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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 101 to 118 of 118 compounds

6-((4-(4-Ethoxyphenyl)-5-(propylthio)-4H-1,2,4-triazol-3-yl)methyl)pyrimidine-2,4(1H,3H)-dione chemical structure, C18H21N5O3S, CAS 852153-39-0
6-((4-(4-Ethoxyphenyl)-5-(propylthio)-4H-1,2,4-triazol-3-yl)methyl)pyrimidine-2,4(1H,3H)-dione
CAS 852153-39-0C18H21N5O3S
N-{2-Oxo-2-[4-(pyrimidin-2-yl)piperazin-1-yl]ethyl}-2-phenylethene-1-sulfonamide chemical structure, C18H21N5O3S, CAS 877839-39-9
N-{2-Oxo-2-[4-(pyrimidin-2-yl)piperazin-1-yl]ethyl}-2-phenylethene-1-sulfonamide
CAS 877839-39-9C18H21N5O3S
3-Methyl-5-[4-(methylsulfonylmethyl)-6-morpholin-4-yl-pyrimidin-2-yl]-1H-indazole chemical structure, C18H21N5O3S, CAS 944058-05-3
3-Methyl-5-[4-(methylsulfonylmethyl)-6-morpholin-4-yl-pyrimidin-2-yl]-1H-indazole
CAS 944058-05-3C18H21N5O3S
N-(2H-1,3-Benzodioxol-5-yl)-2-{[4-(4-methylpiperazin-1-yl)pyrimidin-2-yl]sulfanyl}acetamide chemical structure, C18H21N5O3S, CAS 1412223-27-8
N-(2H-1,3-Benzodioxol-5-yl)-2-{[4-(4-methylpiperazin-1-yl)pyrimidin-2-yl]sulfanyl}acetamide
CAS 1412223-27-8C18H21N5O3S
N-{1-[4-(Pyrrolidine-1-sulfonyl)benzoyl]azetidin-3-yl}pyrimidin-4-amine chemical structure, C18H21N5O3S, CAS 2097901-20-5
N-{1-[4-(Pyrrolidine-1-sulfonyl)benzoyl]azetidin-3-yl}pyrimidin-4-amine
CAS 2097901-20-5C18H21N5O3S
Methyl 2-(1-{5H,6H,7H-cyclopenta[c]pyridazin-3-yl}piperidine-3-amido)-1,3-thiazole-5-carboxylate chemical structure, C18H21N5O3S, CAS 2097897-56-6
Methyl 2-(1-{5H,6H,7H-cyclopenta[c]pyridazin-3-yl}piperidine-3-amido)-1,3-thiazole-5-carboxylate
CAS 2097897-56-6C18H21N5O3S
Methyl 2-[1-(6-cyclopropylpyridazin-3-yl)piperidine-3-amido]-1,3-thiazole-4-carboxylate chemical structure, C18H21N5O3S, CAS 2097901-35-2
Methyl 2-[1-(6-cyclopropylpyridazin-3-yl)piperidine-3-amido]-1,3-thiazole-4-carboxylate
CAS 2097901-35-2C18H21N5O3S
N-(1,3-Benzothiazol-2-yl)-2-[4-(3-methyl-2,4-dioxoimidazolidin-1-yl)piperidin-1-yl]acetamide chemical structure, C18H21N5O3S, CAS 2178773-97-0
N-(1,3-Benzothiazol-2-yl)-2-[4-(3-methyl-2,4-dioxoimidazolidin-1-yl)piperidin-1-yl]acetamide
CAS 2178773-97-0C18H21N5O3S
3-[4-(4-Cyclopropyl-1-methyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl)piperidin-1-yl]-1lambda6,2-benzothiazole-1,1-dione chemical structure, C18H21N5O3S, CAS 2549014-66-4
3-[4-(4-Cyclopropyl-1-methyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl)piperidin-1-yl]-1lambda6,2-benzothiazole-1,1-dione
