To develop and validate simple, precise, and eco-friendly UV spectrophotometric methods for the simultaneous estimation of etoricoxib (ETO) and tramadol hydrochloride (TRA) in combined dosage form.

We are providing an unedited version of this manuscript to give early access to its findings. Before final publication, the manuscript will undergo further editing. Please note there may be errors ...

Grade school math students are likely familiar with teachers admonishing them not to just guess the answer to a problem. But a new proof establishes that, in fact, the right kind of guessing is ...