Molecular formula

C₅H₈O

126 compounds have this formula on CompoundList.

Molar mass: 84.12g/mol
Monoisotopic mass: 92.1077Da
Atoms: 14
Elements: 3
Rings plus double bonds: 2

The formula C5H8O describes a molecule made of 5 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 × 571.39%
12.011 × 5 = 60.055 g/mol
H Hydrogen × 89.59%
1.008 × 8 = 8.064 g/mol
O Oxygen × 119.02%
15.999 × 1 = 15.999 g/mol

Look up another formula

Compounds with the formula C5H8O

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

Showing 101 to 126 of 126 compounds

(E)-1-Propenylvinylether

CAS 24268-10-8C₅H₈O

(1S,2S)-2-Methylcyclopropane-1-carbaldehyde

CAS 394735-00-3C₅H₈O

2-(1-Propenyl)oxirane

CAS 6790-41-6C₅H₈O

(Z)-3-Pentenal

CAS 53448-06-9C₅H₈O

5-Oxaspiro[2,3]hexane

CAS 157-46-0C₅H₈O

(1R,2S)-2-Methylcyclopropane-1-carbaldehyde

CAS 139765-03-0C₅H₈O

Penta-3,4-dien-2-ol

CAS 17615-19-9C₅H₈O

2-Methyl-D3-3-butyn-1,1,1-D3-2-ol

CAS 57444-27-6C₅H₈O

3-Methoxybuta-1,2-diene

CAS 50285-32-0C₅H₈O

1,2-Epoxy-1-methyl-cyclobutane

CAS 1942-43-4C₅H₈O

Bicyclo[1.1.0]butan-1-ylmethanol

CAS 4935-02-8C₅H₈O

(2-Methylcycloprop-2-en-1-yl)methanol

CAS 1407593-23-0C₅H₈O

Oxirane, 2-ethenyl-2-methyl-, (2S)-

CAS 86832-97-5C₅H₈O

(1S,2R)-2-Methylcyclopropane-1-carbaldehyde

CAS 397266-17-0C₅H₈O

3-Hydroxy-2-methylcyclobutene

CAS 54623-39-1C₅H₈O

(Cyclobut-2-en-1-yl)methanol

CAS 15963-49-2C₅H₈O

Spiro[2.2]pentan-1-ol

CAS 68423-22-3C₅H₈O

cis-Bicyclo[2.1.0]pentan-5-ol

CAS 33067-62-8C₅H₈O

(2R)-2-Cyclopropyloxirane

CAS 134511-25-4C₅H₈O

(2S)-2-Cyclopropyloxirane

CAS 2227858-88-8C₅H₈O

(E)-2-Cyclopropylethen-1-ol

CAS 219809-30-0C₅H₈O

1-Cyclopropylethan-1-one-2,2,2-d3

CAS 14671-01-3C₅H₈O

(s)-2-Allyloxirane

CAS 144422-61-7C₅H₈O

(2R)-2-(Prop-1-en-2-yl)oxirane

CAS 154961-94-1C₅H₈O

Frequently asked questions

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What is the molar mass of C5H8O?

The molar mass of C5H8O is 84.12 g/mol, calculated from standard atomic weights for 5 carbon atoms, 8 hydrogen atoms and 1 oxygen atom. The monoisotopic mass is 92.1077 Da.

How many compounds have the formula C5H8O?

CompoundList lists 126 compounds with the molecular formula C5H8O, including (E)-1-Propenylvinylether, (1S,2S)-2-Methylcyclopropane-1-carbaldehyde, 2-(1-Propenyl)oxirane. 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 C5H8O?

C5H8O has a degree of unsaturation of 2. 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.