USD $1.00-1.00 / Kilogram
USD $8.20-8.80 / Kilogram
USD $6.00-9.00 / Gram
USD $15.00-50.00 / Kilogram
USD $6.00-9.00 / Gram
USD $6.00-9.00 / Gram
USD $8.20-8.80 / Kilogram
description
l-tryptophan is an amino acid, a protein building block that can be found in many plant and animal proteins. l-tryptophan is called an “essential” amino acid because the body can’t make it. it must be acquired from food.
l-tryptophan is used for insomnia, sleep apnea, depression, anxiety, facial pain, a severe form of premenstrual syndrome called premenstrual dysphoric disorder (pmdd), smoking cessation, grinding teeth during sleep (bruxism), attention deficit-hyperactivity disorder (adhd), tourette's syndrome, and to improve athletic performance.
factory supply feed grade l-tryptophan/ l tryptophan
free sample available
coa and msds certificate
food grade and feed grade
items |
specification |
appearance |
white to light yellow crystal or crystal powder |
specific optical rotation |
-29.0°~-33.0° |
loss on drying |
≤0.5% |
crude ash |
≤0.5% |
heavy metals(pb) |
≤20 mg/kg |
arsenic |
≤2mg/kg |
assay |
≥98% |