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Molecular formula

C21H18FN5OS

45 compounds have this formula on CompoundList.

Molar mass
407.47g/mol
Monoisotopic mass
407.1216Da
Atoms
47
Elements
6
Rings plus double bonds
15

The formula C21H18FN5OS describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 1 fluorine atom, 5 nitrogen atoms, 1 oxygen atom 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 × 2161.90%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 184.45%
    1.008 × 18 = 18.144 g/mol
  • F Fluorine × 14.66%
    18.998 × 1 = 18.998 g/mol
  • N Nitrogen × 517.19%
    14.007 × 5 = 70.035 g/mol
  • O Oxygen × 13.93%
    15.999 × 1 = 15.999 g/mol
  • S Sulfur × 17.87%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C21H18FN5OS

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

Showing 1 to 45 of 45 compounds

3-{4-Ethyl-5-[(4-fluorobenzyl)sulfanyl]-4H-1,2,4-triazol-3-yl}-1-phenyl-4(1H)-pyridazinone chemical structure, C21H18FN5OS, CAS 478063-61-5
3-{4-Ethyl-5-[(4-fluorobenzyl)sulfanyl]-4H-1,2,4-triazol-3-yl}-1-phenyl-4(1H)-pyridazinone
CAS 478063-61-5C21H18FN5OS
2-[(2-Fluorobenzyl)thio]-9-pyridin-3-yl-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one chemical structure, C21H18FN5OS, CAS 536982-38-4
2-[(2-Fluorobenzyl)thio]-9-pyridin-3-yl-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one
CAS 536982-38-4C21H18FN5OS
2-((6-(4-Ethylphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)thio)-N-(4-fluorophenyl)acetamide chemical structure, C21H18FN5OS, CAS 894049-18-4
2-((6-(4-Ethylphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)thio)-N-(4-fluorophenyl)acetamide
CAS 894049-18-4C21H18FN5OS
2-[1-(2,4-Dimethylphenyl)pyrazolo[3,4-d]pyrimidin-4-yl]sulfanyl-N-(3-fluorophenyl)acetamide chemical structure, C21H18FN5OS, CAS 893926-00-6
2-[1-(2,4-Dimethylphenyl)pyrazolo[3,4-d]pyrimidin-4-yl]sulfanyl-N-(3-fluorophenyl)acetamide
CAS 893926-00-6C21H18FN5OS
5-Amino-N-[[4-(2-fluoro-3-pyridinyl)phenyl]methyl]-3,4-dimethylthieno[2,3-c]pyridazine-6-carboxamide chemical structure, C21H18FN5OS, CAS 1451993-12-6
5-Amino-N-[[4-(2-fluoro-3-pyridinyl)phenyl]methyl]-3,4-dimethylthieno[2,3-c]pyridazine-6-carboxamide
CAS 1451993-12-6C21H18FN5OS
7-(3-Fluorophenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)thieno[3,2-d]pyrimidin-4(3H)-one chemical structure, C21H18FN5OS, CAS 1242983-81-8
7-(3-Fluorophenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)thieno[3,2-d]pyrimidin-4(3H)-one
CAS 1242983-81-8C21H18FN5OS
3-[(4,6-Dimethylpyrimidin-2-yl)amino]-2-[(3-fluorophenyl)methylsulfanyl]quinazolin-4-one chemical structure, C21H18FN5OS, CAS 422279-60-5
3-[(4,6-Dimethylpyrimidin-2-yl)amino]-2-[(3-fluorophenyl)methylsulfanyl]quinazolin-4-one
CAS 422279-60-5C21H18FN5OS
N-(2,5-Dimethylphenyl)-2-[[3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]sulfanyl]acetamide chemical structure, C21H18FN5OS, CAS 852373-80-9
N-(2,5-Dimethylphenyl)-2-[[3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]sulfanyl]acetamide
CAS 852373-80-9C21H18FN5OS
N-(2,4-Dimethylphenyl)-2-((3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetamide chemical structure, C21H18FN5OS, CAS 852373-81-0
N-(2,4-Dimethylphenyl)-2-((3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetamide
CAS 852373-81-0C21H18FN5OS
N-(2,5-Dimethylphenyl)-2-((3-(3-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetamide chemical structure, C21H18FN5OS, CAS 852374-58-4
N-(2,5-Dimethylphenyl)-2-((3-(3-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetamide
CAS 852374-58-4C21H18FN5OS
N-(2,4-Dimethylphenyl)-2-((3-(3-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetamide chemical structure, C21H18FN5OS, CAS 852374-59-5
N-(2,4-Dimethylphenyl)-2-((3-(3-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetamide
CAS 852374-59-5C21H18FN5OS
N-[2-(6-Benzylsulfanyl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl]-4-fluorobenzamide chemical structure, C21H18FN5OS, CAS 897613-02-4
N-[2-(6-Benzylsulfanyl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl]-4-fluorobenzamide
