The Difference Between ≥99% and “About 99%”
Is Everything.
Purity claims are easy to make. Proving them — every batch, to an independent third party — is what separates Nexora from the field. Here's exactly how we make every compound in our catalog.
From Amino Acid to Verified Compound
Raw Material Sourcing
Protected amino acids sourced exclusively from GMP-certified suppliers. Every incoming material is identity-tested before entering production. No shortcuts at the source — because impurities compound at every stage.
Solid-Phase Peptide Synthesis (SPPS)
All Nexora peptides are synthesized using Fmoc solid-phase methodology — the gold standard for research-grade peptide production. Automated synthesis under inert atmosphere ensures batch-to-batch consistency.
Purification
Post-synthesis crude peptide is purified by preparative reverse-phase HPLC. Our purification protocols are optimized per compound to achieve ≥99% purity across all catalog items — not as a target, but as a floor.
Quality Analysis
Every batch undergoes analytical HPLC for purity verification and mass spectrometry for molecular identity confirmation. Results are recorded in a batch-specific Certificate of Analysis.
Third-Party Verification
CoA data is verified by an independent accredited laboratory before any batch is approved for release. No self-reported purity. No internal-only testing. External verification is non-negotiable.
Lyophilization & Packaging
Purified peptides are lyophilized under controlled conditions to maximize shelf stability. Sealed under inert gas in pharmaceutical-grade vials. Temperature-controlled storage maintained through dispatch.
Manufacturing Specifications
Why Purity Precision Matters in Research
A compound at 92% purity isn't 8% less effective — it's 8% something else. In research settings, impurities introduce variables that can invalidate entire experimental series. When a result doesn't replicate, impure compound is rarely the first suspected cause — but it's often the real one.
Our ≥99% standard isn't marketing. It's the number that eliminates impurity as a confounding variable in your research. Every Certificate of Analysis documents the exact purity of every batch — so you know precisely what entered your experiment.
What Our CoA Includes
- Compound name, batch number, and production date
- HPLC chromatogram with % purity calculation
- Mass spectrometry result confirming molecular identity
- Storage recommendations and stability data
- Third-party laboratory name and accreditation
- Lot-specific QC release authorization
Available Compounds
Full catalogReady to Verify for Yourself?
Every order ships with the CoA for your specific batch. Request a sample CoA before placing your first order.