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Molecular formula

C21H15ClO

8 compounds have this formula on CompoundList.

Molar mass
318.80g/mol
Monoisotopic mass
318.0811Da
Atoms
38
Elements
4
Rings plus double bonds
14

The formula C21H15ClO describes a molecule made of 21 carbon atoms, 15 hydrogen atoms, 1 chlorine atom and 1 oxygen 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 × 2179.12%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 154.74%
    1.008 × 15 = 15.120 g/mol
  • Cl Chlorine × 111.12%
    35.45 × 1 = 35.450 g/mol
  • O Oxygen × 15.02%
    15.999 × 1 = 15.999 g/mol
Look up another formula

Compounds with the formula C21H15ClO

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

Showing 1 to 8 of 8 compounds

10-Chloro-7,7-dimethyl-7H-fluoreno[4,3-b]benzofuran chemical structure, C21H15ClO, CAS 1567814-82-7
10-Chloro-7,7-dimethyl-7H-fluoreno[4,3-b]benzofuran
CAS 1567814-82-7C21H15ClO
Chalcone, 3-chloro-4'-phenyl- chemical structure, C21H15ClO, CAS 13662-61-8
Chalcone, 3-chloro-4'-phenyl-
CAS 13662-61-8C21H15ClO
4-Chloro-4'-phenylchalcone chemical structure, C21H15ClO, CAS 13662-60-7
4-Chloro-4'-phenylchalcone
CAS 13662-60-7C21H15ClO
Chalcone, 2-chloro-4'-phenyl- chemical structure, C21H15ClO, CAS 1539275-16-5
Chalcone, 2-chloro-4'-phenyl-
CAS 1539275-16-5C21H15ClO
3-(2-Chlorophenyl)-1-(4-phenylphenyl)prop-2-en-1-one chemical structure, C21H15ClO, CAS 13650-77-6
3-(2-Chlorophenyl)-1-(4-phenylphenyl)prop-2-en-1-one
CAS 13650-77-6C21H15ClO
9-Chloro-7,7-dimethyl-7H-fluoreno[4,3-b]benzofuran chemical structure, C21H15ClO, CAS 1374677-42-5
9-Chloro-7,7-dimethyl-7H-fluoreno[4,3-b]benzofuran
CAS 1374677-42-5C21H15ClO
11-Chloro-7,7-dimethyl-7H-fluoreno[4,3-b]benzofuran chemical structure, C21H15ClO, CAS 1882117-82-9
11-Chloro-7,7-dimethyl-7H-fluoreno[4,3-b]benzofuran
CAS 1882117-82-9C21H15ClO
1-Chloro-7,7-dimethyl-7H-fluoreno[2,3-b]benzofuran chemical structure, C21H15ClO, CAS 2128745-53-7
1-Chloro-7,7-dimethyl-7H-fluoreno[2,3-b]benzofuran
CAS 2128745-53-7C21H15ClO

Frequently asked questions

What is the molar mass of C21H15ClO?

The molar mass of C21H15ClO is 318.80 g/mol, calculated from standard atomic weights for 21 carbon atoms, 15 hydrogen atoms, 1 chlorine atom and 1 oxygen atom. The monoisotopic mass is 318.0811 Da.

How many compounds have the formula C21H15ClO?

CompoundList lists 8 compounds with the molecular formula C21H15ClO, including 10-Chloro-7,7-dimethyl-7H-fluoreno[4,3-b]benzofuran, Chalcone, 3-chloro-4'-phenyl-, 4-Chloro-4'-phenylchalcone. 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 C21H15ClO?

C21H15ClO has a degree of unsaturation of 14. 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.