Understand the source comparison
Dihexa Real vs Fake: Quality Comparison
Synthesis Method Solid-phase peptide synthesis (SPPS) with stepwise amino-acid coupling and real-time monitoring Solution-phase synthesis or bulk powder purchase from unregulated suppliers SPPS is the only method that guarantees exact amino-acid sequencing wit
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Synthesis Method
- Solid-phase peptide synthesis (SPPS) with stepwise amino-acid coupling and real-time monitoring
- Solution-phase synthesis or bulk powder purchase from unregulated suppliers
- SPPS is the only method that guarantees exact amino-acid sequencing without racemization—critical for receptor binding studies
- Purity Verification
- ≥98% purity confirmed by HPLC and mass spectrometry, with batch-specific COA including chromatograms and molecular weight data
- Generic purity claims (often 40–75% actual purity) with recycled COAs lacking batch identifiers or spectral data
- Batch-specific documentation is non-negotiable—generic COAs indicate the supplier doesn't synthesize in-house
- Appearance After Lyophilization
- Fine white to off-white powder, uniform particle size, no discoloration
- Yellow tint, clumping, crystalline structures, or inconsistent texture indicating degradation or contamination
- Visual inspection catches oxidation and contamination—discolored peptides are already degraded before reconstitution
- Solubility in Sterile Water
- Complete dissolution within 60 seconds at room temperature, clear to slightly opalescent solution, no residue
- Cloudy suspension, undissolved sediment, or requires heating/agitation—indicates excipients or aggregated fragments
- Solubility failures suggest the compound contains insoluble contaminants or has structurally degraded
- Reconstituted Stability
- ≥95% purity retained for 28 days at 2–8°C in bacteriostatic water
- 30–40% purity loss within 14 days, solution discoloration, precipitate formation, or pH shift
- Stability testing reveals whether the lyophilized powder was already compromised—rapid degradation invalidates dose-dependent research
- Documentation Traceability
- Unique batch number on every vial, linked to synthesis date, facility, purification logs, and third-party testing results
- No batch number, generic lot codes, or batch numbers that can't be verified through supplier records
- Chain-of-custody documentation proves the COA describes the actual product you received—absence of traceability is a disqualifying red flag