DSIP Vial

Description

The DSIP 5mg vial is supplied as a synthetic nonapeptide catalogued as DSIP, freeze dried and sealed. Fill weights of 5 mg and 10 mg are offered here, chosen before you order. The cake is white to off-white. Every figure quoted on this page comes from the certificate issued against the lot number on the vial. For laboratory research use, and not for human or veterinary consumption.

The label on the DSIP 5mg vial carries the compound, the fill weight and the lot number, and that is the extent of it.

What the DSIP 5mg vial is

Everything that can honestly be said about the DSIP 5mg vial before the certificate is opened is listed below.

The format, the fill weight and the milligram arithmetic

Peptides are shipped dry for a simple reason: in solution they degrade, and nobody can control the temperature of a parcel in transit. Freeze drying removes the solvent under vacuum and leaves a solid with a low residual water figure, which the certificate states. The cake that results is physically fragile and can break loose and rattle. A broken cake is cosmetic. The number that matters is the fill weight. Nothing about the DSIP 5mg vial is sold by volume.

The arithmetic

Milligram content is the unit the DSIP 5mg vial is sold in, because it is the only figure that makes two listings comparable. This listing has more than one strength, so the arithmetic has to be done per option: take the price of the option and divide it by its milligram content. The result is printed under each price. It is the number that makes two vial sizes, and two vendors, comparable at all. Compare the DSIP 5mg vial on that basis rather than on the price of the glass. The case is made at greater length in why price per milligram beats the price on the bottle.

What the certificate of analysis reports

The certificate covers identity, purity, moisture and provenance, in that order of importance. Identity is the mass spectrometry comparison. Purity is the chromatographic percentage with the trace attached. Moisture is the titration result. Provenance is the lot number, the analysis date and the name of the laboratory that signed the document. The useful habit is to check that the lot number on the paper matches the lot number on the glass before reading anything else. The certificate issued with the DSIP 5mg vial is specific to the lot and not to the product line.

Assays are run by an outside contract laboratory rather than in house. Independence of that kind matters, and it has a limit: the figure still depends on the sample that was submitted, which is why lot by lot testing rather than periodic testing is the part that matters. Stock is withdrawn from sale where the certificate for the DSIP 5mg vial does not support the figures here. See how to read a certificate of analysis and why we publish the batch that failed.

What the methods actually measure

HPLC provides the purity percentage. The method resolves a mixture into its parts on a column and the detector reports them as peaks whose areas are integrated. Purity is the main peak over the sum of all peaks. Because it is a ratio, two lots can share a purity figure and still differ in fill weight, which is why both numbers are published and neither substitutes for the other. The same methods are run on the DSIP 5mg vial as on every other lot on this shelf, and formulae and expected masses for compounds of this class can be checked through PubMed.

Names, abbreviations and how to keep the DSIP 5mg vial

Naming is inconsistent across the whole category. Research groups issue internal codes, cosmetic registers assign INCI numbers and renumber them, regulators grant nonproprietary names, and vendors invent their own. DSIP is kept as four letters throughout. The expanded form of the abbreviation names an effect, and this page does not name effects, so the short form is used in the title, the address of the page, the image description and the body. The catalogue name carried by the DSIP 5mg vial is the one the trade uses, and a trade name is not an identifier.

The format exists to be stored. Refrigerated for short periods and frozen at minus 20 degrees Celsius or lower for longer ones, sealed throughout, with repeated warming and cooling the habit to avoid. Keep the certificate with the DSIP 5mg vial, since the lot number is the only thing joining the two.

What this listing refuses to say

Sold to qualified purchasers for laboratory research only. Not for human or veterinary use. The page carries no dosing information, no protocol, no administration instructions and no account of physiological activity, because publishing any of those would be describing a use this material is not sold for. We will not supply them privately either. No part of this page describes a use for this material in a person or an animal. Bacteriostatic water, sterile diluents and syringes are stocked separately rather than sold as a set with the vial.

A research use only statement is not a legal strategy and is not treated as one here. Warning letters in this area turned on what the rest of the page said, not on whether a disclaimer was present. See research use only is not a legal strategy.

Lots that failed their own stated figures are kept rather than deleted, which is the point of an archive as against a highlight reel. This item sits on the nootropic shelf, inside the research peptide catalogue, and every certificate we hold is on the lab results page.