HGH Fragment 176-191 Vial

Description

The HGH Fragment 176-191 vial is a laboratory reference material and nothing else. The compound is residues 176 to 191 of the hGH sequence, made synthetically. Fill weights of 5 mg and 10 mg are offered here, chosen before you order. The sequence runs to sixteen residues. 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 label on the HGH Fragment 176-191 vial carries the compound, the fill weight and the lot number, and that is the extent of it.

The HGH Fragment 176-191 vial, specified

What follows is the specification for the HGH Fragment 176-191 vial, with the measured figures on the lot certificate.

Why it is a powder, and what a milligram of the HGH Fragment 176-191 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 HGH Fragment 176-191 vial is sold by volume.

Doing the division

Milligram content is the unit the HGH Fragment 176-191 vial is sold in, because it is the only figure that makes two listings comparable. Because more than one fill weight is offered here, the per milligram figure is shown against each option rather than once at the top. Price over milligrams is the comparison. Done that way the choice between the sizes stops being a guess about which looks cheaper. Compare the HGH Fragment 176-191 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 HGH Fragment 176-191 vial

Each lot has its own certificate and the document is tied to the lot number printed on the vial label. On it you will find the analysis date, the HPLC purity figure together with the chromatogram, the mass spectrometry identity comparison, the Karl Fischer water result, and the issuing laboratory. Those seven items are the specification. Everything else on a vendor page is commentary. The certificate issued with the HGH Fragment 176-191 vial is specific to the lot and not to the product line.

Testing is contracted out to a laboratory with no ownership tie to the seller. It is a weaker guarantee than people sometimes assume and a stronger one than in house assay, for the plain reason that the people producing the number are not the people selling the vial. Stock is withdrawn from sale where the certificate for the HGH Fragment 176-191 vial does not support the figures here. See how to read a certificate of analysis and why we publish the batch that failed.

Purity, identity and moisture are three different measurements

Purity figures here come from liquid chromatography, which separates by affinity for a stationary phase. Each component eluting from the column registers as a peak, and purity is computed as the fraction of total peak area belonging to the target. One consequence follows: the percentage describes composition, so it tells you how much of the detected material is the right molecule, not how many milligrams are in the glass. The same methods are run on the HGH Fragment 176-191 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 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. 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.

What this listing refuses to say

Offered for laboratory research use by qualified purchasers and for nothing else. Not for human or veterinary consumption, not a food, not a drug. No physiological description is published, no dosing figure, no administration protocol and no reconstitution procedure, and requests for them are declined rather than answered quietly. 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.

Two things are true at once. This is sold as a laboratory reference material, and that sentence on its own settles nothing, because a page that describes effects, timing or quantities for a person is describing a use whatever the footer says. See research use only is not a legal strategy, and the FDA warning letter archive.

The certificate travels with the lot number and is linked above. Nothing in this description goes further than that document goes. This item sits on the metabolic peptide shelf, inside the research peptide catalogue, and every certificate we hold is on the lab results page.