GLOW Peptide Blend: What's in It and How It Is Supplied

Blend summary

GLOW is a three-component research blend supplied as lyophilized powder in one sealed glass vial. Its stated total content is 70 mg, comprising GHK-Cu 50 mg, BPC-157 10 mg, and TB-500 10 mg. The three listed quantities sum to the declared total. This component-level description helps distinguish GLOW from blends with similar naming but different contents.

The specified amounts describe the formulation as supplied. They should not be confused with a chromatographic purity result or a measured peptide-content value. Those analytical measures answer different questions and depend on the procedure, reference materials, and reporting basis used for the particular lot. Recording the blend name, full component list, and product handle as searchable inventory metadata helps distinguish it from single-component listings and other formulations. This improves document retrieval without changing the scientific meaning of the stated quantities.

GHK-Cu component

GHK-Cu is the copper-associated tripeptide Gly-His-Lys·Cu(II). It is also referred to as GHK copper, copper tripeptide-1, or copper peptide. The stated formula is C14H24N6O4Cu and the approximate molecular weight is 403.9 g/mol. GHK-Cu was first described by Loren Pickart in 1973. In GLOW, this component is specified at 50 mg.

The tripeptide name identifies glycine, histidine, and lysine in that sequence, while the Cu(II) notation identifies the copper association. Because the complex includes a metal center, formula and mass conventions should be read together with any lot-specific analytical notes. The name alone does not specify every structural detail of the coordination environment.

BPC-157 component

BPC-157 is specified by the sequence Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val. The formula is C62H98N16O22, the molecular weight is 1419.5 g/mol, and the CAS number is 137525-51-0. The GLOW specification includes 10 mg. Reproducing the full sequence in technical records supports precise identification and avoids ambiguity from shorthand labels.

The one-letter sequence is GEPPPGKPA DDAGLV when spaces are used to improve readability; in standard compact notation it is GEPPPGKPADDAGLV. Residue order should be preserved exactly. Sequence notation is particularly useful when checking product descriptions against analytical assignments or internal inventory records.

TB-500 component

TB-500 is identified as the Ac-LKKTETQ fragment. Its stated molecular formula is C38H68N10O14 and its molecular weight is 889.0 g/mol. The prefix Ac denotes an acetyl group associated with the N-terminus in this nomenclature. The GLOW formulation specifies 10 mg of this component.

A reliable record retains both the fragment notation and the mass specification rather than reducing the component to a generic peptide label. This is important when comparing related materials or reconciling an analytical record with a product specification. The abbreviation and chemical details together provide a clearer identity statement.

Analytical records for a multi-component material

HPLC provides a chromatographic separation and profile under the method conditions stated in a report. In a blend, adequate separation and appropriate peak assignment matter. Peak area is a detector response, not automatically a component mass fraction. A COA should specify what each reported value represents and identify the method or test procedure behind it.

LC-MS can support component assignment through observed mass signals, and MALDI offers another mass-analysis format. Amino-acid analysis can provide residue-composition information after appropriate preparation. Analytical work on a mixture can require careful interpretation of overlapping signals, response differences, and sample handling. Method suitability and reference standards influence what conclusions can be drawn.

Identity, purity, and peptide content should be read as separate attributes. A purity figure based on chromatographic peak area does not by itself establish the absolute quantity of each component. Where the documentation reports content, check its units, basis, and method. Copper-associated GHK-Cu may also require interpretation of metal-containing species in mass analysis.

Vial and lot identification

GLOW is supplied in a sealed glass vial as lyophilized powder. Lyophilization yields a dry solid, and the sealed vial protects the material from routine environmental exposure before opening. Record the product name and lot identifier from the label when receiving or cataloguing the material. A visual description is not a substitute for the documented formulation or test results.

The lot-matched certificate of analysis (COA) is available for verification on the NF7 site’s Verify a lot page. Match the lot code on the COA to the vial, then review product identity, methods, dates, units, and reported results. Retaining this record with laboratory inventory supports later reconciliation and preserves the identity trail.

Blend documentation review

For a multi-component entry, use one row per named constituent and retain the declared amount, unit, and source wording in separate fields. The sum of listed amounts can be checked against the stated total, but arithmetic agreement alone does not verify identity or content. Record the calculation as an internal consistency check and leave analytical measurements attributed to the relevant report and sample.

Document control matters when several files accompany a single lot. Keep the vial label image, current product specification, and lot-matched COA together, noting each file date and identifier. If a component abbreviation appears on one record and a full name on another, document the mapping rather than replacing the original text. This makes subsequent review possible even when catalog language or file organization changes.

A receiving log may also note the shipping carton condition and any cold-chain indicator supplied with the parcel. These observations document receipt context and should remain distinct from the analytical conclusions in the COA.

Storage and shipping

Store the sealed lyophilized vial at 2–8 °C, protected from light and moisture. Keep it in a dry environment and leave the closure intact. When moving a cold sealed vial into a warmer environment, allow the sealed container to reach room temperature before opening the outer packaging. This helps reduce condensation on the container; avoid exposing the powder to moisture.

GLOW ships within the United States using cold-chain packaging. At receipt, document the lot and inspect the shipment, then place the sealed vial into the specified storage conditions. The shipment record documents dispatch and transit, while the COA documents lot-related analytical information. Keeping both records with inventory provides a clear account of the supplied material.