(4R,12aS)-7-Methoxy-4-methyl-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2H-[1,3]oxazino[3,2-d]pyrido[1,2-a]pyrazine-9-carboxylic acid

Shanghai Yingrui Biopharma Co., Ltd. is a high-tech pharmaceutical and chemical product enterprise which specializes in R & D, production and sales of API and intermediates. The company has always been dedicated to R & D and production of antiviral and anti-tumor drugs, etc. The company is equipped with advanced production equipment and detection equipment. So far it has established stabilized production lines for multiple products, thus being able to satisfy clients’ demands ranging from R & D to production. The company's products are sold to European, American and Southeastern countries and regions. Meanwhile, it has established mutual-benefit, reciprocal and win-win partnership with a great number of well-known pharmaceutical and chemical enterprises in the world. Yingrui has a technical backbone team with rich experience and high professional technological level. Therefore, it has remarkable pharmaceutical product R & D and industrialization abilities. The company has set up a standard management system and owns varied advanced detection devices such as liquid phase, mass spectrum and infrared instrument, thus controlling the entire process from purchase of raw materials to final production. Our perfect quality detection and quality control systems make sure that we provide stable high-quality products for the markets. Based on concepts of “people oriented and technological innovation” and principles of “outstanding quality, integrity and win-win scenario”, Yingrui sincerely looks forward to your attention, instruction and help as well as cooperation of good faith and win-win development with you!