Catalogue / Pancragen
Pancragen
Also written as Pancragen tetrapeptide.
A short bioregulator peptide from the Khavinson series, containing an aromatic residue which sets it apart from most of the group.
| Class | Short bioregulator peptides |
| Determination | Peptide analysis, catalogue compound |
| Price | 341 USD |
Pancragen is identified against a certified reference standard rather than against a published mass, because commercially supplied material varies in composition between suppliers. Purity is reported separately by reversed-phase chromatography at 214 nm and describes the chromatographable fraction only.
| An aromatic residue gives absorbance at 280 nm as well as at 214 nm, so a two-wavelength trace distinguishes aromatic impurities from the rest. Most of this series has no such handle. |
| That same residue is an oxidation site, adding 16 daltons and appearing as a shoulder ahead of the main peak in aged material. |
| No mass figure is published on this page. The composition supplied under this trivial name is not documented in a public chemical database, so identity is established against a certified reference standard at the time of analysis. |
Every compound fails in its own way. A generic peptide method applied without regard to these specifics produces a number that looks like a result and is not one.
Di, tri and tetrapeptides. Low molecular weight makes them the hardest class to quantify honestly: at this size the counter-ion and residual water can outweigh the peptide itself.
LC-MS identity, purity by RP-HPLC with a polar-retentive column since these peptides are barely retained on standard C18, and net peptide content because a purity figure alone is close to meaningless here.
Where the delivered milligram figure matters rather than the percentage, net peptide content by combustion analysis and water by Karl Fischer are added, and the certificate carries a closed mass balance instead of a single purity number.
| LC-MS identity | Measured mass |
| RP-HPLC purity | Area at 214 nm |
| Net peptide content | Milligrams |
| Water content | Karl Fischer |
| Counter-ion | Ion chromatography |
| Bacterial endotoxins | USP <85> |
What is the molecular weight of Pancragen?
No molecular weight is published for Pancragen on this page, because the composition of commercially supplied material varies between suppliers and an unverified figure on an analytical site is worse than an absent one. Identity is established against a certified reference standard at the time of analysis.
How is Pancragen tested for purity and identity?
LC-MS identity, purity by RP-HPLC with a polar-retentive column since these peptides are barely retained on standard C18, and net peptide content because a purity figure alone is close to meaningless here. Purity describes the chromatographable fraction only and is not the same quantity as the peptide mass delivered per vial.
What goes wrong when Pancragen is analysed?
An aromatic residue gives absorbance at 280 nm as well as at 214 nm, so a two-wavelength trace distinguishes aromatic impurities from the rest. Most of this series has no such handle.
What does Pancragen analysis cost at ANALYTON?
Peptide analysis, catalogue compound is priced at 341 US dollars, covering the determinations described on this page. Content, safety and elemental determinations are ordered alongside and are priced separately on the price list.
Updated 2026-09-01. Masses computed at build, not transcribed.