Source comparison
CJC-1295 no DAC Real vs Fake: Verification Comparison
Reconstitution Clarity Complete dissolution in <30 seconds; zero turbidity or particulate Persistent cloudiness, floating particles, or sticky residue on vial walls Immediate visual test. Turbidity = automatic rejection HPLC Purity Single dominant peak at expe
This comparison does not assign a generated winner or score.
- Reconstitution Clarity
- Complete dissolution in <30 seconds; zero turbidity or particulate
- Persistent cloudiness, floating particles, or sticky residue on vial walls
- Immediate visual test. Turbidity = automatic rejection
- HPLC Purity
- Single dominant peak at expected retention time; >98% purity
- Multiple secondary peaks, purity <95%, or no chromatogram provided
- Third-party CoA with chromatogram image is non-negotiable
- Molecular Mass
- 3367.9 Da (±0.5 Da) via mass spectrometry
- Mass outside range, or mass spec data not provided
- Confirms correct amino acid sequence and modifications
- Physical Appearance
- Lyophilised white powder; no clumping or discoloration
- Yellow/brown tint, moisture inside vial, or pre-mixed solution
- Degraded peptides show visible color changes
- Storage Conditions
- Shipped frozen or with cold packs; stored at −20°C before reconstitution
- Shipped at ambient temperature; stored improperly or pre-mixed
- Temperature excursions denature peptide structure irreversibly
- Certificate of Analysis
- Third-party lab CoA with batch number, HPLC, and mass spec
- No CoA, vendor-issued CoA only, or missing chromatogram images
- Independent verification eliminates self-certification bias