Molecular Characteristics
Complete Specifications
Structural Composition
BPC-157 (15-amino-acid synthetic peptide) + TB-500 (43-amino-acid Thymosin Beta-4 analog peptide)
Physical Properties
This blend combines BPC-157, a 15-amino-acid synthetic peptide, with TB-500, a 43-amino-acid Thymosin Beta-4 analog. Because the formulation contains two structurally distinct peptides, overall molecular formula and molecular weight are inherently variable and depend on blend ratios and hydration state. Lyophilized presentation supports storage stability, while protection from moisture, light, and repeated freeze–thaw cycles helps maintain structural integrity and analytical consistency for laboratory and research applications.
Analysis & Documentation
Identity
Each production lot is checked against the reference structure recorded for this compound:
- Classification — Dual-peptide blend (BPC-157 + TB-500)
- Molecular formula — Variable (multi-component peptide blend)
- Expected mass — Variable (multi-component peptide blend)
- CAS registry — Not assigned (dual-peptide blend)
- Chain length — Variable (15 aa peptide + 43 aa peptide)
- PubChem CID — Not available
Analytical Methods
Testing is carried out per lot by an independent laboratory. The methods measure what the material is and how much of it is the target compound:
- RP-HPLC — reverse-phase separation of the target from process-related impurities; purity is reported as area percent of the main peak
- Mass spectrometry — observed mass compared against the expected molecular mass above
- Retention time — compared against a reference standard run under the same conditions
- Chromatogram — reproduced on the certificate so the peak and any shoulders can be inspected directly
Material & Documentation
What arrives, and how to tie it back to its paperwork:
- Appearance as supplied — White to off-white lyophilized powder (blend-dependent)
- Solubility — Water, phosphate-buffered saline (PBS)
- Lot number — printed on the container label and used to look up the certificate
- Certificate — indexed by lot at Certificates of Analysis
Laboratory Handling and Storage Protocols
Lyophilized Powder Storage
- Store at –20°C to –80°C in the original, sealed vial
- Protect from light exposure and moisture
- A desiccated storage environment is recommended
- Stability data suggests extended stability when stored at −20 °C or below.
Reconstituted Solution Storage
- Short-term storage: Up to 7 days at 4°C
- Long-term storage: Store at –20°C in aliquots
- Use single-use aliquots to preserve peptide integrity
- Minimize freeze–thaw cycles; single-use aliquots are strongly recommended
Stability Characteristics
BPC-157 + TB-500 Blend is a multi-component synthetic peptide research formulation. As a composite preparation, stability depends on proper cold storage of the lyophilized material, careful reconstitution, and minimized freeze–thaw exposure. When handled according to standard peptide laboratory protocols, the blend maintains structural integrity and solubility suitable for in vitro and analytical research applications.
Frequently Asked Questions
What is the BPC-157 + TB-500 blend?
This is a research formulation combining:
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BPC-157 — a synthetic peptide fragment originally derived from gastric peptide research
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TB-500 — a synthetic fragment of Thymosin Beta-4
The blend allows for investigation of complementary signaling mechanisms within a single preparation.
Why combine BPC-157 and TB-500?
Researchers may combine these peptides to examine:
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Potential synergistic signaling interactions
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Complementary pathway activation
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Comparative effects versus individual peptide controls
This approach may streamline certain experimental protocols.
Is this a single peptide?
No. This is a multi-peptide blend, not a single amino acid sequence. Each component maintains its own structural and functional characteristics within the formulation.
How is the BPC-157 + TB-500 blend supplied?
The blend is typically supplied as a lyophilized (freeze-dried) powder in sealed research vials to maintain stability during storage and transport.
How should unreconstituted blend vials be stored?
Lyophilized blend vials should be stored:
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Long-term: −20 °C to −80 °C
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Short-term: 2–8 °C
Keep vials sealed and protected from light and moisture until use.
How should reconstituted blend solutions be handled and stored?
Once reconstituted:
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Store at 2–8 °C for short-term laboratory use
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For extended storage, aliquot and freeze at −20 °C or below
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Minimize freeze–thaw cycles using single-use aliquots
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Gently swirl to mix; avoid vigorous agitation
Does this blend require a Certificate of Analysis (COA)?
Yes. A Certificate of Analysis (COA) should be available for each batch, verifying identity and purity for both peptide components within the blend to ensure research quality and traceability.
Is the BPC-157 + TB-500 blend FDA-approved?
No. This blend is not FDA-approved as a drug, supplement, or therapeutic product. It is sold exclusively as a research compound blend and must not be marketed or used for diagnostic, therapeutic, or consumption purposes.
Research Background
This pairing is widely nicknamed the “Wolverine stack”. For a referenced overview — including the single rat study that tested the two peptides together and reported no additional benefit from the combination over either peptide alone — see What Is the Wolverine Peptide Stack? and What Is TB-500? Thymosin Beta-4 Research Background. Both cite peer-reviewed sources and contain no dosing guidance.
This product is not for human consumption. It is sold strictly for research and educational purposes and is not intended to diagnose, treat, cure, or prevent any disease.
Any clinical data or research information referenced on this page is derived from peer-reviewed scientific literature and official publications. This information is provided for educational reference only and does not constitute medical advice or product claims.
By purchasing this product, you acknowledge that you are a qualified researcher and agree to use it in full compliance with all applicable laws and regulations.
