Chemical-pharmaceutical analysis may be defined as a procedure or the sequences of progressions to identify or quantify a constituent or drug, the mechanisms of a pharmaceutical solution or fusion or the determination of the structures of chemical combinations used in the formulation of pharmaceutical product. Open Access to the scientific literature means the removal of barriers (including price barriers) from accessing scholarly work. there are two parallel roads towards open access: open access articles and self-archiving. Open Access articles are immediately, freely available on their web site, a model mostly funded by charges paid by the author (usually through a research grant). The alternative for a researcher is self-archiving (i.e., to publish in a traditional journal, where only subscribers have immediate access, but to make the article available on their personal and/or institutional web sites (including so-called repositories or archives)), which is a practice allowed by many scholarly journals. Open Access raises practical and policy questions for scholars, publishers, funders, and policymakers alike, including what the return on investment is when paying an article processing fee to publish in an open access articles, or whether investments into institutional repositories should be made and whether self-archiving should be made mandatory, as contemplated by some funders.