Organic Chemistry is among three common branches of Chemistry.  The other two are Physical Chemistry and Inorganic Chemistry. In Organic Chemistry, we study all the organic compounds found on earth. There are a number of organic compounds which have been named according to the properties and presence of other element atoms combined with carbon atoms. So  it is very important to remember all the formulas mentioned in your book to secure good marks in the examination on Organic Chemistry. There are various study materials available on Vedantu to make it easy to remember all the chemical symbols and formulas for organic compounds.