Procurement comparison
Hexarelin COA: Data Element Comparison
HPLC Purity % Percentage of target peptide vs impurities <97% or mismatched with chromatogram Below 98% indicates failed synthesis or degradation. Reject batch HPLC Main Peak Retention Time Compound identity based on elution behavior Outside 12–15 min window o
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- HPLC Purity %
- Percentage of target peptide vs impurities
- <97% or mismatched with chromatogram
- Below 98% indicates failed synthesis or degradation. Reject batch
- HPLC Main Peak Retention Time
- Compound identity based on elution behavior
- Outside 12–15 min window on C18 column
- Retention time mismatch suggests wrong peptide or contaminated column
- Mass Spec m/z Value
- Molecular weight confirms chemical structure
- >±1 Da from 887.04 Da target
- Off-target m/z means the compound isn't hexarelin. Do not use
- Secondary Impurity Peaks
- Synthesis byproducts, degradation products
- Any peak >1.5% of total area
- High impurity peaks reduce potency and introduce unknown contaminants
- Batch Lot Traceability
- Confirms vial matches COA and manufacturing date
- Lot mismatch or >18-month-old manufacturing date
- Mismatched lots are mislabeled product. Traceability failure disqualifies batch