Understand the source comparison
AHK-Cu vs AHK Copper: Research Applications Comparison
Before placing an order, verify what you're actually comparing. The table below clarifies the key attributes researchers should confirm. Not between 'AHK' and 'GHK' (which are identical), but between suppliers offering the same compound under different names.
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Before placing an order, verify what you're actually comparing. The table below clarifies the key attributes researchers should confirm. Not between 'AHK' and 'GHK' (which are identical), but between suppliers offering the same compound under different names.
- Molecular Formula
- C₁₄H₂₄N₆O₄Cu
- Identical across all labels. Same tripeptide-copper complex
- CAS Number
- 49557-75-7
- Cross-reference this before assuming compounds differ
- Copper-to-Peptide Ratio
- 1:1 (research-grade)
- Variable (0.6:1 to 1.4:1 in lower-grade formulations)
- Verify by ICP-MS. Ratio deviation reduces efficacy
- HPLC Purity Standard
- ≥98%
- ≥95% (supplier-dependent)
- Below 95%, expect contamination from deletion sequences
- Storage Stability (Lyophilised)
- 24 months at −20°C
- 12–24 months (depends on packaging)
- Light and moisture exposure degrade copper chelation
- Reconstituted Stability
- 4–6 weeks at 2–8°C
- 2–4 weeks (if copper ratio suboptimal)
- pH drift or temperature excursions accelerate breakdown
- The bottom line: if the CAS number matches and purity verification confirms ≥98% by HPLC with a 1:1 copper ratio, the name on the vial is irrelevant. Order based on data, not label.