DSIP has a phosphorylated cousin that weighs 80 daltons more and is sold under the same four letters. Weighing the molecule is the only way to know which one is in the vial.
$249CAD
Results in about five business days from arrival
Order this testA nine-residue peptide, Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu, unusually acidic for its size. Isolated from rabbit brain in the 1970s and never developed into an approved product anywhere.
Phosphorylated DSIP carries a phosphate group on the serine, adding almost exactly 80 daltons. It is a distinct molecule, it is sold under the same name, and the two are frequently conflated in the literature as well as in the market.
Eighty daltons in 849 is nearly ten percent. That is a wide gap by analytical standards and completely invisible to anyone reading a label.
Three of the nine residues are acidic. That changes how the peptide is purified, which counterion it ends up paired with, and how much of the final powder is peptide rather than salt. Why that is a separate measurement from purity.
No approved product, no pharmacopoeial monograph. Every claim about a DSIP vial originates with whoever sold it.
One unopened vial. Detailed posting instructions arrive with your order confirmation, immediately after you pay.
No. Lyophilised peptides travel safely at room temperature, which is how nearly all samples reach us.
An independent Ontario laboratory. Every certificate we issue names the facility that ran it — we are a testing service, not a laboratory, and we would rather say so than let you find out from the report.
You get the result. We do not soften findings, and we do not charge differently depending on what the analysis shows.
Yes. Every certificate carries an identifier that anyone can check against our records, including the vendor you bought from.
Test your dsip
$249 CAD · about five business days from arrival · never leaves Canada