Elsevier MDL has delivered ahead of schedule the initial release of a major electronic lab notebook (ELN) initiative announced in March 2005. MDL® Notebook gives scientists a central hub to simplify their work, capture data, document processes and make essential information available throughout a research organization. Additional releases planned for 2006 and beyond will expand capabilities for scientific disciplines, building on MDL informatics and integration strengths to deliver comprehensive workflow solutions for researchers.