CAS 2549014-66-4C18H21N5O3S
3-(3-Isopropoxyisoxazol-5-yl)-N-(6-methyl-5,6-dihydro-4H-thiazolo[4,5-e]indazol-2-yl)propanamide chemical structure, C18H21N5O3S, CAS 958695-71-1
3-(3-Isopropoxyisoxazol-5-yl)-N-(6-methyl-5,6-dihydro-4H-thiazolo[4,5-e]indazol-2-yl)propanamide
CAS 958695-71-1C18H21N5O3S
2-Methyl-5-[4-(methylsulfonylmethyl)-6-morpholin-4-yl-pyrimidin-2-yl]-1H-benzoimidazole chemical structure, C18H21N5O3S, CAS 944057-92-5
2-Methyl-5-[4-(methylsulfonylmethyl)-6-morpholin-4-yl-pyrimidin-2-yl]-1H-benzoimidazole
CAS 944057-92-5C18H21N5O3S
5'-S-(4-Ethylphenyl)-5'-thio-adenosine chemical structure, C18H21N5O3S, CAS 595609-31-7
5'-S-(4-Ethylphenyl)-5'-thio-adenosine
CAS 595609-31-7C18H21N5O3S
N-(4-(6-(Tetrahydro-2H-pyran-4-ylamino)imidazo[1,2-b]pyridazin-3-yl)phenyl)methanesulfonamide chemical structure, C18H21N5O3S, CAS 1012345-80-0
N-(4-(6-(Tetrahydro-2H-pyran-4-ylamino)imidazo[1,2-b]pyridazin-3-yl)phenyl)methanesulfonamide
CAS 1012345-80-0C18H21N5O3S
3-[4-(5-Azidopentylsulfanyl)-1-oxo-isoindolin-2-yl]piperidine-2,6-dione chemical structure, C18H21N5O3S, CAS 2378582-76-2
3-[4-(5-Azidopentylsulfanyl)-1-oxo-isoindolin-2-yl]piperidine-2,6-dione
CAS 2378582-76-2C18H21N5O3S
N-[1-(1,1-Dioxo-1,2-benzothiazol-3-yl)piperidin-3-yl]-1,5-dimethylpyrazole-3-carboxamide chemical structure, C18H21N5O3S, CAS 3066642-60-9
N-[1-(1,1-Dioxo-1,2-benzothiazol-3-yl)piperidin-3-yl]-1,5-dimethylpyrazole-3-carboxamide
CAS 3066642-60-9C18H21N5O3S
6-[4-(1,1-Dioxo-1,2-benzothiazol-3-yl)piperazin-1-yl]-2-propan-2-ylpyridazin-3-one chemical structure, C18H21N5O3S, CAS 2770638-01-0
6-[4-(1,1-Dioxo-1,2-benzothiazol-3-yl)piperazin-1-yl]-2-propan-2-ylpyridazin-3-one
CAS 2770638-01-0C18H21N5O3S
1-{1-[3-(Methoxymethyl)-1,2,4-thiadiazol-5-yl]piperidin-4-yl}-3-phenylimidazolidine-2,4-dione chemical structure, C18H21N5O3S, CAS 2770642-39-0
1-{1-[3-(Methoxymethyl)-1,2,4-thiadiazol-5-yl]piperidin-4-yl}-3-phenylimidazolidine-2,4-dione
CAS 2770642-39-0C18H21N5O3S
5'-S-(2-Ethylphenyl)-5'-thio-adenosine chemical structure, C18H21N5O3S, CAS 595608-86-9
5'-S-(2-Ethylphenyl)-5'-thio-adenosine
CAS 595608-86-9C18H21N5O3S

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 6-((4-(4-Ethoxyphenyl)-5-(propylthio)-4H-1,2,4-triazol-3-yl)methyl)pyrimidine-2,4(1H,3H)-dione, N-{2-Oxo-2-[4-(pyrimidin-2-yl)piperazin-1-yl]ethyl}-2-phenylethene-1-sulfonamide, 3-Methyl-5-[4-(methylsulfonylmethyl)-6-morpholin-4-yl-pyrimidin-2-yl]-1H-indazole. 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.