
Thymosin Alpha-1 5mg
COA 99.79%Immune · 10 mg
Buy 2, Get 2 Free
1 compound · priced per vial · lot COAs in our public library

Immune · 10 mg
Buy 2, Get 2 Free
Immune & Inflammation groups synthetic peptides whose published literature sits in immunology: thymic peptides such as Thymosin Alpha-1, a 28-residue N-acetylated sequence first characterised in thymic extracts. Related melanocortin-derived and cathelicidin-derived sequences that appear in innate-immunity and TLR-signalling studies are listed in other categories. Every listing is lyophilised synthetic material supplied for laboratory research use only. The category is a taxonomy of what the literature studies, not a description of what a compound does in a person.
A research peptide is identified by its sequence, its molecular formula and its molecular weight. Thymosin Alpha-1, for example, is C129H215N33O55 at 3108.30 g/mol, and its N-terminal acetyl group is part of the identity that a mass-spectrometry result has to reproduce. Purity is reported as the main-peak area of an HPLC trace against a stated specification. Each product page lists the CAS number, formula and weight next to the sizes offered, so a figure on a certificate can be checked against the catalog value rather than taken on trust.
An independent US laboratory tests the lots it receives. The laboratory reports HPLC purity and mass-spectrometry identity for the sample it received, names the product and the batch, and the resulting Certificate of Analysis is published in the COA library and linked from the product page for the lots it covers. One report describes one sample: match the product name, vial size and batch printed on the report to the vial in front of you, and regard a report that names a different size or batch as a different document. Where no certificate is published for a product, the page says so instead of borrowing another lot's report.
Lyophilised peptides ship at ambient temperature in protective packaging; the freeze-dried cake is stable in transit, and the vial should stay sealed and dry until it is needed at the bench. For long-term laboratory storage, follow the storage note on the lot's certificate, keep the vial out of light and away from repeated temperature cycling, and record the lot number in the lab notebook with the date the vial was opened. A reconstituted solution is a different material from the dry powder: its stability depends on the solvent and the storage temperature, and it should be labelled with the date of preparation.
Read the laboratory's name first, then the sample name and batch, then the tests actually performed. An HPLC purity figure is the percentage of the main peak, not a statement about biological activity; the mass-spectrometry result should agree with the catalog's molecular weight within the instrument's tolerance. A certificate that is missing one of these fields, or whose sample name does not match the vial, is a question for us before the vial goes into an experiment. The library entry carries the laboratory's own verification link where the lab provides one.