MOTS-c Vial

Description

The MOTS-c 10mg vial is supplied as a reagent: a sixteen residue mitochondrial derived peptide, lyophilized, sealed and assayed by lot. Fill weights of 10 mg and 20 mg are offered here, chosen before you order. 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 label on the MOTS-c 10mg vial carries the compound, the fill weight and the lot number, and that is the extent of it.

Contents of the MOTS-c 10mg vial

The table below is the standing description of the MOTS-c 10mg vial. Measured values live on the lot certificate.

Lyophilized powder, and the price per milligram of the MOTS-c 10mg vial

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 MOTS-c 10mg vial is sold by volume.

The arithmetic

Milligram content is the unit the MOTS-c 10mg vial is sold in, because it is the only figure that makes two listings comparable. With several fill weights on one page, there is no single per milligram figure to quote. There is a method. Divide each option price by the milligrams in that option, then compare the quotients rather than the prices, and read the assay percentage from the certificate alongside them. Compare the MOTS-c 10mg 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 MOTS-c 10mg vial is specific to the lot and not to the product line.

The assay is performed by a contract laboratory unconnected to this business. Any lot that comes back below its stated milligram content is pulled from sale, and the certificate stays published on the results page with everything else instead of quietly disappearing. Stock is withdrawn from sale where the certificate for the MOTS-c 10mg vial does not support the figures here. See how to read a certificate of analysis and check the lab before you check the numbers.

Behind the figures

Trifluoroacetic acid is used in peptide purification and some of it leaves with the product as a counter ion. It is heavier than nothing, which means a lot reported by gross weight contains less sequence than the label implies. Net peptide content corrects for that, and so do the figures used here. The same methods are run on the MOTS-c 10mg vial as on every other lot on this shelf, and formulae and expected masses for compounds of this class can be checked through PubChem at the NCBI.

Catalogue names and storage

Abbreviations here are inherited rather than designed. They come from the groups that first made a compound, from ingredient registers, from development programmes and from vendors, so two listings can look different and be identical. Where an abbreviation expands into a statement about what a compound does, the abbreviation is what appears here, in the title, the web address, the image description and the text alike. The catalogue name carried by the MOTS-c 10mg 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

Research use only, not for human or veterinary consumption. That sentence is a description of what is being sold and not a disclaimer appended to something else. There is accordingly no dose, no cycle, no route of administration and no reconstitution guidance anywhere on this page, and the omission is the policy rather than a gap in the copy. 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.

Every figure quoted here comes from the document linked above, and older certificates are kept rather than retired. That is the whole of the claim being made. This item sits on the longevity shelf, inside the research peptide catalogue, and every certificate we hold is on the lab results page.