N-Acetyl Semax Amidate 25mg Vial

Description

The N-acetyl Semax amidate 25mg vial is supplied as a reagent: the acetylated and amidated form of Semax, a heptapeptide derived from the ACTH 4-10 sequence, lyophilized, sealed and assayed by lot. The fill weight is 25 mg of net peptide content. The powder is white to off-white. Nothing here is addressed to a person, because the material is not for human or veterinary consumption.

The same material is catalogued elsewhere as NA Semax amidate. The label on the N-acetyl Semax amidate 25mg vial carries the compound, the fill weight and the lot number, and that is the extent of it.

The N-acetyl Semax amidate 25mg vial, specified

What follows is the specification for the N-acetyl Semax amidate 25mg vial, with the measured figures on the lot certificate.

The format, the fill weight and the milligram arithmetic

Freeze drying is how a peptide reaches you stable at ambient temperature. The solution is frozen solid, then the ice is pulled off under vacuum instead of being melted, so the water never passes through a liquid phase on the way out. What is left behind is a porous cake. In the vial it may sit as a flat disc, a loose dust, or a thin film part way up the glass. None of those appearances says anything about the contents. Fill weight and the assay figure do. Nothing about the N-acetyl Semax amidate 25mg vial is sold by volume.

How the per milligram figure is worked out

Milligram content is the unit the N-acetyl Semax amidate 25mg vial is sold in, because it is the only figure that makes two listings comparable. Price per milligram here comes out near $3.76. Work it out the same way every time, price over milligrams, and two listings become comparable even when one is a small vial and the other is not. Compare the N-acetyl Semax amidate 25mg 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.

The certificate of analysis for the N-acetyl Semax amidate 25mg vial

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 N-acetyl Semax amidate 25mg 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 N-acetyl Semax amidate 25mg vial does not support the figures here. See how to read a certificate of analysis and why we publish the batch that failed.

Behind the figures

A chromatogram cannot tell you what you have, only how homogeneous it is. That is what the mass spectrum is for. Ionise the sample, measure mass to charge, compare the result with the calculated mass for the intended sequence. When the observed and expected masses agree, identity is confirmed, and the spectrum is reproduced on the certificate so the comparison can be checked. The same methods are run on the N-acetyl Semax amidate 25mg vial as on every other lot on this shelf, and formulae and expected masses for compounds of this class can be checked through the NCBI chemistry and literature databases.

Names, abbreviations and how to keep the N-acetyl Semax amidate 25mg vial

Nomenclature in this field is a mess. Laboratory codes, INCI names assigned for cosmetic labelling, nonproprietary names and supplier catalogue names all circulate at once, and one molecule can appear in four catalogues under four names. Several abbreviations on this shelf unpack into descriptions of activity. They are not unpacked here, and where a compound cannot be described without that, only its measurable properties are described. The catalogue name carried by this 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 vial, since the lot number is the only thing joining the two.

Research use only: this vial is a reagent

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.