A white to yellowish white crystal or crystalline powder; Odorless or with slightly smell; slightly bitter taste. Its soluble in hot water, hot ethanol, diluted hydrochloric acid and alkaline hydroxide solution. Applications: Feed additive; complex amino acids infusion. CAS No. 73-22-3 Synonyms: (S)-2-Amino-3-(3-indolyl) propionic acid, L-α-Amino-3-indolepropionic acid Formula: C11H12N2O2 Molecular weight: 204.23 Method of production: Produced by microbial fermentation. Packing: 10kg/Kraft bag (feed); 25kg/Kraft bag (Premix); 25kg/drum (Pharma). Standard: EP6, FCCV, USP31, AJI97 Self-life: 2 years