Abstract: This study prepared glucosamine sulfate with glucosamine hydrochloride marked by radio isotope and observed the osmosis ability of glucosamine sulfate passing through skin in vitro of test animal. The infrared ray assay results showed that the structure of glucosamine sulfate marked by radio isotope is same as standard. Isotope tracer technique showed that glucosamine sulfate above can pass through the skin in vitro of test animal in a diffusion cell and osmose into subcutaneous tissue.

Key words: glucosamine, radioisotopes, isotopic tracing, diffusion cell