Description of SDL Component Suite - ChemPack :
The package ChemPack offers various routines and classes around chemistry and chemical structures. It provides elementary data as well as routines to work with molecular and structural formulas. In addition, a unit to display chemical structures is included. Please note, that the package ChemPack requires both the BasePack and the MathPack package of the SDL Component Suite. Thus you have to install these two packages before installing ChemPack.