The document outlines a case study for Sanofi-Aventis's brand name development of Lantus, a 24-hour long-lasting insulin. A list of over 90 potential brand names was narrowed down to eight finalists after rigorous analysis, with 'Lantus' ultimately being recommended due to its strong positive feedback from physicians, pharmacists, and patients. The name conveyed convenience, reliability, and modernity, resonating well with respondents and aligning with the brand's goals.