Information for institutional quotation
PE-22-28: price, documentation and dispatch in Colombia
PE-22-28 is listed in Peptidos Colombia's catalog as a research and laboratory-work reference. Technically, it is a heptapeptide derived from the sortilin propeptide, a classification that places it in the experimental neuromodulation category alongside eight other references of very different structures and origins. The available presentations are 5 mg and 10 mg, in lyophilized powder. Lot identity and purity are confirmed by the certificate of analysis issued by Janoshik Analytical, per lot, with HPLC for purity and mass spectrometry for identity, upon institutional request and subject to documentary availability. This listing organizes that documentary chain without proposing any use outside the research framework, and places PE-22-28 within the neuromodulation category based on data the catalog itself can verify: price, presentation, and declared precursor.
Presentations and visible prices
| Presentation | Code | Reference price |
|---|---|---|
| 5mg | * | US$94 |
| 10mg | * | US$170 |
The price above is the public value per vial. Availability and batch documentation are confirmed before the quotation is accepted.
PE-22-28: a heptapeptide derived from the sortilin propeptide
Sortilin is the protein whose propeptide PE-22-28 is declared to derive from, as a heptapeptide fragment, according to the catalog's structural classification. This lineage distinguishes PE-22-28 from other references in the same neuromodulation category, which come from entirely different precursors: corticotropin, tuftsin, or the hypocretins, among others.
The name PE-22-28 combines letters and numbers as a technical identification code, not as a commercial brand. It should be recorded the same way in the request, the quote, and the receipt so all three match without ambiguity against other references in the same category.
PE-22-28 within a category of nine references
The experimental neuromodulation category gathers nine references of very different precursors and structures. PE-22-28 shares that category with Cerebrolysin and Dermorphin, among others.
Each reference's catalog price follows its own commercial listing, not a flat category-wide rate. Comparing PE-22-28's current price with that of its category neighbors is something the institutional buyer can do directly in the catalog, listing by listing, without needing to add shipping rates or convert different presentations to a common unit.
PE-22-28's two presentations: what to declare in the quote
PE-22-28's 5 mg and 10 mg presentations are declared by mass, corresponding to a lyophilized powder in a vial. The 10 mg presentation's price is roughly double that of the 5 mg one, a relationship the institutional buyer can verify directly in the listing's commercial block.
The institution quoting PE-22-28 checks each presentation's price in this page's commercial block, rather than assuming it matches another reference in the same category or an earlier inquiry. The presentation code — 5 mg or 10 mg — should be repeated in the request, the quote, and the receiving record, so inventory logging does not depend on remembering which of the two was ordered.
Identity and purity per the lot's certificate
PE-22-28's certificate of analysis is issued by Janoshik Analytical, per lot, with HPLC for purity and mass spectrometry for identity. The listing does not publish a generic purity figure, because that data depends on the specific lot shipped and is requested subject to documentary availability.
CAS number, molecular formula, molecular weight, and complete sequence remain visibly pending until specific documentary support exists for this reference. Upon receiving the COA, it is worth confirming that the identified lot matches the vial received and that the declared presentation, 5 mg or 10 mg as requested, matches the accepted quote.
Cold chain and shipping rates within Colombia
PE-22-28's storage follows the documentation applicable to the lot, currently stated as 2–8 °C, protected from light, the same criterion the catalog applies to its other powder neuromodulation references.
Shipping rates to Bogotá and to other destinations within the country are on the site's shipping information page, with delivery time confirmed at the time of the quote according to the agreed destination. Outside Colombia, this reference ships to 5 countries (Costa Rica, Ecuador, United States, Mexico and Puerto Rico), from US$57; the rate for each country is listed on the site's international shipping page.
How the PE-22-28 purchase is documented
An order for PE-22-28 is logged, confirmed in writing in an institutional quote with presentation, price, and destination, and only afterward is payment coordinated using the method defined there.
The purchase file brings together the request, the quote, proof of payment, shipping confirmation, receipt, and the lot's COA when requested — the same documentary discipline applied across the rest of Peptidos Colombia's technical catalog.
Frequently asked questions about PE-22-28
What is PE-22-28?
A heptapeptide derived from the sortilin propeptide. It is offered exclusively for research and laboratory work, not intended for human use.
Does PE-22-28 share a presentation with another neuromodulation reference?
Its two presentations, 5 mg and 10 mg, each have their own price, shown in this page's commercial block. Every reference in the neuromodulation category keeps its own price, with no fixed relation to the others.
What is the difference between the 5 mg and 10 mg presentations?
It is the amount of material declared per vial. The 10 mg presentation's price is higher and is shown in the listing's commercial block.
Who certifies the lot's identity and purity?
Janoshik Analytical, per lot, with HPLC for purity and mass spectrometry for identity, upon institutional request and subject to documentary availability.
How is this reference stored?
According to the documentation applicable to the lot, currently in a range of 2–8 °C, protected from light.
Does PE-22-28 share a precursor with another catalog reference?
Not within the neuromodulation category: each reference in that group derives from a different precursor. PE-22-28 is the only one the catalog declares as derived from the sortilin propeptide.