What purity should MGF have?
Understanding purity standards for MGF in research settings: what 99%+ HPLC means, how to read a COA, and why purity matters for experimental results.
The research-grade purity standard
For research-grade peptides like MGF, the gold standard is 99%+ HPLC-verified purity. HPLC (high-performance liquid chromatography) separates a peptide sample into its component molecules and measures the relative proportion of the target peptide versus any impurities, degradation products, or by-products from synthesis.
A 99%+ result means that less than 1% of the sample by mass is anything other than the target MGF molecule. For experimental reproducibility, anything below 95% introduces significant uncertainty — your results may be influenced by impurities rather than the peptide itself.
How to read a Certificate of Analysis (COA)
A real COA for MGF should contain:
- HPLC chromatogram — a visual trace showing peaks that correspond to the peptide's retention time
- Purity percentage — a specific number (e.g. 99.3%) derived from integrating the chromatogram
- Mass spectrometry confirmation — a molecular-weight reading matching the theoretical mass of MGF
- Batch/lot number — tied to a specific manufacturing run
- Testing lab + date — independent third party, not self-certified
- Expiry date — based on stability studies for the compound
If any of these are missing, you cannot rely on the purity claim. Every Peptify COA includes all of the above and is downloadable from the product page.
Why impurities matter in research
Even small amounts of impurities in a research peptide can bind to unintended targets, trigger off-target effects in cell culture, or confound measurement assays. For quantitative research (dose-response curves, binding kinetics, concentration-dependent effects), using a <99% pure peptide can invalidate your data entirely.
Buy MGF for research
99%+ HPLC-verified MGF in stock. Every vial ships from the UK with a batch-specific Certificate of Analysis. Same-day dispatch on orders before 1pm.
Frequently asked questions
What is MGF?
MGF (Mechano Growth Factor) is produced in response to mechanical stimulus or exercise stress. It is studied in the satellite-cell activation and skeletal-myocyte pathway literature.
How does MGF relate to IGF-1?
MGF is a splice variant of IGF-1, sharing structural elements but expressed in response to different stimuli. Research has examined whether the two variants activate overlapping or distinct downstream pathways.
What purity does Peptify MGF meet?
Peptify MGF is 99%+ HPLC-verified with a batch-specific Certificate of Analysis from Janoshik Analytical, published on the product page and downloadable directly.