Established in 1964 and headquartered in Zhaoqing, China, Star Lake Bioscience Co., Inc. specializes in the production and global distribution of pharmaceutical ingredients, as well as food and animal feed additives. Its extensive product catalog includes guanosine, which serves as a crucial intermediate for both food and pharmaceutical applications. The company also manufactures L-proline, a vital intermediate for synthesizing captopril and enalapril, and a raw material used in amino acid transfusions. Another key offering is Adefovir dipivoxil tablets, formulated to combat Hepatitis B by inhibiting HBV DNA polymerase activity and disrupting the virus's DNA. Additionally, L-threonine is provided for its application in animal feed premixes, particularly for pigs and poultry. Star Lake Bioscience further supplies disodium 5'-ribonucleotide, utilized in the treatment of chronic hepatitis, muscular atrophy, and certain eye conditions. Similarly, disodium 5-inosinate addresses issues like leukopenia, thrombocytopenia, and both acute and chronic hepatitis. Inosine is another significant product, prescribed for various ailments including chronic hepatitis, heart disease, low white blood cell or platelet counts, and central choroidoretinitis. Furthermore, disodium 5'-guanylate finds application in food preservation, such as for canned meats, ham, and other salted meat products. The company's broad portfolio also features compounds such as ribavirin, adenosine, adenine, memantine hydrochloride, arginine, D-ribose, fructose syrup, L-valine, and L-lysine, among others. These diverse offerings are marketed under the proprietary brands Star Lake and Yue Bao.