Isopropylphenyl)-2-(6-methyl-5-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidin-3-yl)acetamide chemical structure, C18H21N3O2S, CAS 946342-42-3](/s/WMQRZFFZEUEKOW-UHFFFAOYSA-N.svg)
N-(4-Isopropylphenyl)-2-(6-methyl-5-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidin-3-yl)acetamide
CAS 946342-42-3C18H21N3O2S
N-(3-Cyanothiolan-3-yl)-4-(2-oxo-1,2,3,4-tetrahydroquinolin-1-yl)butanamide
CAS 1333828-41-3C18H21N3O2S
![2-[(4-Ethoxyethoxy-3-methyl-2-pyridinyl)-methylthio]-benzimidazole chemical structure, C18H21N3O2S, CAS 121306-13-6](/s/NHXAAAUUIOKQFM-UHFFFAOYSA-N.svg)
2-[(4-Ethoxyethoxy-3-methyl-2-pyridinyl)-methylthio]-benzimidazole
CAS 121306-13-6C18H21N3O2S
- Lkc2utn4FC86827-45-4C18H21N3O2S
- N-[(Cyclohex-3-en-1-yl)methyl]-2-(furan-2-yl)-4-methyl-6-(methylsulfanyl)pyrimidine-5-carboxamide1424486-46-3C18H21N3O2S
- (Z)-1-(3-((3-Cyclopropyl-1,2,4-oxadiazol-5-yl)methyl)piperidin-1-yl)-3-(thiophen-2-yl)prop-2-en-1-one1706469-73-9C18H21N3O2S
- N-(4-(Dimethylamino)phenyl)-6-((tetrahydrothiophen-3-yl)oxy)nicotinamide2034299-48-2C18H21N3O2S
- 1-(1-(Benzo[b]thiophene-2-carbonyl)azetidin-3-yl)piperidine-4-carboxamide2034529-27-4C18H21N3O2S
- N-(2-(Benzo[b]thiophen-3-yl)-2-(dimethylamino)ethyl)-3,5-dimethylisoxazole-4-carboxamide2034391-24-5C18H21N3O2S
- 1-Benzyl-N-(4-cyanothian-4-yl)-5-oxopyrrolidine-3-carboxamide2093801-33-1C18H21N3O2S
- 1-(4-{[2-(4-Methoxyphenyl)-1,3-thiazol-4-yl]methyl}piperazin-1-yl)prop-2-en-1-one2094888-91-0C18H21N3O2S
- 2,4-Dimethyl-6-({1-[2-(methylsulfanyl)benzoyl]pyrrolidin-3-yl}oxy)pyrimidine2097932-03-9C18H21N3O2S
- 1-{3-[(2-Methylpyrimidin-4-yl)oxy]pyrrolidin-1-yl}-3-(phenylsulfanyl)propan-1-one2097904-07-7C18H21N3O2S
- 4-Acetamido-N-{1-[(thiophen-3-yl)methyl]pyrrolidin-3-yl}benzamide2097866-38-9C18H21N3O2S
- 1-Ethyl-N,2-dimethyl-N-(4-methylphenyl)-1H-benzimidazole-5-sulfonamide412958-88-4C18H21N3O2S
- 2,4,5-Trimethyl-N-({8-methylimidazo[1,2-a]pyridin-2-yl}methyl)benzene-1-sulfonamide868972-44-5C18H21N3O2S
- 2,4,6-Trimethyl-N-({8-methylimidazo[1,2-a]pyridin-2-yl}methyl)benzene-1-sulfonamide868972-54-7C18H21N3O2S
- 1-(2-Phenylethenesulfonyl)-4-[(pyridin-2-yl)methyl]piperazine930565-89-2C18H21N3O2S
- 1H-Pyrrolo[2,3-B]pyridine-3-ethanamine, N,N-dimethyl-1-[(phenylmethyl)sulfonyl]-554452-55-0C18H21N3O2S
- 2-Phenyl-N-{[6-(pyrrolidin-1-yl)pyridin-3-yl]methyl}ethene-1-sulfonamide1198065-59-6C18H21N3O2S
- tert-Butyl 4-(5-(pyrimidin-2-yl)thiophen-2-yl)-3,6-dihydropyridine-1(2H)-carboxylate1093064-42-6C18H21N3O2S
- 2-(3-Cyano-4-isobutoxyphenyl)-N,N,4-trimethylthiazole-5-carboxamide1380049-45-5C18H21N3O2S
- 3-Methoxy-2-propyl-N-(2-(thiophen-2-yl)ethyl)-2H-indazole-6-carboxamide919107-97-4C18H21N3O2S
- N-tert-Butyl-1-(4-methylbenzenesulfonyl)-1H-1,3-benzodiazol-2-amine1479164-99-2C18H21N3O2S
- (3-Cyclopropyl-2-sulfanylidene-1H-imidazol-4-yl)-(2-methyl-2-phenylmorpholin-4-yl)methanone2094265-85-5C18H21N3O2S
- 2-({1-[2-(Methylsulfanyl)benzoyl]piperidin-4-yl}methoxy)pyrimidine2379975-25-2C18H21N3O2S
- 5-Methyl-2-({1-[3-(methylsulfanyl)benzoyl]piperidin-4-yl}oxy)pyrimidine2380077-78-9C18H21N3O2S
- 5-Methyl-2-({1-[2-(methylsulfanyl)benzoyl]piperidin-4-yl}oxy)pyrimidine2380077-67-6C18H21N3O2S
- 5-Methyl-2-({1-[4-(methylsulfanyl)benzoyl]piperidin-4-yl}oxy)pyrimidine2380079-30-9C18H21N3O2S
