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Molecular formula

C18H21N5O2S

156 compounds have this formula on CompoundList.

Molar mass
371.46g/mol
Monoisotopic mass
371.1416Da
Atoms
47
Elements
5
Rings plus double bonds
11

The formula C18H21N5O2S describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 5 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 × 1858.20%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 215.70%
    1.008 × 21 = 21.168 g/mol
  • N Nitrogen × 518.85%
    14.007 × 5 = 70.035 g/mol
  • O Oxygen × 28.61%
    15.999 × 2 = 31.998 g/mol
  • S Sulfur × 18.63%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C18H21N5O2S

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

Showing 101 to 156 of 156 compounds

N-(4-Cyanooxan-4-yl)-3-[3-(3-methylphenyl)-5-sulfanyl-4H-1,2,4-triazol-4-yl]propanamide chemical structure, C18H21N5O2S, CAS 1808492-36-5
N-(4-Cyanooxan-4-yl)-3-[3-(3-methylphenyl)-5-sulfanyl-4H-1,2,4-triazol-4-yl]propanamide
CAS 1808492-36-5C18H21N5O2S
2-(3,5-Dimethylisoxazol-4-yl)-N-(1-(thiazolo[5,4-b]pyridin-2-yl)piperidin-4-yl)acetamide chemical structure, C18H21N5O2S, CAS 2034243-20-2
2-(3,5-Dimethylisoxazol-4-yl)-N-(1-(thiazolo[5,4-b]pyridin-2-yl)piperidin-4-yl)acetamide
CAS 2034243-20-2C18H21N5O2S
4-Methyl-2-(1H-pyrrol-1-yl)-N-(1-((tetrahydro-2H-pyran-2-yl)methyl)-1H-pyrazol-4-yl)thiazole-5-carboxamide chemical structure, C18H21N5O2S, CAS 2034618-90-9
4-Methyl-2-(1H-pyrrol-1-yl)-N-(1-((tetrahydro-2H-pyran-2-yl)methyl)-1H-pyrazol-4-yl)thiazole-5-carboxamide
CAS 2034618-90-9C18H21N5O2S
N-((8-Ethoxy-[1,2,4]triazolo[4,3-a]pyrazin-3-yl)methyl)-1-(thiophen-2-yl)cyclopentanecarboxamide chemical structure, C18H21N5O2S, CAS 2034547-31-2
N-((8-Ethoxy-[1,2,4]triazolo[4,3-a]pyrazin-3-yl)methyl)-1-(thiophen-2-yl)cyclopentanecarboxamide
CAS 2034547-31-2C18H21N5O2S
1-((4-(1H-Pyrazol-1-yl)phenyl)sulfonyl)-3-(1-methyl-1H-pyrazol-3-yl)piperidine chemical structure, C18H21N5O2S, CAS 2034461-68-0
1-((4-(1H-Pyrazol-1-yl)phenyl)sulfonyl)-3-(1-methyl-1H-pyrazol-3-yl)piperidine
CAS 2034461-68-0C18H21N5O2S
1-((4-(1H-Pyrazol-1-yl)phenyl)sulfonyl)-2-(1-methyl-1H-pyrazol-4-yl)piperidine chemical structure, C18H21N5O2S, CAS 2034512-75-7
1-((4-(1H-Pyrazol-1-yl)phenyl)sulfonyl)-2-(1-methyl-1H-pyrazol-4-yl)piperidine
CAS 2034512-75-7C18H21N5O2S
1-((2-(2-Oxopyrrolidin-1-yl)pyridin-4-yl)methyl)-3-(4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)urea chemical structure, C18H21N5O2S, CAS 2034339-85-8
1-((2-(2-Oxopyrrolidin-1-yl)pyridin-4-yl)methyl)-3-(4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)urea
