Beijing Chemsynlab Pharmaceutical Science & Technology Co. Ltd., focuses on R&D of pharmaceuticals and intermediates, especially on carbohydrate-based drugs and carbohydrate chemistry since founded. Chemsynlab can supply the following carbohydrate-based drugs including Teniposide, Tribenoside, Ranimustine, Arvigol, Therafectin, Aurothioglucose, Sucrose Octaacetate, Fludeoxyglucose (18F), and so on. Chemsynlab also offers the synthesis of other carbohydrate intermediates from milligram to ton scale. Chemsynlab has developed and diversified into many areas of carbohydrate research and synthesis by now. Many products involving carbohydrate building blocks can be supplied by us, such as actived sugar donors including trichloroacetimidates, thioglycosides , acetylglycosyl halides and phosphates, glycals, sugar anhydrides, deoxy derivatives, amino sugars, uronic acid derivatives, alditols, glycosides and oligosaccharides, etc. These can facilitate customers in their synthesizing work. Custom synthesis for carbohydrates and its derivatives or related compounds is indeed appreciated. At the same time we have the ability to meet the new challenges in the areas of carbohydrate chemistry to a great extent. Chemical abstract database from internet are sci-finder and belstain. Full text database include ACS, Elsevier, willey, and so forth. The NMR and MS instruments are often applied to indentify the structures of the intermediates or final products. Besides this, HPLC and GC are also utilized to guarantee the quality of the compounds. The purity of our substances is on average between 97-99 % (HPLC).