PE-22-28 wholesale
Bulk peptide powder in 10-vial kits, for sale in the USA and abroad: price and cost per mg
About PE-22-28
Synthetic spadin-derived heptapeptide, GVSWGLR. 2 vial strengths, 5mg to 10mg, from $60.25 to $108.04 per box of ten, in US dollars. Special order, with a 50-box minimum.
Documents Specification sheet Verify a batch How to read the certificate What the purity figure means The mass result, explained
PE-22-28 price per box, per vial and per mg
| Code | Strength | Per box | Per vial | Per mg | Stock | Order |
|---|---|---|---|---|---|---|
| PE5 | 5mg x 10 vials | $60.25 | $6.03 | $1.205 per mg | Special order, 50-box minimum | |
| PE10 | 10mg x 10 vials | $108.04 | $10.80 | Lowest, 50 boxes $1.080 per mg | Special order, 50-box minimum |
Ships from the USA: to US addresses at our risk until delivered (DAP), freight included from $1,000 of goods; to Canada and most other countries through the desk · on-shelf lines leave in 1 to 2 business days, then 1 to 3 business days in US transit · COA per batch · proforma in USD, paid by card, Wise, e-Transfer (Canada), Bitcoin or USDT · prices revised
Stock key
- In stock
- on the shelf, leaves in 1 to 2 business days once payment clears
- Low stock
- on the shelf and running low; leaves in 1 to 2 business days
- Ships in 1 week
- on its way in
- Ships in 2 weeks
- on order
- Made to order, 4 weeks
- made for the order, about four weeks
- Special order, 50-box minimum
- brought in on a 50-box minimum rather than held in stock; the desk confirms the date before you pay
Prices are in US dollars per sealed box. Per unit is the box price over the milligrams, millilitres or units in the box.
PE-22-28 in brief
PE-22-28 comes in 2 strengths from 5mg to 10mg per vial, each a sealed box of ten, from $60.25 to $108.04 a box. Per mg the spread is narrow: PE10 (10mg x 10 vials) works out at $1.080 per mg against $1.205 per mg for PE5 (5mg x 10 vials), 10 percent less for the same mg, because the vial, the fill and the testing cost about the same whatever the vial holds.
Nothing is held on the shelf: every strength is special order, brought in on a 50-box minimum rather than held in stock; ask the desk for the date before ordering.
What PE-22-28 is
PE-22-28 is a seven-residue synthetic peptide, a shortened analogue of spadin, which is itself a fragment of the sortilin propeptide. It is small, hydrophilic and made on resin, and its certificate is a straightforward peptide certificate: purity by reverse-phase HPLC, net content and identity by mass spectrometry.
Of its seven residues, Gly-Val-Ser-Trp-Gly-Leu-Arg, only the tryptophan, fourth in the chain, can oxidise, so its oxidation products join the deletion sequences a synthesis on resin leaves as its related substances; there is no methionine, asparagine or glutamine. It dissolves instantly. Its specification on this page gives the calculated mass, 773.9, that the identity result is matched to.
PE-22-28 beside Selank and Semax
PE-22-28 works out at $1.080 per mg at 10mg (PE10, in 50-box lots), its lowest. Its neighbours, on price alone: Selank at $0.740 per mg at 10mg (SK10), 751.9 g/mol; Semax at $0.740 per mg at 10mg (XA10), 813.9 g/mol.
Reading a PE-22-28 certificate of analysis (COA)
Identity by mass. Average mass 773.9 (C35H55N11O9). In electrospray the protonated ions come near m/z 774.9 (singly charged); on our certificates the measured mass is matched to the calculated average mass, within about one unit.
- Oxidation: 1 tryptophan, which oxidises to kynurenine and hydroxy forms under light. Kynurenine makes the chain 4 heavier and a hydroxy tryptophan 16.
- Deamidation: no asparagine or glutamine, so the +1 mass deamidation impurity common in longer peptides does not apply.
- Charge: near neutral pH about +1, basic.
Worked out from what the sheet holds for this line; the batch certificate is the record. How to read one, and verify a batch number.