CAS 2034339-85-8C18H21N5O2S
N-((6-Cyclopropylpyrimidin-4-yl)methyl)-2-(6,7-dimethyl-5-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidin-3-yl)acetamide chemical structure, C18H21N5O2S, CAS 2320221-65-4
N-((6-Cyclopropylpyrimidin-4-yl)methyl)-2-(6,7-dimethyl-5-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidin-3-yl)acetamide
CAS 2320221-65-4C18H21N5O2S
3-[4-(5,6-Dimethylpyrimidin-4-yl)-1,4-diazepan-1-yl]-1??,2-benzothiazole-1,1-dione chemical structure, C18H21N5O2S, CAS 2549029-29-8
3-[4-(5,6-Dimethylpyrimidin-4-yl)-1,4-diazepan-1-yl]-1??,2-benzothiazole-1,1-dione
CAS 2549029-29-8C18H21N5O2S
3-[4-(5-Ethylpyrimidin-2-yl)-1,4-diazepan-1-yl]-1??,2-benzothiazole-1,1-dione chemical structure, C18H21N5O2S, CAS 2548994-85-8
3-[4-(5-Ethylpyrimidin-2-yl)-1,4-diazepan-1-yl]-1??,2-benzothiazole-1,1-dione
CAS 2548994-85-8C18H21N5O2S
3-[4-(2,5,6-Trimethylpyrimidin-4-yl)piperazin-1-yl]-1??,2-benzothiazole-1,1-dione chemical structure, C18H21N5O2S, CAS 2549030-54-6
3-[4-(2,5,6-Trimethylpyrimidin-4-yl)piperazin-1-yl]-1??,2-benzothiazole-1,1-dione
CAS 2549030-54-6C18H21N5O2S
3-{Methyl[1-(5-methylpyrimidin-2-yl)piperidin-4-yl]amino}-1??,2-benzothiazole-1,1-dione chemical structure, C18H21N5O2S, CAS 2640951-80-8
3-{Methyl[1-(5-methylpyrimidin-2-yl)piperidin-4-yl]amino}-1??,2-benzothiazole-1,1-dione
CAS 2640951-80-8C18H21N5O2S
N-(1-Cyanocyclopentyl)-2-{[5-(2-methoxyphenyl)-4-methyl-4H-1,2,4-triazol-3-yl]sulfanyl}acetamide chemical structure, C18H21N5O2S, CAS 903180-25-6
N-(1-Cyanocyclopentyl)-2-{[5-(2-methoxyphenyl)-4-methyl-4H-1,2,4-triazol-3-yl]sulfanyl}acetamide
CAS 903180-25-6C18H21N5O2S
N-(1-Cyanocyclopentyl)-2-{[5-(4-methoxyphenyl)-4-methyl-4H-1,2,4-triazol-3-yl]sulfanyl}acetamide chemical structure, C18H21N5O2S, CAS 1001524-60-2
N-(1-Cyanocyclopentyl)-2-{[5-(4-methoxyphenyl)-4-methyl-4H-1,2,4-triazol-3-yl]sulfanyl}acetamide
CAS 1001524-60-2C18H21N5O2S
(4-(4-Methoxy-7-methylbenzo[d]thiazol-2-yl)piperazin-1-yl)(1-methyl-1H-pyrazol-3-yl)methanone chemical structure, C18H21N5O2S, CAS 1020489-64-8
(4-(4-Methoxy-7-methylbenzo[d]thiazol-2-yl)piperazin-1-yl)(1-methyl-1H-pyrazol-3-yl)methanone
CAS 1020489-64-8C18H21N5O2S
2-(2-(6-Aminopyridin-3-yl)-4-morpholinothieno[3,2-d]pyrimidin-6-yl)propan-2-ol chemical structure, C18H21N5O2S, CAS 1033736-75-2
2-(2-(6-Aminopyridin-3-yl)-4-morpholinothieno[3,2-d]pyrimidin-6-yl)propan-2-ol
CAS 1033736-75-2C18H21N5O2S
N-[2,4-Bis(dimethylamino)pyrimidin-5-yl]naphthalene-2-sulfonamide chemical structure, C18H21N5O2S, CAS 1448027-77-7
N-[2,4-Bis(dimethylamino)pyrimidin-5-yl]naphthalene-2-sulfonamide
CAS 1448027-77-7C18H21N5O2S
