... and structure of lactone. It can be used as advantage methyl donor in synthesis of protein, and adjust osmotic pressure ... hygroscopic particles, pH=0.8~1.2.Action Mechanism:l Supply methyl donor in synthesis of protein and other physiological and ... substance for lysine, threonine, glutamate, VB2 and VB12Application Scope: l Livestock, poultry, rare bird and aquatic animall Nutrient substance of ...