China L-tryptophan

Bulk amino acid powder L-Tryptophan
Description：
Tryptophan is one of eight essential amino acids - basically meaning that the body cannot produce tryptophan itself, it must be obtained through diet. Tryptophan is best known as a precursor of serotonin . Tryptophan can be found in foods like meat, fish and dairy products.

Feed grade L-Tryptophan Specification：
ItemSpecification
AppearanceLight yellow to white crystalline powder
Assay ≥98.5%
Loss on drying ≤0.5%
Residue on ignition ≤0.5%
Specific rotation-29.0º~ -32.8º
PH5.0~7.0
As ≤2mg/kg
Pb ≤5mg/kg
Cd ≤2mg/kg
Hg ≤0.1mg/kg

FAQ
Q: Are you manufacturer ?
A: We are manufacturer for amino acids.
Q: Do you provide FREE samples ?
A: Yes, we could offer the sample for free but freight cost should be bear by yourself.
Q: What is your terms of payment ?
A: TT or LC.
Q: What’s your delivery time?
A: Usually 14 days after receipt of the deposit but also depends on your quantity.China L-tryptophan
website:http://www.blrhbio.com/tryptophan/l-tryptophan/