Carboxymethyl group-containing modified hyaluronic acid and / or a salt thereof and a method for producing the same

摘要

The method for producing a crosslinked product of carboxymethyl group-containing modified hyaluronic acid includes a step of maintaining a solution of carboxymethyl group-containing modified hyaluronic acid and / or a salt thereof at −200 ° C. or higher and 10 ° C. or lower.