Chengdu Alfa Biotechnology Co.,Ltd. is a leading supplier of phytochemical reference standards for regulatory filing and quality testing or early stage R&D,professional in extraction, synthesis and purification. We are constantly expanding, having developed our operations globally. With more than 1,000 products in stock, Alfa Biotechnology has developed a strong global customer base across leading research institutes, universities, contract research organizations and large pharmaceutical and biotech companies. Our main services: 1. Phytochemical reference standards from MG to G 2.Chinese herbal medicine compounds library for drug screening 3.Plant Extracts 4.Contract Research and Custom Isolation on demand Working with us means quality products at best prices with a superio..