L-tryptophan is an essential amino acid because the body can't make it. It must be acquired from food, such as animal and plant proteins. L-Tryptophan is also a precursor to the neurotransmitter serotonin and the hormone melatonin. People use L-tryptophan for some mental health disorders, to help quit smoking, for athletic performance, and for emotional symptoms in people with premenstrual dysphoric disorder, relax anxiety and depression.

Product: L-Tryptophan

CAS NO.: 73-22-3

Molecular Formula:  C₁₁H₁₂N₂O₂

Molecular Weight: 204.23

 AJI92 Quality Standard 

USP30 Quality Standard 

EP10