Tryptophan is an important precursor of auxin biosynthesis in plants. Its structure is similar to that of IAA, and it is ubiquitous in higher plants. It is also a precursor of 5-hydroxytryptamine, an important neurotransmitter in the human body. It can be used as a nutritional supplement for pregnant women and a special milk powder for young children, as well as for niacin deficiency (Pellagra). As a sedative, it can regulate mental rhythm and improve sleep, It is also one of the raw materials for compound amino acid infusion. | ||
Acid dissociation constant (pKa): | 2.46(at 25ºC) | |
melting point: | 289-290 °C (dec.)(lit.) | |
solubility: | 20% NH3: 0.1 g/mL at 20 °C, clear, colorless | |
ph value: | 5.5-7.0 (10g/l, H2O, 20ºC) | |
Einecs Number: | 200-795-6 | |
CAS number: | 73-22-3 |