P21 (P21 Peptide) Testing Services
P21 is a synthetic peptide derived from CNTF (ciliary neurotrophic factor) studied for its neurogenic and cognitive effects. It has been investigated in neurodegenerative disease and cognitive enhancement research.
Research Applications
Common research areas for P21 (P21 Peptide)
- Neurogenesis research
- Cognitive enhancement studies
- Neurodegenerative disease research
- CNTF pathway studies
Peptide Information
Molecular details and sample requirements
Sequence / Structure:
Synthetic 21-aa neurogenic peptide
Molecular Weight
~2200 g/mol
Formula
Synthetic peptide
Recommended Purity
≥95%
Sample Size
1-2 mg lyophilized
Our P21 (P21 Peptide) Testing Services
Comprehensive analytical testing to ensure P21 (P21 Peptide) quality and purity
Purity Testing
HPLC analysis to verify P21 (P21 Peptide) purity levels
Identity Verification
Mass spectrometry to confirm molecular identity
Third-Party Verification
Independent COA verification for P21 (P21 Peptide)
Certificate of Analysis
Official US laboratory documentation
Ready to test your peptides?
Send your peptide name, sample count, and the tests you need. We return a fixed-price quote, usually within one business day.
- validated analytical methods, independent of any supplier
- 9-11 business day standard turnaround
- Traceable COA with chromatograms and method parameters
P21 (P21 Peptide) Testing Methodology
Our analytical workflow for P21 (P21 Peptide) follows USP <1225> guidance for validated chromatographic methods. Each lot is processed by a credentialed analyst with documented chain of custody.
Step 1
Sample intake & chain of custody
Your P21 (P21 Peptide) sample (1-2 mg lyophilized) is logged at our Florida lab with a unique ID, photographed, and stored at -20 °C until analysis.
Step 2
Reverse-phase HPLC purity
P21 (P21 Peptide) is dissolved in mobile phase and run on a C18 column with a water/acetonitrile gradient containing 0.1% TFA. UV detection at 214 nm quantifies the main peak and any related impurities.
Step 3
LC-MS identity confirmation
An aliquot is analyzed by liquid chromatography-mass spectrometry. The observed monoisotopic mass is compared against the theoretical molecular weight (~2200 g/mol) for P21 (P21 Peptide) to confirm identity.
Step 4
Impurity profiling & reporting
Related substances, truncations, and oxidation products are quantified. Findings are compiled into a signed Certificate of Analysis with chromatograms, mass spectra, and analyst interpretation.
P21 (P21 Peptide) Purity Notes
Recommended research-grade purity for P21 (P21 Peptide) is ≥95%. Lot-to-lot variation is common with solid-phase synthesis, so independent verification matters.
Common impurities to watch
- Truncated sequences from incomplete coupling
- Deletion peptides missing one or more residues
- Oxidation of methionine, tryptophan, or cysteine
- Residual TFA, acetate, or solvent counter-ions
- Aggregates and dimers from improper storage
What our COA confirms
- Main peak purity by HPLC area %
- Observed vs theoretical mass (~2200 g/mol)
- Named impurities ≥ 0.1% area
- Net peptide content where applicable
- Method, column, and instrument metadata
P21 (P21 Peptide) Handling, Storage & Safety
Guidance below is for laboratory and research personnel only. P21 (P21 Peptide) is supplied for research use and is not intended for human or veterinary use.
Storage
Store lyophilized P21 (P21 Peptide) at -20 °C, protected from light and moisture. After reconstitution, aliquot and store at -80 °C; avoid repeated freeze-thaw cycles.
Reconstitution
Reconstitute in bacteriostatic or sterile water in a clean environment. Allow vials to reach room temperature before opening to prevent moisture condensation on the powder.
PPE & shipping
Handle with gloves, lab coat, and eye protection. Ship samples to ACS overnight on dry ice or cold packs in a rigid, leak-proof container with a packing slip referencing your quote.
This page is informational and does not constitute medical advice. Consult your institution's safety officer and SDS before working with P21 (P21 Peptide).
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