N-Methyl-1-phenyl-N-(1-{pyrazolo[1,5-a]pyrazin-4-yl}pyrrolidin-3-yl)methanesulfonamide chemical structure, C18H21N5O2S, CAS 2548984-23-0
N-Methyl-1-phenyl-N-(1-{pyrazolo[1,5-a]pyrazin-4-yl}pyrrolidin-3-yl)methanesulfonamide
CAS 2548984-23-0C18H21N5O2S
N-Methyl-1-phenyl-N-(1-{7H-pyrrolo[2,3-d]pyrimidin-4-yl}pyrrolidin-3-yl)methanesulfonamide chemical structure, C18H21N5O2S, CAS 2549019-38-5
N-Methyl-1-phenyl-N-(1-{7H-pyrrolo[2,3-d]pyrimidin-4-yl}pyrrolidin-3-yl)methanesulfonamide
CAS 2549019-38-5C18H21N5O2S
7-Methoxy-3-{[1-(3-methyl-1,2,4-thiadiazol-5-yl)piperidin-4-yl]methyl}-3,4-dihydroquinazolin-4-one chemical structure, C18H21N5O2S, CAS 2549064-33-5
7-Methoxy-3-{[1-(3-methyl-1,2,4-thiadiazol-5-yl)piperidin-4-yl]methyl}-3,4-dihydroquinazolin-4-one
CAS 2549064-33-5C18H21N5O2S
4-[({2,3-Dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]-1-(1,3-thiazole-4-carbonyl)piperidine chemical structure, C18H21N5O2S, CAS 2548988-19-6
4-[({2,3-Dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]-1-(1,3-thiazole-4-carbonyl)piperidine
CAS 2548988-19-6C18H21N5O2S
1-[2-(Morpholin-4-yl)-5H,6H,7H,8H-pyrido[2,3-d]pyrimidin-8-yl]-2-(pyridin-4-ylsulfanyl)ethan-1-one chemical structure, C18H21N5O2S, CAS 2549043-24-3
1-[2-(Morpholin-4-yl)-5H,6H,7H,8H-pyrido[2,3-d]pyrimidin-8-yl]-2-(pyridin-4-ylsulfanyl)ethan-1-one
CAS 2549043-24-3C18H21N5O2S
1-(7-Tosyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidin-3-amine chemical structure, C18H21N5O2S, CAS 1270019-57-2
1-(7-Tosyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidin-3-amine
CAS 1270019-57-2C18H21N5O2S
1-(1,3-Benzoxazol-2-yl)-N-(5-butyl-1,3,4-thiadiazol-2-yl)pyrrolidine-2-carboxamide chemical structure, C18H21N5O2S, CAS 2097866-08-3
1-(1,3-Benzoxazol-2-yl)-N-(5-butyl-1,3,4-thiadiazol-2-yl)pyrrolidine-2-carboxamide
CAS 2097866-08-3C18H21N5O2S

Frequently asked questions

What is the molar mass of C18H21N5O2S?

The molar mass of C18H21N5O2S is 371.46 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 5 nitrogen atoms, 2 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 371.1416 Da.

How many compounds have the formula C18H21N5O2S?

CompoundList lists 156 compounds with the molecular formula C18H21N5O2S, including N-(4-Cyanooxan-4-yl)-3-[3-(3-methylphenyl)-5-sulfanyl-4H-1,2,4-triazol-4-yl]propanamide, 2-(3,5-Dimethylisoxazol-4-yl)-N-(1-(thiazolo[5,4-b]pyridin-2-yl)piperidin-4-yl)acetamide, 4-Methyl-2-(1H-pyrrol-1-yl)-N-(1-((tetrahydro-2H-pyran-2-yl)methyl)-1H-pyrazol-4-yl)thiazole-5-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 C18H21N5O2S?

C18H21N5O2S 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.