wholesale L-tryptophan

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    Bulk amino acid powder L-Tryptophan
    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:
    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
    As ≤2mg/kg
    Pb ≤5mg/kg
    Cd ≤2mg/kg
    Hg ≤0.1mg/kg

    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.wholesale L-tryptophan

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