ChemSketch - Version 5.0 Quickly and easily draw molecules in a chemistry-oriented interface. Instantly calculate the chemical formula, molecular weight, percentage composition. Predict several liquid properties such as density and refractive index. Customize display properties, e.g., atom numbering, chemical symbols, and valence. Draw reactions, schematic diagrams and design other chemistry-related reports and presentations. Work with structures, text and graphics simultaneously and transfer to any OLE-supported software.