L-HYSTIDINE PF is a white crystalline powder that is freely soluble in water and soluble in formic acid. L-HYSTIDINE PF contains not less than 98.5 percent and not more than 101.0 percent of L-HYSTIDINE (C6H9N3O2). L-HYSTIDINE PF is commonly used in the food industry as it is an essential amino acid that plays an important role in various metabolic processes. L-HYSTIDINE PF helps support growth and development in food applications.