https://doi.org/10.1351/goldbook.M03694
That linear chain to which all other chains, long or short or both, may be regarded as being pendant.
Note:
Where two or more chains could equally be considered to be the main chain, that one is selected which leads to the simplest representation of the molecule.
Where two or more chains could equally be considered to be the main chain, that one is selected which leads to the simplest representation of the molecule.