Fig. 4
From: “Molecular Anatomy”: a new multi-dimensional hierarchical scaffold analysis tool
Augmented scaffold rules to identify the longest atom path: in the first step, all terminal non carbon atoms with a bond order equal to 1 are removed, in the second step the longest carbon chain ending with a carbon atom is identified. Three examples explain some possible cases (a) three different paths can be identified and the longest is retained (the first); b three paths can be identified two of them are the longest with the same length and the first identified is retained; c only one path can be identified