- 3-(3-{Octahydrocyclopenta[c]pyrrol-2-yl}azetidine-1-carbonyl)-5-(thiophen-2-yl)-1,2-oxazole2415586-49-9C18H21N3O2S
- 4-[1-(4-Phenyl-1,3-thiazol-2-yl)pyrrolidine-3-carbonyl]morpholine2877669-79-7C18H21N3O2S
- 2-Cyclopropyl-N-(4-hydroxy-3-methylphenyl)-N,4-dimethyl-6-(methylsulfanyl)pyrimidine-5-carboxamide2323757-43-1C18H21N3O2S
- 3-{[1-(Cyclopropylmethyl)aziridin-2-yl]methoxy}-N-(5-methyl-1,3-thiazol-2-yl)benzamide2418728-56-8C18H21N3O2S
- N-Butyl-1-tosyl-1H-benzo[d]imidazol-2-amine1479165-00-8C18H21N3O2S
- N-(2-{Imidazo[1,2-a]pyridin-2-yl}ethyl)-2,4,5-trimethylbenzene-1-sulfonamide868978-47-6C18H21N3O2S
- 2,4,6-Trimethyl-N-({7-methylimidazo[1,2-a]pyridin-2-yl}methyl)benzene-1-sulfonamide868972-32-1C18H21N3O2S
- Rabeprazole-d3 sulfide1185084-49-4C18H21N3O2S
- N-(3-Cyanothiolan-3-yl)-3-[4-(morpholin-4-yl)phenyl]prop-2-enamide1356781-30-0C18H21N3O2S
- (E)-N-[4-(4-Methylpiperazine-1-sulfonyl)phenyl]-1-phenylmethanimine595561-87-8C18H21N3O2S
- 4-{(E)-[4-(Ethenesulfonyl)phenyl]diazenyl}-N,N-diethylaniline60585-70-8C18H21N3O2S
- tert-Butyl 2-(benzylthio)-5,7-dihydro-6H-pyrrolo[3,4-D]pyrimidine-6-carboxylate1393576-36-7C18H21N3O2S
- tert-Butyl 4-(4-(thiophen-3-yl)pyrimidin-2-yl)-3,6-dihydropyridine-1(2H)-carboxylate1228457-13-3C18H21N3O2S
- 3-Cyclopropyl-6-{[1-(4-methylthiophene-2-carbonyl)pyrrolidin-3-yl]methoxy}pyridazine2549043-94-7C18H21N3O2S
- 3-Cyclopropyl-6-{[1-(5-methylthiophene-2-carbonyl)pyrrolidin-3-yl]methoxy}pyridazine2549026-08-4C18H21N3O2S
- N-Cyclopropyl-4-[(2-phenyl-1,3-thiazol-4-yl)methyl]morpholine-2-carboxamide2742068-11-5C18H21N3O2S
- 1-(2,3-Dihydro-1H-indol-1-yl)-2-[4-(1,3-thiazol-2-yloxy)piperidin-1-yl]ethan-1-one2742036-93-5C18H21N3O2S
- 4-[2-(Thiomorpholine-4-carbonyl)morpholin-4-yl]quinoline2742051-90-5C18H21N3O2S
- 2-[2-(Thiomorpholine-4-carbonyl)morpholin-4-yl]quinoline2741936-62-7C18H21N3O2S
- 1-[2-(Thiomorpholine-4-carbonyl)morpholin-4-yl]isoquinoline2770607-63-9C18H21N3O2S
- 3-Methyl-6-({1-[2-(methylsulfanyl)benzoyl]pyrrolidin-3-yl}methoxy)pyridazine2770624-63-8C18H21N3O2S
- 3-[(2S,6R,7S,7aS)-6,7-Dihydroxy-hexahydro-1H-pyrrolizin-2-yl]-1-(naphthalen-1-yl)thiourea2241225-46-5C18H21N3O2S
- 1-Benzyl-4-{5-[(cyclobutylmethyl)sulfanyl]-1,3,4-oxadiazol-2-yl}pyrrolidin-2-one3054544-52-1C18H21N3O2S
- 2-Methoxy-6-(3-{4H,5H,6H,7H-thieno[3,2-c]pyridine-5-carbonyl}pyrrolidin-1-yl)pyridine3054614-99-9C18H21N3O2S
- 3-Methoxy-2-(3-{4H,5H,6H,7H-thieno[3,2-c]pyridine-5-carbonyl}pyrrolidin-1-yl)pyridine3054608-95-3C18H21N3O2S
- 2-{4-[(1,3-Thiazol-5-yl)methyl]morpholine-2-carbonyl}-1,2,3,4-tetrahydroisoquinoline3054619-20-1C18H21N3O2S
- N-[4-(1-Isobutyryl-2,3-dihydro-1H-indol-5-yl)-5-methyl-1,3-thiazol-2-yl]acetamide606121-90-8C18H21N3O2S
- 1-(4-(Methylthio)benzyl)-4-(4-nitrophenyl)piperazine1061883-29-1C18H21N3O2S
- Benzyl 6,6-dimethyl-2-methylsulfanyl-5,8-dihydropyrido[3,4-d]pyrimidine-7-carboxylate2766053-45-4C18H21N3O2S
- Benzyl N-[[rel-(1S,5R,6s)-6-(4-methylthiazol-2-yl)-3-azabicyclo[3.1.0]hexan-6-yl]methyl]carbamate2818959-40-7C18H21N3O2S
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 3-(3-Methylthiophen-2-yl)-N-{[2-(2-oxopyrrolidin-1-yl)pyridin-4-yl]methyl}propanamide, N-(2-(3-Cyclopropyl-6-oxopyridazin-1(6H)-yl)ethyl)-3-(phenylthio)propanamide, 2-(Benzylthio)-N-(2-(3-cyclopropyl-6-oxopyridazin-1(6H)-yl)ethyl)acetamide. 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.