Published online by MDPI (Molecular Diversity Preservation International), the International Journal of Molecular Sciences has posted its first issue as of January 2000. This peer-reviewed quarterly aims to provide "an advanced forum for chemistry, molecular physics (chemical physics and physical chemistry) and molecular biology," while also publishing reviews and short notes. The first issue is brief, and currently, the journal is calling for papers. The journal is free for the time being. To gain access, users are required send in an email to obtain a free user-ID and password.