Molecular formula

C₁₃H₈O

19 compounds have this formula on CompoundList.

Molar mass: 180.21g/mol
Monoisotopic mass: 188.1077Da
Atoms: 22
Elements: 3
Rings plus double bonds: 10

The formula C13H8O describes a molecule made of 13 carbon atoms, 8 hydrogen atoms 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 × 1386.65%
12.011 × 13 = 156.143 g/mol
H Hydrogen × 84.47%
1.008 × 8 = 8.064 g/mol
O Oxygen × 18.88%
15.999 × 1 = 15.999 g/mol

Look up another formula

Compounds with the formula C13H8O

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

Showing 1 to 19 of 19 compounds

Fluorenone

CAS 486-25-9C₁₃H₈O

Phenalenone

CAS 548-39-0C₁₃H₈O

Acenaphthylene-1-carbaldehyde

CAS 96462-56-5C₁₃H₈O

6-Ethynylnaphthalene-2-carbaldehyde

CAS 2255339-66-1C₁₃H₈O

7-Phenyl-2,4,6-heptatriyn-1-ol

CAS 60214-15-5C₁₃H₈O

1H-Benz[f]inden-1-one

CAS 159113-90-3C₁₃H₈O

9H-Fluorenone-D8

CAS 137219-34-2C₁₃H₈O

2-Propyn-1-one, 1-(2-naphthalenyl)-

CAS 404839-10-7C₁₃H₈O

3-(1-Naphthalenyl)-2-propynal

CAS 16176-23-1C₁₃H₈O

12-Tridecene-4,6,8,10-tetraynal

CAS 28789-45-9C₁₃H₈O

7-Phenylhept-2-ene-4,6-diynal

CAS 20252-42-0C₁₃H₈O

8H-Fluoreno[1,2-b]oxirene

CAS 249-17-2C₁₃H₈O

3H-Benz(cd)azulen-3-one

CAS 94771-34-3C₁₃H₈O

3H-Cyclopenta[A]azulen-3-one

CAS 140666-49-5C₁₃H₈O

7H-Benzo[3,4]cyclobuta[1,2]cyclohepten-7-one

CAS 61765-33-1C₁₃H₈O

6H-Benzo[3,4]cyclobuta[1,2]cyclohepten-6-one

CAS 55386-28-2C₁₃H₈O

2H-Cyclopenta[6,7]naphtho[2,3-b]oxirene

CAS 287-00-3C₁₃H₈O

2-(Non-1-ene-3,5,7-triyn-1-yl)furan

CAS 77319-34-7C₁₃H₈O

9H-Fluoren-9-one-D4

CAS 952573-42-1C₁₃H₈O

Frequently asked questions

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What is the molar mass of C13H8O?

The molar mass of C13H8O is 180.21 g/mol, calculated from standard atomic weights for 13 carbon atoms, 8 hydrogen atoms and 1 oxygen atom. The monoisotopic mass is 188.1077 Da.

How many compounds have the formula C13H8O?

CompoundList lists 19 compounds with the molecular formula C13H8O, including Fluorenone, Phenalenone, Acenaphthylene-1-carbaldehyde. 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 C13H8O?

C13H8O has a degree of unsaturation of 10. 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.