Immune Peptides

What are immune peptides?

Many of these trace back to thymus research in the 1960s and 1970s. Thymosin Alpha 1 was isolated in 1977 from a calf thymus extract and later became the drug thymalfasin in some countries. Thymulin is a nine-residue thymic hormone that needs zinc to fold. VIP is a 28-residue neuropeptide with immune effects. Thymogen, Crystagen and Vilon are two- and three-residue peptides from the Khavinson bioregulator series.

All immune peptides on this page are for laboratory research only.

Immune peptides in stock

Thymic peptides, neuropeptides and bioregulators:

• KPV: a lysine-proline-valine tripeptide (CAS 67727-97-3) from the tail of alpha-MSH, supplied as freeze-dried powder
• Thymosin Alpha 1: a 28-amino-acid acetylated thymic peptide, also called thymalfasin (CAS 62304-98-7), supplied as freeze-dried powder
• Thymulin: a zinc-binding nine-amino-acid thymic peptide supplied as freeze-dried powder
• Thymalin: the synthetic thymic nonapeptide thymulin (CAS 63958-90-7) supplied as freeze-dried powder
• VIP Peptide: vasoactive intestinal peptide, a 28-amino-acid neuropeptide (CAS 40077-57-4) supplied as freeze-dried powder
• Crystagen: a synthetic Glu-Asp-Pro bioregulator tripeptide supplied as freeze-dried powder
• Thymogen: a synthetic Glu-Trp dipeptide, also called oglufanide, supplied as freeze-dried powder
• Vilon: a synthetic Lys-Glu bioregulator dipeptide supplied as freeze-dried powder

Thymulin or Thymalin?

They’re the same compound. The name Thymalin first belonged to a Russian thymus extract, but what we sell under both names is the synthetic nonapeptide. Pick whichever name matches your protocol. Thymosin Alpha 1 is a different peptide entirely. You can look it up on PubChem.

Storing and handling immune peptides

Keep sealed vials in the fridge at 36 to 46 °F (2 to 8 °C) and away from light until you need them. When you reconstitute, let the vial reach room temperature, add the solvent slowly down the inside wall and swirl gently until it’s clear. Don’t shake it. Label each vial with the date you mixed it, and keep mixed vials cold. Each product page lists any compound that needs special handling, such as freezing or DMSO.

Why buy immune peptides from Oath Peptides

We ship from Gilbert, Arizona with 2-day shipping. Every batch is tested by a US lab, with purity at 99% or higher, and every vial arrives sealed and labeled with the compound and the amount. Most items come as a single vial or in 3, 6 and 12 packs that save up to 20 percent.

Immune peptides FAQ

Is Thymosin Alpha 1 the same as thymulin?

No. Thymosin Alpha 1 is 28 residues long. Thymulin is nine residues and needs zinc to fold.

Are these immune peptides approved drugs?

Not as sold here. They’re research-grade and for lab use only.

Order immune peptides today

Pick a product above, choose your vial size and check out in a couple of minutes. Need something to dissolve it in? Add Research Water to the same order and it ships in the same box.

All products are for laboratory research use only. Not for human or veterinary use.