Chemical graph theory advantages

Graph theory provided various fields of physical chemistry and chemical physics with a technique that has been extensively used in theoretical physics (the well-known Feynman diagram technique). It also appeared to be extremely effective in both chemical kinetics and chemical polymer physics. The major advantage of this technique is the extremely simple derivation of equations and the possibility of their direct physical interpretation. 

One method of creating new reactions is by the use of chemical transforms. These can be simple transforms, based solely on graph theory or general and well-understood chemistry. A more ambitious approach would be to use one of the available retrosynthesis programs mentioned previously these systems have the advantage of far more sophisticated transform descriptions, in many cases representing many millions of dollars in development. In either case, the reactions are created by the following steps ... 

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