Question

Write the IUPAC name of ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3$.

Answer 1

IUPAC name:

• IUPAC (International Union for Pure and Applied Chemistry) name is a worldwide used chemical name.
• There are certain rules for naming different chemical compounds.

Naming the given compound:

The general formula for naming the compound is $\mathrm{Locant}+\mathrm{prefix}+\mathrm{Root}+\mathrm{Locant}+\mathrm{Suffix}$

Step 1: Finding the number of the carbon atoms

• The longest carbon chain is a straight-chain and it contains four carbon atoms so, the root word is but-. $\mathrm{C}-\mathrm{C}-\mathrm{C}-\mathrm{C}$

Step 2: Finding locants and positioning

• There are no locants. So, no need to tell them the position.

Step 3: Finding functional groups

• There are no substituents or functional groups present,
• so the general primary suffix -ane should be used as no double or triple bond is present and no secondary suffix is there.
• $\mathrm{Locant}+\mathrm{prefix}+\mathrm{Root}+\mathrm{Locant}+\mathrm{Suffix}$here no locant and prefix are there so, only Root and suffix - butane
• The IUPAC name of ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3$ is n-butane.