Degree of Unsaturation Calculator

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**Degree of Unsaturation Calculator** calculates the total number of multiple bonds plus rings.Below is given a default molecule formula propadiene(C3H4), click on "Calculate Degree of Unsaturation" to calculate degree of unsaturation.

**Step 1 :**

**Step 2 :**

The task of drawing isomers for a particular formula can be made easier by comparing the number of hydrogen's with the number of carbons in the formula. Such a calculation allows the calculation of the degree of unsaturation.

Knowing the number of degrees of unsaturation in a molecule is useful because this number gives an indication of how many double bonds are present in an unknown compound.

Knowing the number of degrees of unsaturation in a molecule is useful because this number gives an indication of how many double bonds are present in an unknown compound.

Read the probelm carefully and observe the number of double and triple bonds in the given compound.

Apply the formula to calculate the degree of unsaturation.

Degree of Unsaturation = (Total Number of Double Bonds) + (2 x Total Number of Triple Bonds) + (Total Number of Rings)

Calculate the degree of unsaturation for the formula C

_{8}H_{13}BrO.**Step 1 :**The given molecular formula of the compound is C

_{8}H_{13}BrO.**Step 2 :**Br counts as an H and O can be ignored, so calculate as though the formula were C

_{2}H_{14}.

Degree of unsaturation = $\frac{1}{2}$ [(2)(8)+2-14] = 2**Answer :**The degree of unsaturation for the given compound is 2.

Determine the degrees of unsaturation for the following structure.

**Step 1 :**The molecule given is tryptophan.

- Number of double bonds = 5
- Number of triple bonds = 0
- Number of rings = 2

**Step 2 :**Apply the formula.

Degree of Unsaturation = (Total Number of Double Bonds) + (2 x Total Number of Triple Bonds) + (Total Number of Rings)

Degree of Unsaturation = 5 + (2 $\times$ 0) + 2

Degree of Unsaturation = 7

**Answer :**The total degrees of unsaturation of the given molecule tryptophan is 7.