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Molecular formula

C21H18N4O2S

143 compounds have this formula on CompoundList.

Molar mass
390.46g/mol
Monoisotopic mass
390.1150Da
Atoms
46
Elements
5
Rings plus double bonds
15

The formula C21H18N4O2S describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 4 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 × 2164.60%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 184.65%
    1.008 × 18 = 18.144 g/mol
  • N Nitrogen × 414.35%
    14.007 × 4 = 56.028 g/mol
  • O Oxygen × 28.19%
    15.999 × 2 = 31.998 g/mol
  • S Sulfur × 18.21%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C21H18N4O2S

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

Showing 101 to 143 of 143 compounds

6-((1-(2-Phenylthiazole-4-carbonyl)piperidin-4-yl)oxy)nicotinonitrile chemical structure, C21H18N4O2S, CAS 1421505-71-6
6-((1-(2-Phenylthiazole-4-carbonyl)piperidin-4-yl)oxy)nicotinonitrile
CAS 1421505-71-6C21H18N4O2S
3-Phenyl-N-(1-(thiazol-2-yl)pyrrolidin-3-yl)benzo[c]isoxazole-5-carboxamide chemical structure, C21H18N4O2S, CAS 1798624-48-2
3-Phenyl-N-(1-(thiazol-2-yl)pyrrolidin-3-yl)benzo[c]isoxazole-5-carboxamide
CAS 1798624-48-2C21H18N4O2S
Benzo[c][1,2,5]thiadiazol-5-yl(4-(quinolin-8-yloxy)piperidin-1-yl)methanone chemical structure, C21H18N4O2S, CAS 2034432-13-6
Benzo[c][1,2,5]thiadiazol-5-yl(4-(quinolin-8-yloxy)piperidin-1-yl)methanone
CAS 2034432-13-6C21H18N4O2S
3-[4-Hydroxy-2-imino-3-(4-phenyl-1,3-thiazol-2-yl)-2,5-dihydro-1H-pyrrol-1-yl]-N-methylbenzamide chemical structure, C21H18N4O2S, CAS 1676074-43-3
3-[4-Hydroxy-2-imino-3-(4-phenyl-1,3-thiazol-2-yl)-2,5-dihydro-1H-pyrrol-1-yl]-N-methylbenzamide
CAS 1676074-43-3C21H18N4O2S
N-{4-[4-Hydroxy-2-imino-3-(4-phenyl-1,3-thiazol-2-yl)-2,5-dihydro-1H-pyrrol-1-yl]phenyl}acetamide chemical structure, C21H18N4O2S, CAS 929969-06-2
N-{4-[4-Hydroxy-2-imino-3-(4-phenyl-1,3-thiazol-2-yl)-2,5-dihydro-1H-pyrrol-1-yl]phenyl}acetamide
CAS 929969-06-2C21H18N4O2S
N-{3-[4-Hydroxy-2-imino-3-(4-phenyl-1,3-thiazol-2-yl)-2,5-dihydro-1H-pyrrol-1-yl]phenyl}acetamide chemical structure, C21H18N4O2S, CAS 929834-78-6
N-{3-[4-Hydroxy-2-imino-3-(4-phenyl-1,3-thiazol-2-yl)-2,5-dihydro-1H-pyrrol-1-yl]phenyl}acetamide
CAS 929834-78-6C21H18N4O2S
6-(Cinnamylthio)-1-(2-methoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one chemical structure, C21H18N4O2S, CAS 946262-88-0
6-(Cinnamylthio)-1-(2-methoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one
CAS 946262-88-0C21H18N4O2S
2-(((5-Methyl-2-(m-tolyl)oxazol-4-yl)methyl)thio)-6-(pyridin-4-yl)pyrimidin-4-ol chemical structure, C21H18N4O2S, CAS 1224006-93-2
2-(((5-Methyl-2-(m-tolyl)oxazol-4-yl)methyl)thio)-6-(pyridin-4-yl)pyrimidin-4-ol
CAS 1224006-93-2C21H18N4O2S
5-Methyl-3-phenyl-N-[5-(2-phenylethyl)-1,3,4-thiadiazol-2-yl]-1,2-oxazole-4-carboxamide chemical structure, C21H18N4O2S, CAS 701228-99-1
5-Methyl-3-phenyl-N-[5-(2-phenylethyl)-1,3,4-thiadiazol-2-yl]-1,2-oxazole-4-carboxamide
CAS 701228-99-1C21H18N4O2S
N-[5-(Ethoxymethyl)-1,3,4-thiadiazol-2-yl]-2-phenylquinoline-4-carboxamide chemical structure, C21H18N4O2S, CAS 701247-46-3
N-[5-(Ethoxymethyl)-1,3,4-thiadiazol-2-yl]-2-phenylquinoline-4-carboxamide
CAS 701247-46-3C21H18N4O2S
(Z)-N-(4-((2-Cyano-2-(4-(4-methoxyphenyl)thiazol-2-yl)vinyl)amino)phenyl)acetamide chemical structure, C21H18N4O2S, CAS 1322298-64-5
(Z)-N-(4-((2-Cyano-2-(4-(4-methoxyphenyl)thiazol-2-yl)vinyl)amino)phenyl)acetamide
CAS 1322298-64-5C21H18N4O2S
(Z)-3-((4-Isopropylphenyl)amino)-2-(4-(4-nitrophenyl)thiazol-2-yl)acrylonitrile chemical structure, C21H18N4O2S, CAS 1321951-34-1
(Z)-3-((4-Isopropylphenyl)amino)-2-(4-(4-nitrophenyl)thiazol-2-yl)acrylonitrile