Buy PE-22-28 in bulk
PE-22-28 is sold in bulk by the sealed box of ten vials, and every account starts at list price. Two discounts can lower it, the size of one order (from $5,000 of goods) or the account’s tier (from lifetime paid spend), and the better one applies, never both. Priced below on PE10, 10mg x 10 vials, the best-priced strength.
| Discount | Earned by | Off goods | PE10 per box | Per mg |
|---|---|---|---|---|
| List | Every account, any order | none | $108.04 | $1.080 |
| Order size | $5,000 of goods in one order | 5% | $102.64 | $1.026 |
| Order size | $10,000 of goods in one order | 10% | $97.24 | $0.972 |
| Order size | $20,000 of goods in one order | 15% | $91.83 | $0.918 |
| Order size | $50,000 of goods in one order | 20% | $86.43 | $0.864 |
| Silver tier | $5,000 lifetime paid spend | 3% | $104.80 | $1.048 |
| Gold tier | $15,000 lifetime paid spend | 6% | $101.56 | $1.016 |
| Platinum tier | $50,000 lifetime paid spend | 10% | $97.24 | $0.972 |
| Diamond tier | $100,000 lifetime paid spend | 15% | $91.83 | $0.918 |
Thresholds in USD on goods, before freight; the discount is worked out at checkout and shown on the proforma.
Specification
The limits this compound is supplied to.
| Purity | ≥ 98.0 % (RP-HPLC, 220 nm, area normalisation) |
|---|---|
| Identity | ESI-MS against a calculated average mass of 773.9 |
| Any single related substance | ≤ 1.0 % |
| Water | ≤ 8.0 % (Karl Fischer) |
| Acetate | ≤ 15.0 % (ion chromatography), as the acetate salt |
| Residual solvents | Acetonitrile ≤ 410 ppm; TFA ≤ 1.0 % |
| Net content | Label claim ± 5 % |
| Closure | 2 mL glass vial, bromobutyl stopper, aluminium flip-off seal |
| Storage | −20 °C, dark and dry; brief ambient transit tolerated |
| Shelf life | 24 months from manufacture; retest date on the batch record |
Order PE-22-28
50 boxes of PE5, 5mg x 10 vials, $60.25 a box. Every strength.
Questions about PE-22-28
How does PE-22-28 compare with Semax and Selank, the heptapeptides beside it?
All three are seven residues long and close in weight: Selank weighs 751.9, PE-22-28 773.9 and Semax 813.9, so PE-22-28 sits 22.0 above the first and 40.0 below the second. It shares no run of residues with either, ending in Leu-Arg where they both end in the Pro-Gly-Pro tail. Each has a different residue that can oxidise: a methionine in Semax, a tryptophan in PE-22-28, and none at all in Selank.
How much does PE-22-28 cost?
It is sold only by special order, 50 boxes per strength, from $60.25 a sealed box of 10 vials, up to $108.04 for the largest strength, which works out at $1.080 per mg at its best-priced size. The smallest order is 50 boxes of PE5, $3,012.50 of goods, with freight included to a US address. Every strength and its price per vial is in this page’s price table.
Which PE-22-28 size is cheapest per mg?
PE10, 10mg x 10 vials, at $1.080 per mg, which is 10 percent less per mg than PE5, at $1.205 per mg. Larger vials cost less per mg across this range, so match the vial to the size of the work first, then compare per mg.
Can I buy a single vial of PE-22-28?
No, and not a single box either. PE-22-28 is a special-order line, brought in on a 50-box minimum rather than held in stock, so the smallest order is 50 sealed boxes of one strength: for PE5, 5mg x 10 vials, that is 50 boxes at $60.25, $3,012.50 of goods. A box is sealed at fill with its batch number on it, and splitting one would break the link between the vials and their certificate.
Which PE-22-28 strengths are in stock today?
None today. PE5 and PE10 are special order: brought in on a 50-box minimum rather than held in stock; ask the desk for the date before ordering.
How is PE-22-28 stored?
At minus 20 degrees Celsius, dark and dry. Lyophilised powder tolerates a short spell at ambient temperature in transit, which is why boxes ship without ice. Storage and handling.
What is in a box of PE-22-28?
Ten sealed vials of one strength, each labelled with the product code, the strength and the batch number; the trade also calls a box a 10-vial kit. PE-22-28 is supplied as a powder in a sealed glass vial and in no other presentation. Boxes are not split.
Is a certificate of analysis (COA) provided for PE-22-28?
Yes. For PE-22-28 the batch certificate reports its purity, net content and identity by mass spectrometry. The other lines on this page are the specification it is made to, and the desk answers for them on a particular batch. The certificate is sent with the shipment, and again on request, and any batch number can be verified on the certificate page.
Is this for human use?
No. Everything here is supplied for laboratory research only, to trade accounts, and is not for human or animal consumption. The research-use page sets out who can buy and what is not sold.