KLOW Blend

KLOW Blend is a four-component synthetic peptide blend supplied as a single lyophilized preparation. The four components — GHK-Cu (a copper-binding tripeptide, CAS 89030-95-5, present at 57.87 mg per vial), BPC-157 (a synthetic pentadecapeptide, CAS 137525-51-0, present at 11.66 mg per vial), KPV (the Lys-Pro-Val tripeptide corresponding to residues 11–13 of α-melanocyte-stimulating hormone, CAS 67727-97-3, present at 9.99 mg per vial), and full-length Thymosin β4 (a 43-amino-acid peptide, CAS 77591-33-4, present at 11.70 mg per vial; also referred to in the research-peptide market by the synonym TB-500) — are synthesized independently by solid-phase peptide synthesis (SPPS) and characterized individually by HPLC (purity, 214 nm UV detection) and LC-MS/MS (identity) prior to blending.

This product is supplied as a blue lyophilized powder — the blue color derives from the Cu²⁺ chelate present in the GHK-Cu component. The lot referenced here (Klow-044-TPL) has a documented overall preparation purity of 99.685% and a total net peptide content of 91.22 mg per vial across the four components (labeled 80 mg nominal). Third-party characterization was performed by Freedom Diagnostics (USA). The product is intended exclusively for in-vitro laboratory research and analytical applications.

The four components appear across separate strands of the peer-reviewed literature: GHK-Cu is referenced in extracellular matrix and dermal research (originally characterized in the laboratory of Loren Pickart at UCSF); BPC-157 is referenced in gastrointestinal and connective-tissue in-vivo model research (originally characterized in the laboratory of Predrag Sikirić at the University of Zagreb); KPV is referenced in α-MSH-fragment and anti-inflammatory receptor research; and full-length Thymosin β4 is referenced in cytoskeletal actin-binding and tissue-model research.