Pancragen

Pancragen is a synthetic tetrapeptide, H-Lys-Glu-Asp-Trp-OH (single-letter KEDW), of L-lysine, L-glutamic acid, L-aspartic acid and L-tryptophan, supplied as the free acid, from the St. Petersburg (Khavinson) line of short peptide bioregulators. It is listed here strictly as an analytical reference entity — it is not sold, stocked, or certified by Lineará, and has no price or certificate of analysis. The data on this page is characterization only: molecular formula C26H36N6O9 and the values computed from it. No biological activity, mechanism, or use is described or implied.

Pancragen has the sequence Lys-Glu-Asp-Trp. The free tetrapeptide H-Lys-Glu-Asp-Trp-OH (single-letter KEDW), of L-lysine, L-glutamic acid, L-aspartic acid and L-tryptophan with free termini, molecular formula C26H36N6O9. The chemist confirms the supplied form is the free acid. Chemical registries index the C-terminal AMIDE instead: PubChem CID 68451868 is H-Lys-Glu-Asp-Trp-NH2, a different molecule (C26H37N7O8, InChIKey WKJHPWJUFPYRSF-LEAZDLGRSA-N), so that CID is not shipped as this entity's identifier and no CID is asserted for the free acid here (a free-acid record surfaced by live PUG-REST at build is noted in the identifiers report). The sequence-derived structure carries no unassigned stereocentres. A computed 3D conformer is held pending the chemist sign-off.

Pancragen has the molecular formula C26H36N6O9, giving an average molecular weight of 576.61 g/mol and a computed monoisotopic mass of 576.2544 Da.

Yes. Pancragen is a peptide — a chain of amino-acid residues joined by peptide bonds, 4 residues in length. Its identity is defined by that sequence and its molecular mass.

As a research material, Pancragen is typically handled as a lyophilized (freeze-dried) powder. It is kept desiccated and cold — commonly 2–8 °C for short periods and −20 °C for longer storage — and reconstituted in sterile or bacteriostatic water. This is storage and handling information only, not a use protocol.

No. Pancragen is listed here only as an analytical reference entity. It is not part of the Lineará formulary, has no price or certificate of analysis, and is not offered for sale.

No. Pancragen is presented strictly as characterization reference data. It is not a drug, is not approved for any human or veterinary use, and must not be administered to humans or animals.