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).