CompoundList
Molecular formula

C18H21N5O3S

118 compounds have this formula on CompoundList.

Molar mass
387.46g/mol
Monoisotopic mass
387.1365Da
Atoms
48
Elements
5
Rings plus double bonds
11

The formula C18H21N5O3S describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 5 nitrogen atoms, 3 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 × 1855.80%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 215.46%
    1.008 × 21 = 21.168 g/mol
  • N Nitrogen × 518.08%
    14.007 × 5 = 70.035 g/mol
  • O Oxygen × 312.39%
    15.999 × 3 = 47.997 g/mol
  • S Sulfur × 18.27%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C18H21N5O3S

Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.

Showing 1 to 100 of 118 compounds

N-(3,4-Dimethylphenyl)-5-(1-ethyl-1H-tetrazol-5-yl)-2-methoxybenzenesulfonamide chemical structure, C18H21N5O3S, CAS 374599-26-5
N-(3,4-Dimethylphenyl)-5-(1-ethyl-1H-tetrazol-5-yl)-2-methoxybenzenesulfonamide
CAS 374599-26-5C18H21N5O3S
2-[(1,3-Dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)sulfanyl]-N-phenyl-N-(propan-2-yl)acetamide chemical structure, C18H21N5O3S, CAS 326004-37-9
2-[(1,3-Dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)sulfanyl]-N-phenyl-N-(propan-2-yl)acetamide
CAS 326004-37-9C18H21N5O3S
Ethyl 4-(2-((6-(pyridin-4-yl)pyridazin-3-yl)thio)acetyl)piperazine-1-carboxylate chemical structure, C18H21N5O3S, CAS 894000-99-8
Ethyl 4-(2-((6-(pyridin-4-yl)pyridazin-3-yl)thio)acetyl)piperazine-1-carboxylate
CAS 894000-99-8C18H21N5O3S
6-[[4-(4-Ethoxyphenyl)-5-propan-2-ylsulfanyl-1,2,4-triazol-3-yl]methyl]-1H-pyrimidine-2,4-dione chemical structure, C18H21N5O3S, CAS 852153-40-3
6-[[4-(4-Ethoxyphenyl)-5-propan-2-ylsulfanyl-1,2,4-triazol-3-yl]methyl]-1H-pyrimidine-2,4-dione
CAS 852153-40-3C18H21N5O3S
N-(4-Ethylphenyl)-2-(1,3,7-trimethyl-2,6-dioxopurin-8-yl)sulfanylacetamide chemical structure, C18H21N5O3S, CAS 341951-99-3
N-(4-Ethylphenyl)-2-(1,3,7-trimethyl-2,6-dioxopurin-8-yl)sulfanylacetamide
CAS 341951-99-3C18H21N5O3S
Ethyl 2-(2-((4-ethyl-5-(1H-indol-3-yl)-4H-1,2,4-triazol-3-yl)thio)acetamido)acetate chemical structure, C18H21N5O3S, CAS 852144-08-2
Ethyl 2-(2-((4-ethyl-5-(1H-indol-3-yl)-4H-1,2,4-triazol-3-yl)thio)acetamido)acetate
CAS 852144-08-2C18H21N5O3S
Revospirone chemical structure, C18H21N5O3S, CAS 95847-87-3
Revospirone
CAS 95847-87-3C18H21N5O3S
6-[[5-Butan-2-ylsulfanyl-4-(4-methoxyphenyl)-1,2,4-triazol-3-yl]methyl]-1H-pyrimidine-2,4-dione chemical structure, C18H21N5O3S, CAS 852152-78-4
6-[[5-Butan-2-ylsulfanyl-4-(4-methoxyphenyl)-1,2,4-triazol-3-yl]methyl]-1H-pyrimidine-2,4-dione
CAS 852152-78-4C18H21N5O3S
Cgp 13231 chemical structure, C18H21N5O3S, CAS 113962-61-1
Cgp 13231
CAS 113962-61-1C18H21N5O3S
2-((4-(4-Ethoxyphenyl)-5-((1-methyl-1H-pyrrol-2-yl)methyl)-4H-1,2,4-triazol-3-yl)thio)-N-hydroxyacetamide chemical structure, C18H21N5O3S, CAS 878065-51-1
2-((4-(4-Ethoxyphenyl)-5-((1-methyl-1H-pyrrol-2-yl)methyl)-4H-1,2,4-triazol-3-yl)thio)-N-hydroxyacetamide
CAS 878065-51-1C18H21N5O3S
Ethyl 4-[2-(6-pyridin-3-ylpyridazin-3-yl)sulfanylacetyl]piperazine-1-carboxylate chemical structure, C18H21N5O3S, CAS 894000-95-4
Ethyl 4-[2-(6-pyridin-3-ylpyridazin-3-yl)sulfanylacetyl]piperazine-1-carboxylate
CAS 894000-95-4C18H21N5O3S
Ethyl 3-cyano-2-(1-isopropyl-1H-pyrazole-5-carboxamido)-4,5-dihydrothieno[2,3-c]pyridine-6(7H)-carboxylate chemical structure, C18H21N5O3S, CAS 1203240-19-0
Ethyl 3-cyano-2-(1-isopropyl-1H-pyrazole-5-carboxamido)-4,5-dihydrothieno[2,3-c]pyridine-6(7H)-carboxylate
CAS 1203240-19-0C18H21N5O3S
N,N,4-trimethyl-2-[2-(2-oxo-3-phenylimidazolidin-1-yl)acetamido]-1,3-thiazole-5-carboxamide chemical structure, C18H21N5O3S, CAS 1251546-05-0
