Lab Notebook is an electronic laboratory notebook for chemists. The notebook consists of two databases, the notebook itself and a reagents database. The reagents database contains the structures, name, MWt, density and safety information on over 13,000 compounds that can be used as reagents. Entering the name of a reagent into the notebook causes the rest of the information to be "looked up" from the reagents database. Automated calculation of amounts based on stoichiometry and a library of reaction "phrases"