Protirelin 25mg Vial

Description

The protirelin 25mg vial is a laboratory reference material and nothing else. The compound is a tripeptide amide catalogued as protirelin. The fill weight is 25 mg of net peptide content. Appearance is white to off-white, sealed under vacuum, with the lot number printed on the label. It is not a food, not a drug, and not for human or veterinary consumption.

The same material is catalogued elsewhere as TRH. The label on the protirelin 25mg vial carries the compound, the fill weight and the lot number, and that is the extent of it.

Contents of the protirelin 25mg vial

The table below is the standing description of the protirelin 25mg vial. Measured values live on the lot certificate.

Why it is a powder, and what a milligram of the protirelin 25mg vial costs

Lyophilization takes the water out without ever letting it be liquid. Freeze, pull a vacuum, and the ice leaves as vapour. Material is supplied in that state because water is the main thing that degrades a peptide, and because a dry solid survives a courier network that a solution would not. The cake takes up much more room than the peptide itself, which is why a small fill can look surprisingly bulky in the vial. Nothing about the protirelin 25mg vial is sold by volume.

Doing the division

Milligram content is the unit the protirelin 25mg vial is sold in, because it is the only figure that makes two listings comparable. At the price shown, that works out at roughly $4.56 per milligram. The sum is the whole price divided by the milligrams in the vial, and it is the only comparison between two listings that survives contact with different vial sizes. Prices move, so recompute it rather than quoting this sentence back at anybody. Compare the protirelin 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 documentation that comes with the protirelin 25mg vial

Read the certificate from the top and check the identifiers before the numbers. Lot number first, matched against the vial. Date of analysis next, because an old date on a new lot is a sign the document has been recycled. Then purity, then the mass spectrometry comparison, then water content, then the signature and the name of the laboratory. A sheet missing the lot number is not a certificate, it is a leaflet. The certificate issued with the protirelin 25mg vial is specific to the lot and not to the product line.

The laboratory that runs the assay has no ownership connection to this company. That arrangement is not a seal of approval and it does not make the figures infallible, but it does remove the obvious conflict of interest in a vendor grading its own stock. Stock is withdrawn from sale where the certificate for the protirelin 25mg 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

Identity is a separate question from purity, and it is answered by mass spectrometry. The molecule is ionised, its mass to charge ratio is measured, and the observed mass is compared against the mass calculated from the intended sequence. A match establishes that the main peak really is the compound named on the label. Without that step, a clean chromatogram only proves the vial holds one thing in quantity. The same methods are run on the protirelin 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 protirelin 25mg vial

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. TRH is kept as three letters. The expanded form of the abbreviation is the name of a hormone defined by what it does, so the short form is used in the title, the web address, the image description and the text. The catalogue name carried by this vial is the one the trade uses, and a trade name is not an identifier.

Handling notes are short. Sealed, dry, cold and dark, at 2 to 8 degrees Celsius for the short term and minus 20 degrees Celsius or below for anything longer. The stability window for the lot is printed on this listing. Keep the certificate with the vial, since the lot number is the only thing joining the two.

Research use only, stated plainly

The material is a reagent. It is not a medicine, not a supplement, not for human or veterinary consumption, and it is sold for in vitro and laboratory work by purchasers qualified to handle it. You will not find a dose, a schedule, an injection site or a mixing instruction here. Those belong to a use that is not offered. 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.

The limits of that sentence need stating. A research use only line describes what is sold, it is not a shield, and the enforcement record shows whole product pages being read rather than disclaimers alone. See research use only is not a legal strategy.

Read the certificate, check the lot number against the vial, and the listing has told you everything it can tell you. This item sits on the nootropic shelf, inside the research peptide catalogue, and every certificate we hold is on the lab results page.