Seikagaku Corp. manufactures pharmaceuticals and medical devices with glycoconjugates; specifically, glycosaminoglycans (GAG) such as hyaluronic acid; as well as enzymes that act on GAG. It operates through the following segments: Pharmaceuticals and Limulus Amebocyte Lysate (LAL). The Pharmaceuticals segment develops and supplies intra-articular injections for improving joint functions, cross-linked hyaluronate hydrogel for knee osteoarthritis, opthalmic surgical aids, and surgical aids for endoscopic mucosal resection. The LAL segment manufactures and sells endotoxin-detecting reagents in Japan and overseas. The company was founded on June 2, 1947 and is headquartered in Tokyo, Japan.