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The three fastest movers, at trade price
The three lines most resellers start with, at the per-box price everyone pays. Per sealed box of 10 vials in CAD, DAP, delivered in Canada. Everything else on the list is priced off the same rule; volume above the list is quoted.
- Certificate of analysis on every batch. Purity 98.0% minimum by RP-HPLC.
- Dispatch 1 to 2 business days from cleared payment for lines on the shelf, 4 weeks made to order, special orders dated by the desk.
- Minimum order $300.00 CAD, one sealed box per line. First order from $100.00 CAD.
- Settlement by Interac e-Transfer, credit card (plus GST/HST), Wise, Bitcoin, or USDT on Tron or Ethereum, against a proforma invoice.
Supplied for laboratory research use only, sold to businesses only. How a batch is made and released · How trade supply works · US buyer? Switch to USD
Quick order pad
For buyers who already know their codes. Enter a code and a box quantity per line, or paste straight out of a spreadsheet. Figures in CAD.
Checkout
Four steps. You pay at the last step, by Interac e-Transfer, credit card (plus GST/HST), Wise, Bitcoin, or USDT on Tron or Ethereum; nothing is charged automatically. Figures in CAD.
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Selank wholesale
| Name | Selank |
|---|---|
| Product codes | SK5, SK10 |
| Description | Heptapeptide, tuftsin analogue |
| CAS number | 129954-34-3 |
| Molecular formula | C33H57N11O9 |
| Molecular weight | 751.89 g/mol |
| Sequence | TKPRPGP 7 residues. Formula and weight above are calculated from this sequence. |
| Presentations | 5mg to 10mg a vial, 10 vials per box |
Every batch of every size is tested against these limits before it is released to stock. A batch that fails any line is quarantined and does not ship.
| Appearance | White to off-white lyophilised powder or cake, free from foreign matter |
|---|---|
| Identity | Retention time by RP-HPLC against the reference standard, confirmed by ESI-MS |
| Purity | Not less than 98.0 percent by RP-HPLC, area normalisation at 220 nm |
| Related substances | Any single related substance not more than 1.0 percent |
| Water content | Not more than 8.0 percent by Karl Fischer |
| Acetate content | Not more than 15.0 percent by ion chromatography, where supplied as the acetate |
| Residual solvents | Acetonitrile not more than 410 ppm, TFA not more than 1.0 percent by GC and ion chromatography |
| Bacterial endotoxin | Reported on the certificate by LAL where the line is tested |
| Net content | Labelled peptide content per vial, plus or minus 5 percent by weight |
| Container and closure | 2 mL clear moulded glass vial, bromobutyl stopper, aluminium flip-off seal |
| Storage | Minus 20 degrees Celsius, protected from light and moisture. Short transit at ambient is tolerated. |
| Shelf life | 24 months from manufacture at minus 20 degrees Celsius, retest date on every certificate |
| Reconstitution | Reconstitute with bacteriostatic or sterile water. Do not shake. Once reconstituted, hold at 2 to 8 degrees Celsius. |
Prices and shelf states for the 2 sizes of Selank as of , the last day any of them changed.
The Selank ladder in figures
Selank is listed in 2 sizes, 5mg to 10mg a vial, every one a sealed box of 10 vials priced in CAD: $57.53 for SK5 (5mg x 10vials) up to $97.36 for SK10 (10mg x 10vials), which is $5.75 to $9.74 a vial.
Per mg the cheapest size is SK10 (10mg x 10vials) at $0.974 /mg and the dearest is SK5 (5mg x 10vials) at $1.15 /mg, 15 percent apart. The per-mg figure falls at every step up in vial size, so the largest vial, SK10, is also the best priced.
No size of Selank is on the shelf in Canada or the United States today: SK10 is on order and ships in 2 weeks and SK5 is on the way in and ships in 1 week.
What every batch of Selank is released against
The 2 sizes share one specification; the size changes the fill, never the limits: purity: not less than 98.0 percent by RP-HPLC, area normalisation at 220 nm; identity: retention time by RP-HPLC against the reference standard, confirmed by ESI-MS; related substances: any single related substance not more than 1.0 percent; water: not more than 8.0 percent by Karl Fischer; content: labelled peptide content per vial, plus or minus 5 percent by weight. Every batch is tested against the whole list before release and its certificate carries each result beside its limit; the batch number on the certificate is the one on the vial label.
Look up a batch number to pull its certificate.
Selank: what buyers ask
Which size of Selank costs least per mg?
SK10, 10mg x 10vials, at $0.974 /mg; a box of it is $97.36, $9.74 a vial. It is also the largest vial listed.
What does the cheapest box of Selank cost, and the dearest?
$57.53 for SK5 (5mg x 10vials), $5.75 a vial, and $97.36 for SK10 (10mg x 10vials), $9.74 a vial, in CAD per sealed box of 10. Freight included on orders of $1,000.00 and over, quoted at checkout below that.
Which sizes of Selank are on the shelf today?
None today: SK10 is on order and ships in 2 weeks and SK5 is on the way in and ships in 1 week.
Do all 2 sizes of Selank meet the same specification?
Yes. Each size is released against the one list on this page (purity, identity, related substances, water, content); the box size changes the fill per vial and nothing else. Each box carries its own batch number and the certificate for that batch is on file.
Can sizes of Selank be mixed in one order?
Yes. One sealed box is the smallest quantity per size, the order as a whole must reach $300.00 CAD ($100.00 on a first order), and boxes of any size, or of any other compound, count toward it. A single order takes a volume discount on its goods: 5 percent from $5,000.00, 10 percent from $10,000.00, 15 percent from $20,000.00 and 20 percent from $50,000.00. Lifetime paid spend also moves the account up: Silver from $5,000.00 takes 3 percent off goods, Gold from $15,000.00 takes 6 percent off goods, Platinum from $50,000.00 takes 10 percent off goods, Diamond from $100,000.00 takes 15 percent off goods. Checkout takes the better of the two, never both.
What is Selank, and what sizes is it supplied in?
Selank (CAS 129954-34-3) is a 7-residue peptide, sequence TKPRPGP; molecular formula C33H57N11O9, average mass about 751.89 g/mol. Supplied for research use in 2 sizes, 5mg to 10mg, 10 vials a sealed box, from $57.53 a box ($0.974 /mg at the best size).
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