Amino acids l-serine is one of the naturally occurring proteinogenic amino acids. Its codons are UCU, UCC, UCA, UCG, AGU and AGC. Only the L-stereoisomer appears naturally in proteins. L-serine is not essential to the human diet, since it is synthesized in the body from other metabolites, including glycine. Serine was first obtained from silk protein, a particularly rich source, in 1865. Its name is derived from the Latin for silk, sericum. Serine's structure was established in 1902. By virtue of the hydroxyl group, serine is classified as a polar mino acid.
| Item | Standard |
| Appearance | White Crystal Power |
| Transmittance | >98.0% |
| Chloride (Cl) | ≤0.020% |
| Sulfate (SO4) | ≤0.020% |
| Iron(Fe) | ≤0.001% |
| Heavy Metals (Pb) | ≤0.001% |
| Other Amino Acids | Chromatographically not detectable |
| Loss on Drying | ≤0.20% |
| Residue in Ignition | ≤0.10% |
| Assay | 98.5-101.0% |
- Payment term: T/T 30% in advance and T/T 70% against copy of B/L. or 100% L/C at sight.
- Shipment time: Within 3 weeks after confirming order.
- We take photos of every stage of the process and can send them to you. Before we ship the container, you will have photos and lab test results.
Provide quality after-sale service once the container is received.
In case the product is damaged, we will refund you or resend a new packaging.
Also, if the goods are not as per your specification, we will callback the container at our cost, or compensate you as per our agreement.
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