CAS 897613-02-4C21H18FN5OS
N-(4-Ethylphenyl)-2-[1-(4-fluorophenyl)pyrazolo[3,4-d]pyrimidin-4-yl]sulfanylacetamide chemical structure, C21H18FN5OS, CAS 893935-08-5
N-(4-Ethylphenyl)-2-[1-(4-fluorophenyl)pyrazolo[3,4-d]pyrimidin-4-yl]sulfanylacetamide
CAS 893935-08-5C21H18FN5OS
2-[1-(4-Fluorophenyl)pyrazolo[3,4-d]pyrimidin-4-yl]sulfanyl-N-[(4-methylphenyl)methyl]acetamide chemical structure, C21H18FN5OS, CAS 872856-81-0
2-[1-(4-Fluorophenyl)pyrazolo[3,4-d]pyrimidin-4-yl]sulfanyl-N-[(4-methylphenyl)methyl]acetamide
CAS 872856-81-0C21H18FN5OS
N-(2-(6-((3-Fluorobenzyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide chemical structure, C21H18FN5OS, CAS 872994-27-9
N-(2-(6-((3-Fluorobenzyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide
CAS 872994-27-9C21H18FN5OS
N-(2-(6-((2-Fluorobenzyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide chemical structure, C21H18FN5OS, CAS 872994-39-3
N-(2-(6-((2-Fluorobenzyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide
CAS 872994-39-3C21H18FN5OS
2-((6-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)thio)-N-phenethylacetamide chemical structure, C21H18FN5OS, CAS 894058-13-0
2-((6-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)thio)-N-phenethylacetamide
CAS 894058-13-0C21H18FN5OS
N-(2-Fluorophenyl)-2-{[5-(3-methylphenyl)-4-(1H-pyrrol-1-yl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetamide chemical structure, C21H18FN5OS, CAS 898371-57-8
N-(2-Fluorophenyl)-2-{[5-(3-methylphenyl)-4-(1H-pyrrol-1-yl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetamide
CAS 898371-57-8C21H18FN5OS
N-(4-Fluorobenzyl)-2-((6-(p-tolyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)thio)acetamide chemical structure, C21H18FN5OS, CAS 894064-66-5
N-(4-Fluorobenzyl)-2-((6-(p-tolyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)thio)acetamide
CAS 894064-66-5C21H18FN5OS
N-(2,3-Dimethylphenyl)-2-((3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetamide chemical structure, C21H18FN5OS, CAS 852373-79-6
N-(2,3-Dimethylphenyl)-2-((3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetamide
CAS 852373-79-6C21H18FN5OS
N-(3,5-Dimethylphenyl)-2-{[3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]sulfanyl}acetamide chemical structure, C21H18FN5OS, CAS 852373-82-1
N-(3,5-Dimethylphenyl)-2-{[3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]sulfanyl}acetamide
CAS 852373-82-1C21H18FN5OS
N-(4-Ethylphenyl)-2-{[3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]sulfanyl}acetamide chemical structure, C21H18FN5OS, CAS 852373-84-3
N-(4-Ethylphenyl)-2-{[3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]sulfanyl}acetamide
CAS 852373-84-3C21H18FN5OS
N-(3,5-Dimethylphenyl)-2-((3-(3-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetamide chemical structure, C21H18FN5OS, CAS 852374-60-8
N-(3,5-Dimethylphenyl)-2-((3-(3-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetamide
CAS 852374-60-8C21H18FN5OS
N-(4-Ethylphenyl)-2-{[3-(3-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]sulfanyl}acetamide chemical structure, C21H18FN5OS, CAS 852374-62-0
N-(4-Ethylphenyl)-2-{[3-(3-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]sulfanyl}acetamide
CAS 852374-62-0C21H18FN5OS

Frequently asked questions

What is the molar mass of C21H18FN5OS?

The molar mass of C21H18FN5OS is 407.47 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 1 fluorine atom, 5 nitrogen atoms, 1 oxygen atom and 1 sulfur atom. The monoisotopic mass is 407.1216 Da.

How many compounds have the formula C21H18FN5OS?

CompoundList lists 45 compounds with the molecular formula C21H18FN5OS, including 3-{4-Ethyl-5-[(4-fluorobenzyl)sulfanyl]-4H-1,2,4-triazol-3-yl}-1-phenyl-4(1H)-pyridazinone, 2-[(2-Fluorobenzyl)thio]-9-pyridin-3-yl-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one, 2-((6-(4-Ethylphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)thio)-N-(4-fluorophenyl)acetamide. 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 C21H18FN5OS?

C21H18FN5OS 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.