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 Pharma from the field. Every compound sold on NexPep is made by Nexora Pharma; here's exactly how.
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 Pharma 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 until 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
Ready to Verify for Yourself?
The Certificate of Analysis for your specific batch is available on request — just ask. You can also request a sample CoA before placing your first order.