N,N,4-trimethyl-2-[2-(2-oxo-3-phenylimidazolidin-1-yl)acetamido]-1,3-thiazole-5-carboxamide
CAS 1251546-05-0C18H21N5O3S
N-(2-(3-(3,5-Dimethyl-1H-pyrazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-1-phenylmethanesulfonamide chemical structure, C18H21N5O3S, CAS 1351642-02-8
N-(2-(3-(3,5-Dimethyl-1H-pyrazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-1-phenylmethanesulfonamide
CAS 1351642-02-8C18H21N5O3S
Usp8-IN-1 chemical structure, C18H21N5O3S, CAS 2477650-96-5
Usp8-IN-1
CAS 2477650-96-5C18H21N5O3S
N-(2-(3-(1H-Imidazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2,4,5-trimethylbenzenesulfonamide chemical structure, C18H21N5O3S, CAS 1396784-23-8
N-(2-(3-(1H-Imidazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2,4,5-trimethylbenzenesulfonamide
CAS 1396784-23-8C18H21N5O3S
(E)-N-(6-Acetamido-3-(2-ethoxyethyl)benzo[d]thiazol-2(3H)-ylidene)-1-methyl-1H-pyrazole-5-carboxamide chemical structure, C18H21N5O3S, CAS 1173344-19-8
(E)-N-(6-Acetamido-3-(2-ethoxyethyl)benzo[d]thiazol-2(3H)-ylidene)-1-methyl-1H-pyrazole-5-carboxamide
CAS 1173344-19-8C18H21N5O3S
N-[5-(1,5-Dimethyl-1H-pyrazol-3-yl)-1,3,4-oxadiazol-2-yl]-4-[(4-methoxyphenyl)sulfanyl]butanamide chemical structure, C18H21N5O3S, CAS 1019102-21-6
N-[5-(1,5-Dimethyl-1H-pyrazol-3-yl)-1,3,4-oxadiazol-2-yl]-4-[(4-methoxyphenyl)sulfanyl]butanamide
CAS 1019102-21-6C18H21N5O3S
4,7-Dimethoxy-2-[4-(1-methyl-1H-pyrazole-3-carbonyl)piperazin-1-yl]-1,3-benzothiazole chemical structure, C18H21N5O3S, CAS 1020489-62-6
4,7-Dimethoxy-2-[4-(1-methyl-1H-pyrazole-3-carbonyl)piperazin-1-yl]-1,3-benzothiazole
CAS 1020489-62-6C18H21N5O3S
N-[6-({[(3-Acetamidophenyl)carbamoyl]methyl}sulfanyl)pyridazin-3-yl]-2-methylpropanamide chemical structure, C18H21N5O3S, CAS 1021255-59-3
N-[6-({[(3-Acetamidophenyl)carbamoyl]methyl}sulfanyl)pyridazin-3-yl]-2-methylpropanamide
CAS 1021255-59-3C18H21N5O3S
N-(Benzo[d]thiazol-2-yl)-2-(3-ethyl-2,4-dioxo-1,3,8-triazaspiro[4.5]decan-8-yl)acetamide chemical structure, C18H21N5O3S, CAS 923221-59-4
N-(Benzo[d]thiazol-2-yl)-2-(3-ethyl-2,4-dioxo-1,3,8-triazaspiro[4.5]decan-8-yl)acetamide
CAS 923221-59-4C18H21N5O3S
2-(6-(tert-Butylthio)-3-oxo-[1,2,4]triazolo[4,3-b]pyridazin-2(3H)-yl)-N-(2-methoxyphenyl)acetamide chemical structure, C18H21N5O3S, CAS 1040667-17-1
2-(6-(tert-Butylthio)-3-oxo-[1,2,4]triazolo[4,3-b]pyridazin-2(3H)-yl)-N-(2-methoxyphenyl)acetamide
CAS 1040667-17-1C18H21N5O3S
Egfr/her2-IN-6 chemical structure, C18H21N5O3S, CAS 2820126-50-7
Egfr/her2-IN-6
CAS 2820126-50-7C18H21N5O3S
2-{[1,3-Dimethyl-2,6-dioxo-7-(3-phenylpropyl)-2,3,6,7-tetrahydro-1H-purin-8-yl]sulfanyl}acetamide chemical structure, C18H21N5O3S, CAS 377066-94-9
2-{[1,3-Dimethyl-2,6-dioxo-7-(3-phenylpropyl)-2,3,6,7-tetrahydro-1H-purin-8-yl]sulfanyl}acetamide
CAS 377066-94-9C18H21N5O3S

Frequently asked questions

What is the molar mass of C18H21N5O3S?

The molar mass of C18H21N5O3S is 387.46 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 5 nitrogen atoms, 3 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 387.1365 Da.

How many compounds have the formula C18H21N5O3S?

CompoundList lists 118 compounds with the molecular formula C18H21N5O3S, including N-(3,4-Dimethylphenyl)-5-(1-ethyl-1H-tetrazol-5-yl)-2-methoxybenzenesulfonamide, 2-[(1,3-Dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)sulfanyl]-N-phenyl-N-(propan-2-yl)acetamide, Ethyl 4-(2-((6-(pyridin-4-yl)pyridazin-3-yl)thio)acetyl)piperazine-1-carboxylate. 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 C18H21N5O3S?

C18H21N5O3S has a degree of unsaturation of 11. 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.