Absolute difference between all assay values for freshly prepared and stored sample solutions at room temperature for 24 h was not more than 2.0%. The study shows that solution was stable up to 24 h. The proposed method was applied for determination of content of imiquimod in the marketed KU-55933 cost samples of Imiquimod cream. Imiquimod cream samples from different

manufacturers were purchased from market and analyzed for the amount of imiquimod using this proposed method. Results of analysis matched with percent label claim of marketed creams. Literature survey reveals that there is no method reported for determination of imiquimod content from Imiquimod cream using reverse phase HPLC. Retention time of Imiquimod is about 3.0 min and

total run time is only 5 min. Very few methods are reported for imiquimod API and some biological samples but no any method reported for topical preparation (cream samples). The proposed method was found accurate, simple, precise, rapid and economical. Method validation parameters meet the specifications laid down in ICH guidelines. Hence, the method can be easily and conveniently adopted for routine analysis of imiquimod content in imiquimod cream. All authors have none to declare. Department of Chemistry, Karmveer Bhaurao Patil Mahavidyalaya, Pandharpur, Maharashtra, India, affiliated to Solapur University, Solapur is gratefully acknowledged for providing resources for the project. “
“Controlled release technology now forms the essence of modern see more and future drug delivery system for last several decades in terms of clinical efficacy and patient compliances.1 Sodium alginate 3-mercaptopyruvate sulfurtransferase has been used as a matrix material to achieve controlled-release drug delivery due to its hydrogel-forming properties.2 and 3 The ability of alginate sodium salt, to rapidly form viscous solutions and gels on contact with aqueous media has been exploited by the pharmaceutical industry in sodium alginate’s wide application as a carrier in hydrophilic matrix controlled release oral dosage forms. Matrices incorporating alginate salts have

been employed to successfully prolong the release of many drugs.4, 5 and 6 Recent trends indicate that multiparticulate drug delivery systems are especially suitable for achieving controlled or delayed release oral formulations with low risk of dose dumping, flexibility of blending to attain different release patterns as well as reproducible and short gastric residence time.7 and 8 Floating drug delivery system belongs to oral controlled drug delivery system group that are capable of floating in the stomach by bypassing the gastric transit. These dosage forms are also defined as gas powered system (GPS), which can float in the contents of the stomach and release the drug in a controlled manner for prolonged periods of time. The release rate will be controlled depending upon the type and concentration of the polymer that swells, leads to diffusion and erosion of the drug.