CAS 1321951-34-1C21H18N4O2S
(2E)-4-(1,3-Benzodioxol-5-yl)-N-(4-propan-2-ylanilino)-1,3-thiazole-2-carboximidoyl cyanide chemical structure, C21H18N4O2S, CAS 477195-15-6
(2E)-4-(1,3-Benzodioxol-5-yl)-N-(4-propan-2-ylanilino)-1,3-thiazole-2-carboximidoyl cyanide
CAS 477195-15-6C21H18N4O2S
5-(Benzylthio)-1,3-dimethyl-7-phenylpyrimido[4,5-d]pyrimidine-2,4(1H,3H)-dione chemical structure, C21H18N4O2S, CAS 863003-45-6
5-(Benzylthio)-1,3-dimethyl-7-phenylpyrimido[4,5-d]pyrimidine-2,4(1H,3H)-dione
CAS 863003-45-6C21H18N4O2S
2,4-Dimethyl-N-(3-(2-methyl-4-oxoquinazolin-3(4H)-yl)phenyl)thiazole-5-carboxamide chemical structure, C21H18N4O2S, CAS 898420-57-0
2,4-Dimethyl-N-(3-(2-methyl-4-oxoquinazolin-3(4H)-yl)phenyl)thiazole-5-carboxamide
CAS 898420-57-0C21H18N4O2S
1-(4-Methylphenyl)-3-[2-oxo-3-(thiophen-2-ylmethyl)quinazolin-4-yl]urea chemical structure, C21H18N4O2S, CAS 941895-65-4
1-(4-Methylphenyl)-3-[2-oxo-3-(thiophen-2-ylmethyl)quinazolin-4-yl]urea
CAS 941895-65-4C21H18N4O2S
1-Benzyl-3-(benzyloxy)-N-(thiazol-2-yl)-1H-pyrazole-4-carboxamide chemical structure, C21H18N4O2S, CAS 1013759-60-8
1-Benzyl-3-(benzyloxy)-N-(thiazol-2-yl)-1H-pyrazole-4-carboxamide
CAS 1013759-60-8C21H18N4O2S
1,5-Dimethyl-N-(4-(4-phenoxyphenyl)thiazol-2-yl)-1H-pyrazole-3-carboxamide chemical structure, C21H18N4O2S, CAS 1013782-96-1
1,5-Dimethyl-N-(4-(4-phenoxyphenyl)thiazol-2-yl)-1H-pyrazole-3-carboxamide
CAS 1013782-96-1C21H18N4O2S
N-(3-Methoxyphenyl)-2-({2-phenylpyrazolo[1,5-A]pyrazin-4-YL}sulfanyl)acetamide chemical structure, C21H18N4O2S, CAS 1021252-00-5
N-(3-Methoxyphenyl)-2-({2-phenylpyrazolo[1,5-A]pyrazin-4-YL}sulfanyl)acetamide
CAS 1021252-00-5C21H18N4O2S
4-(2-(6-(p-Tolyl)imidazo[2,1-b]thiazol-3-yl)acetamido)benzamide chemical structure, C21H18N4O2S, CAS 897463-55-7
4-(2-(6-(p-Tolyl)imidazo[2,1-b]thiazol-3-yl)acetamido)benzamide
CAS 897463-55-7C21H18N4O2S
N-[2-(Benzylamino)-2-oxoethyl]-2-(1H-pyrrol-1-yl)-1,3-benzothiazole-6-carboxamide chemical structure, C21H18N4O2S, CAS 1010879-52-3
N-[2-(Benzylamino)-2-oxoethyl]-2-(1H-pyrrol-1-yl)-1,3-benzothiazole-6-carboxamide
CAS 1010879-52-3C21H18N4O2S
1-(4-Ethylphenyl)-3-(3-(4-(methylthio)phenyl)-1,2,4-oxadiazol-5-yl)pyridazin-4(1H)-one chemical structure, C21H18N4O2S, CAS 1251675-30-5
1-(4-Ethylphenyl)-3-(3-(4-(methylthio)phenyl)-1,2,4-oxadiazol-5-yl)pyridazin-4(1H)-one
CAS 1251675-30-5C21H18N4O2S
N-(2-(6-Oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)ethyl)-4-(1H-pyrrol-1-yl)benzamide chemical structure, C21H18N4O2S, CAS 1226439-70-8
N-(2-(6-Oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)ethyl)-4-(1H-pyrrol-1-yl)benzamide
CAS 1226439-70-8C21H18N4O2S
5-(((6-(3-Methoxyphenyl)pyridazin-3-yl)thio)methyl)-3-(p-tolyl)-1,2,4-oxadiazole chemical structure, C21H18N4O2S, CAS 1111316-56-3
5-(((6-(3-Methoxyphenyl)pyridazin-3-yl)thio)methyl)-3-(p-tolyl)-1,2,4-oxadiazole
CAS 1111316-56-3C21H18N4O2S

Frequently asked questions

What is the molar mass of C21H18N4O2S?

The molar mass of C21H18N4O2S is 390.46 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms, 2 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 390.1150 Da.

How many compounds have the formula C21H18N4O2S?

CompoundList lists 143 compounds with the molecular formula C21H18N4O2S, including 6-((1-(2-Phenylthiazole-4-carbonyl)piperidin-4-yl)oxy)nicotinonitrile, 3-Phenyl-N-(1-(thiazol-2-yl)pyrrolidin-3-yl)benzo[c]isoxazole-5-carboxamide, Benzo[c][1,2,5]thiadiazol-5-yl(4-(quinolin-8-yloxy)piperidin-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 C21H18N4O2S?

C21H18N4O2S has a degree of unsaturation of 15. 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.