FIELD: affine ligands for sorbents making. SUBSTANCE: N-maleylated chitosan of molecular mass (3-350) x (3-350)·103 is treated with sodium pyrosulfate at molar ratio 1:(1-9), respectively, in aqueous solution, at pH 3.5-6.5, at 30-75 C for 0.5-5.5 hr. Low-molecular impurities were removed, and the end product is isolated. Product is used for sorbent making used for prophylaxis and treatment of patients with atherosclerosis, ischemia cardiodisease, hypercholesterolemia, etc. EFFECT: improved method of sulfated chitosan preparing. 1 tbl
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