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Molecular formula

C18H21N5O3S2

14 compounds have this formula on CompoundList.

Molar mass
419.52g/mol
Monoisotopic mass
419.1086Da
Atoms
49
Elements
5
Rings plus double bonds
11

The formula C18H21N5O3S2 describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 5 nitrogen atoms, 3 oxygen atoms and 2 sulfur atoms. 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 × 1851.53%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 215.05%
    1.008 × 21 = 21.168 g/mol
  • N Nitrogen × 516.69%
    14.007 × 5 = 70.035 g/mol
  • O Oxygen × 311.44%
    15.999 × 3 = 47.997 g/mol
  • S Sulfur × 215.28%
    32.06 × 2 = 64.120 g/mol
Look up another formula

Compounds with the formula C18H21N5O3S2

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

Showing 1 to 14 of 14 compounds

2-((4-Methyl-5-((2-oxobenzo[d]thiazol-3(2H)-yl)methyl)-4H-1,2,4-triazol-3-yl)thio)-N-((tetrahydrofuran-2-yl)methyl)acetamide chemical structure, C18H21N5O3S2, CAS 847400-65-1
2-((4-Methyl-5-((2-oxobenzo[d]thiazol-3(2H)-yl)methyl)-4H-1,2,4-triazol-3-yl)thio)-N-((tetrahydrofuran-2-yl)methyl)acetamide
CAS 847400-65-1C18H21N5O3S2
N-(2-Methoxyethyl)-2-(4-oxo-2-(pyrrolidin-1-yl)-7-(thiophen-2-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)acetamide chemical structure, C18H21N5O3S2, CAS 1105219-04-2
N-(2-Methoxyethyl)-2-(4-oxo-2-(pyrrolidin-1-yl)-7-(thiophen-2-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)acetamide
CAS 1105219-04-2C18H21N5O3S2
(1-Ethyl-1H-pyrazol-5-yl)(4-(6-(methylsulfonyl)benzo[d]thiazol-2-yl)piperazin-1-yl)methanone chemical structure, C18H21N5O3S2, CAS 1172542-50-5
(1-Ethyl-1H-pyrazol-5-yl)(4-(6-(methylsulfonyl)benzo[d]thiazol-2-yl)piperazin-1-yl)methanone
CAS 1172542-50-5C18H21N5O3S2
2-[(3-tert-Butyl-4-oxo-4H-[1,3,4]thiadiazolo[2,3-c][1,2,4]triazin-7-yl)sulfanyl]-N-(4-ethoxyphenyl)acetamide chemical structure, C18H21N5O3S2, CAS 328020-97-9
2-[(3-tert-Butyl-4-oxo-4H-[1,3,4]thiadiazolo[2,3-c][1,2,4]triazin-7-yl)sulfanyl]-N-(4-ethoxyphenyl)acetamide
CAS 328020-97-9C18H21N5O3S2
(1,4-Dimethyl-1H-pyrazol-3-yl)(4-(6-(methylsulfonyl)benzo[d]thiazol-2-yl)piperazin-1-yl)methanone chemical structure, C18H21N5O3S2, CAS 1203047-27-1
(1,4-Dimethyl-1H-pyrazol-3-yl)(4-(6-(methylsulfonyl)benzo[d]thiazol-2-yl)piperazin-1-yl)methanone
CAS 1203047-27-1C18H21N5O3S2
6-((4-(6-Methoxy-2-methylpyrimidin-4-yl)piperazin-1-yl)sulfonyl)-2-methylbenzo[d]thiazole chemical structure, C18H21N5O3S2, CAS 1251565-66-8
6-((4-(6-Methoxy-2-methylpyrimidin-4-yl)piperazin-1-yl)sulfonyl)-2-methylbenzo[d]thiazole
CAS 1251565-66-8C18H21N5O3S2
2-((1-(2-Methoxyethyl)-5-(4-methoxyphenyl)-1H-imidazol-2-yl)thio)-N-(5-methyl-1,3,4-thiadiazol-2-yl)acetamide chemical structure, C18H21N5O3S2, CAS 1207036-42-7
2-((1-(2-Methoxyethyl)-5-(4-methoxyphenyl)-1H-imidazol-2-yl)thio)-N-(5-methyl-1,3,4-thiadiazol-2-yl)acetamide
