Profile: Sichuan Guanghan Bio-Tech Co., Ltd offers pharmaceutical intermediates. We produce piperidine series, piperazine series and pyrrolidine series. Our hydroxy camptothecin includes hydroxy camptothecin, 10-hydroxycamptothecin, 7-elthyl-10-hydroxycamptothecin and irinotecan hydrochloride. Our irinotecan is a water soluble, semi-synthetic analogue of 20(s) camptothecin, which causes cell toxicity by stabilizing a ternary complex. Our camptothecin is a quinoline-based alkaloid found in the barks of the chinese camptotheca tree and the asian nothapodytes tree. We supply soy isoflavone of natural or synthetic source, containing isoflavone from 10% to 80%.