1.White crystalline powder 2. Pharmaceuticals Specifications1.The product is white crystalline powder, odorless or nearly odorless, bitter in taste, freely soluble in water or ethanol, dissolvable in glycerin.2.It belongs to Vitamin B, participating in metabolism in the body, can be used to prevent pellagra or other niacin defection disease.Avoid skin disease and alimentary canal disease.3. ...