CAS 1207036-42-7C18H21N5O3S2
(2-Ethylbenzo[d]thiazol-6-yl)(4-((4-methyl-4H-1,2,4-triazol-3-yl)sulfonyl)piperidin-1-yl)methanone chemical structure, C18H21N5O3S2, CAS 1797688-40-4
(2-Ethylbenzo[d]thiazol-6-yl)(4-((4-methyl-4H-1,2,4-triazol-3-yl)sulfonyl)piperidin-1-yl)methanone
CAS 1797688-40-4C18H21N5O3S2
{1-[6-(Methylsulfanyl)-9H-purin-9-yl]pyrrolidin-2-yl}methyl 4-methylbenzene-1-sulfonate chemical structure, C18H21N5O3S2, CAS 57464-60-5
{1-[6-(Methylsulfanyl)-9H-purin-9-yl]pyrrolidin-2-yl}methyl 4-methylbenzene-1-sulfonate
CAS 57464-60-5C18H21N5O3S2
2-(2-Morpholino-4-oxo-7-(thiophen-2-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)-N-propylacetamide chemical structure, C18H21N5O3S2, CAS 1021045-27-1
2-(2-Morpholino-4-oxo-7-(thiophen-2-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)-N-propylacetamide
CAS 1021045-27-1C18H21N5O3S2
1,3-Dimethyl-7-(2-oxo-2-(7-(thiophen-2-yl)-1,4-thiazepan-4-yl)ethyl)-1H-purine-2,6(3H,7H)-dione chemical structure, C18H21N5O3S2, CAS 1704636-83-8
1,3-Dimethyl-7-(2-oxo-2-(7-(thiophen-2-yl)-1,4-thiazepan-4-yl)ethyl)-1H-purine-2,6(3H,7H)-dione
CAS 1704636-83-8C18H21N5O3S2
(1,5-Dimethyl-1H-pyrazol-3-yl)(4-(6-(methylsulfonyl)benzo[d]thiazol-2-yl)piperazin-1-yl)methanone chemical structure, C18H21N5O3S2, CAS 1013770-00-7
(1,5-Dimethyl-1H-pyrazol-3-yl)(4-(6-(methylsulfonyl)benzo[d]thiazol-2-yl)piperazin-1-yl)methanone
CAS 1013770-00-7C18H21N5O3S2
Benzo[d]thiazol-2-yl(4-((1,2-dimethyl-1H-imidazol-4-yl)sulfonyl)-1,4-diazepan-1-yl)methanone chemical structure, C18H21N5O3S2, CAS 1903602-29-8
Benzo[d]thiazol-2-yl(4-((1,2-dimethyl-1H-imidazol-4-yl)sulfonyl)-1,4-diazepan-1-yl)methanone
CAS 1903602-29-8C18H21N5O3S2
5-(1-Methyl-1H-pyrazol-4-yl)-2-({1-[(5-methylthiophen-2-yl)sulfonyl]piperidin-4-yl}oxy)pyrimidine chemical structure, C18H21N5O3S2, CAS 2549009-24-5
5-(1-Methyl-1H-pyrazol-4-yl)-2-({1-[(5-methylthiophen-2-yl)sulfonyl]piperidin-4-yl}oxy)pyrimidine
CAS 2549009-24-5C18H21N5O3S2

Frequently asked questions

What is the molar mass of C18H21N5O3S2?

The molar mass of C18H21N5O3S2 is 419.52 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 5 nitrogen atoms, 3 oxygen atoms and 2 sulfur atoms. The monoisotopic mass is 419.1086 Da.

How many compounds have the formula C18H21N5O3S2?

CompoundList lists 14 compounds with the molecular formula C18H21N5O3S2, including 2-((4-Methyl-5-((2-oxobenzo[d]thiazol-3(2H)-yl)methyl)-4H-1,2,4-triazol-3-yl)thio)-N-((tetrahydrofuran-2-yl)methyl)acetamide, N-(2-Methoxyethyl)-2-(4-oxo-2-(pyrrolidin-1-yl)-7-(thiophen-2-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)acetamide, (1-Ethyl-1H-pyrazol-5-yl)(4-(6-(methylsulfonyl)benzo[d]thiazol-2-yl)piperazin-1-yl)methanone. 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 C18H21N5O3S2?

C18H21N5O3S2 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.