Description
Listed as a laboratory reference material, the MGF 5mg vial is the twenty-four residue C terminal splice variant of IGF-1, catalogued as MGF, freeze dried and sealed under vacuum. The fill weight is 5 mg of net peptide content. The cake is white to off-white. Not for human or veterinary consumption, and neither a food nor a drug.
The label on the MGF 5mg vial carries the compound, the fill weight and the lot number, and that is the extent of it.
What is in the MGF 5mg vial
The table below is the standing description of the MGF 5mg vial. Measured values live on the lot certificate.
| Compound. | MGF |
|---|---|
| Vial content. | 5 mg net peptide content |
| Form. | Lyophilized, white to off-white, sealed under vacuum |
| Sequence length. | Twenty-four residues |
| Purity. | HPLC, percent of total peak area |
| Identity. | Mass spectrometry against expected mass |
| Water. | Karl Fischer titration, percent by weight |
| Documentation. | Independent certificate of analysis, tied to the lot number |
| Price basis. | About $15.80 per milligram as priced |
| Supplied for. | Laboratory research use only, not for human or veterinary consumption |
Why it is a powder, and what a milligram of the MGF 5mg vial costs
Lyophilized means the material was frozen and then dried under reduced pressure, so the ice sublimed straight to vapour. Heat drying would damage the sequence, and a liquid product would arrive degraded. The finished cake is porous and light. It can look like a wafer, a crust, or almost nothing at all in a small fill, and that variation is normal rather than a defect. Nothing about the MGF 5mg vial is sold by volume.
The arithmetic
Milligram content is the unit the MGF 5mg vial is sold in, because it is the only figure that makes two listings comparable. At the price shown, that works out at roughly $15.80 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 MGF 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.
Reading the certificate for this lot
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 MGF 5mg 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 MGF 5mg 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
The water figure on the certificate is a Karl Fischer result. It is there because moisture is both a stability problem and a weighing problem. The chemistry is a titration against iodine that consumes water stoichiometrically, which makes it a direct measurement instead of an estimate. The same methods are run on the MGF 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.
Catalogue names and storage
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. MGF stays as three letters. The expanded form of the abbreviation is a statement about activity, so it is not written out in the title, the web address, the image description or the body. The catalogue name carried by the MGF 5mg vial is the one the trade uses, and a trade name is not an identifier.
Dry material is forgiving within limits. Refrigeration at 2 to 8 degrees Celsius suits short storage and minus 20 degrees Celsius or lower suits long storage, with light and humidity the two things to keep away from the vial. Keep the certificate with the vial, since the lot number is the only thing joining the two.
Research use only, and what this page will not tell you
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.
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.
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 secretagogue shelf, inside the research peptide catalogue, and every certificate we hold is on the lab results page.
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