Abstract
1. A group mucopolysaccharide preparation from pig stomach mucus, which had the minimum molecular weight of 3500 as calculated from its iodine use, contained approximately seven molecules of hexo-samine, five molecules of galactose, two molecules of L-fucose, one molecule each of sialic acid, aspartic and glutamic acids, serine and alanine and amounts lesser than one molecule of various amino acids for a unit mole-cule corresponding to the minimum molecular weight.
2. The group mucopolysaccharide was subjected to oxidation with hypoiodite, hydrolysis with acetic acid and treatment with mercuric chloride, and the partially degraded product by acetic acid also to the treatment with hypoiodite. And the products were examined scrupu-lously.
3. The structure of the reducing residue of the carbohydrate moiety and its neighbourhood in the unit molecule is suggested.
