Molecular formula

C₂₁H₁₆FN₅OS

12 compounds have this formula on CompoundList.

Molar mass: 405.45g/mol
Monoisotopic mass: 405.1060Da
Atoms: 45
Elements: 6
Rings plus double bonds: 16

The formula C21H16FN5OS describes a molecule made of 21 carbon atoms, 16 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 × 2162.21%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 163.98%
1.008 × 16 = 16.128 g/mol
F Fluorine × 14.69%
18.998 × 1 = 18.998 g/mol
N Nitrogen × 517.27%
14.007 × 5 = 70.035 g/mol
O Oxygen × 13.95%
15.999 × 1 = 15.999 g/mol
S Sulfur × 17.91%
32.06 × 1 = 32.060 g/mol

Look up another formula

Compounds with the formula C21H16FN5OS

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

Showing 1 to 12 of 12 compounds

(4E)-4-[(4-Fluorophenyl)hydrazinylidene]-2-phenyl-5-(pyridin-2-ylsulfanylmethyl)pyrazol-3-one

CAS 372185-00-7C₂₁H₁₆FN₅OS

N-(2-Fluorophenyl)-2-[6-(4-pyrazol-1-ylphenyl)pyridazin-3-yl]sulfanylacetamide

CAS 1004185-67-4C₂₁H₁₆FN₅OS

N-(4-Fluorophenyl)-2-[6-(4-pyrazol-1-ylphenyl)pyridazin-3-yl]sulfanylacetamide

CAS 1004185-72-1C₂₁H₁₆FN₅OS

2-((3-(3-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)-1-(indolin-1-yl)ethanone

CAS 852374-52-8C₂₁H₁₆FN₅OS

2-((3-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)-1-(indolin-1-yl)ethanone

CAS 852373-73-0C₂₁H₁₆FN₅OS

1-(2,3-Dihydroindol-1-yl)-2-[1-(4-fluorophenyl)pyrazolo[3,4-d]pyrimidin-4-yl]sulfanylethanone

CAS 872856-72-9C₂₁H₁₆FN₅OS

N-(4-Fluorophenyl)-2-[6-(4-imidazol-1-ylphenyl)pyridazin-3-yl]sulfanylacetamide

CAS 905669-11-6C₂₁H₁₆FN₅OS

4-Fluoro-N-[[2-(4-methylphenyl)benzotriazol-5-yl]carbamothioyl]benzamide

CAS 381700-67-0C₂₁H₁₆FN₅OS

2-((6-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)thio)-1-(indolin-1-yl)ethanone

CAS 894058-69-6C₂₁H₁₆FN₅OS

N-[6-(4-Fluorophenyl)imidazo[2,1-b]thiazol-5-yl]-2-methyl-1H-benzimidazole-1-acetamide

CAS 1209203-11-1C₂₁H₁₆FN₅OS

N-(4-Fluorophenyl)-2-{[6-(4-phenyl-1H-imidazol-1-yl)pyridazin-3-yl]sulfanyl}acetamide

CAS 1251671-07-4C₂₁H₁₆FN₅OS

4-Fluoro-N-[(6-methyl-2-phenylbenzotriazol-5-yl)carbamothioyl]benzamide

CAS 428490-91-9C₂₁H₁₆FN₅OS

Frequently asked questions

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What is the molar mass of C21H16FN5OS?

The molar mass of C21H16FN5OS is 405.45 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms, 1 fluorine atom, 5 nitrogen atoms, 1 oxygen atom and 1 sulfur atom. The monoisotopic mass is 405.1060 Da.

How many compounds have the formula C21H16FN5OS?

CompoundList lists 12 compounds with the molecular formula C21H16FN5OS, including (4E)-4-[(4-Fluorophenyl)hydrazinylidene]-2-phenyl-5-(pyridin-2-ylsulfanylmethyl)pyrazol-3-one, N-(2-Fluorophenyl)-2-[6-(4-pyrazol-1-ylphenyl)pyridazin-3-yl]sulfanylacetamide, N-(4-Fluorophenyl)-2-[6-(4-pyrazol-1-ylphenyl)pyridazin-3-yl]sulfanylacetamide. 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 C21H16FN5OS?

C21H16FN5OS has a degree of unsaturation of 16. 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.