Condensed Structural Formula

Condensed Structural Formula

The Condensed Structural Formula, in its simplest form, is a method for expressing organic compounds in a single line of text. Students basically write them in shorthand notation that carries more information than the chemical formula. The Condensed Structural Formula is shorter than the full structural formula, which is an important point to keep in mind.

 In other words, students just write down a single line that lists the atoms in the molecule in the order that they are found. Additionally, it will assist in illuminating the functional groups present in the molecule.

In order to demonstrate that polyatomic groups are members of the same chain, amine (NH2), alcohol (OH), and parenthesis are used. For instance, propanol is CH3 (CH2)2OH, and methane has the Condensed Structural Formula CH4.

Students can assert that each carbon atom is represented individually in the Condensed Structural Formula as a result. Additionally, the carbon atoms that link to that particular carbon atom are placed next to the atoms that follow. In a manner similar to a chemical process, the first carbon atom is made up of three hydrogen atoms that are joined together, while the second carbon atom has two hydrogen atoms, the third carbon atom has three hydrogen atoms, and the fourth carbon atom has three hydrogen atoms.

When there are 2 CH2 groups in the centre of the molecule and (CH2)2 appears in the middle of the structural formula, this is another example of a more concise way to write a Condensed Structural Formula.

 Condensed Structural Formula 

The number of times a group of atoms appears at that point in the given molecule is indicated by the subscript number written to the right of the final bracket. When there is a group of atoms bonded to a chain, the groups are enclosed in parenthesis (round brackets). In a Condensed Structural Formula, double and/or triple covalent bonds between carbon atoms are typically shown for clarity, even though covalent links are typically not indicated. Atoms that are bonded to one another and are of the same type are consistently grouped together. A Condensed Structural Formula is also referred to as a “linear formula” if it is written in a line that depicts covalent bonding.


 It becomes crucial to understand the differences between the three types of organic chemistry formulas in order to prevent any confusion or other problems. 

  • Molecular Formula (it displays the number of atoms in each element) C5H12O
  • The simplified structural equation (which shows all of the atoms while still recognising vertical bonds and polyatomic groups) is enclosed in parenthesis.
  • The Condensed Structural Formula (shows all the bonds)


The ability to visualise a molecule’s functional groups is especially useful. In actuality, all molecules’ chemical and physical properties are imparted by their functional groups. This is done so that a chemist can estimate the behaviour of compounds using their knowledge of the quantity and kind of functionality of these groups.

The geometry of some molecules is also shown in the Condensed Structural Formula. Similarly, it is a crucial component in recognising a chemical compound’s properties.

 Solved Example for You 

There are so many examples that a student may use to understand the Condensed Structural Formula. Students must try to understand the properties of chemical compounds and elements and then understand them accordingly.

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