Tyrosine (L - tyrosine, Tyr), it is an essential amino acids, which is a kind of important nutrition for human and animal metabolism, growth and development plays an important role, could be widely used in food, feed, and chemical industry, etc. L-Tyrosine is a precursor to neurotransmitters and increasesplasma neurotransmitter levels (particularly dopamine and norepinephrine)but has little if any effect on mood.The effect on mood is more noticeable in humans subjected to stressful conditions. L-tyrosine can be used in agricultural research, beverage additives and feed, etc. L-Tyrosine helps to calm the body, increase energy, protect the skin from harmful UV rays, and improve mood, concentration, learning and memory. Product Name  L-Tyrosine  CAS No. 60-18-4 Appearance White powder MF C9H11NO3 Purity 99% min tyrosine Keywords tyrosine,l-tyrosine,l-tyrosine powder Storage Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Shelf Life 24 Months 1. L-tyrosine is used in Food Field; 2. L-tyrosine is used for Feed Addition; 3. L-tyrosine is used in Chemical Industry and Other Industries. 1.L Tyrosine is an important biological reagent. 2.L Tyrosine can be used in biochemical study, life sciences, agricultural research, beverage additive and feed stuff, etc. 3.L Tyrosine protects the skin from harmful UV light rays. 4.L Tyrosine boosts one’s mood, concentration,learning,and memory.