TB-500 Nasal Spray — 10mg
Research-grade TB-500 in a nasal atomiser format — 10mg lyophilized peptide supplied with sterile diluent for researcher reconstitution. TB-500 is full-length Thymosin Beta-4, a 43-amino-acid peptide studied for its role in actin polymerisation and cellular migration. 99%+ purity verified by an independent third-party lab via HPLC and mass spectrometry.
Ships unmixed — reconstitute on arrival.
For laboratory research use only.
Not for human or veterinary use.
Not intended for diagnosis, treatment, cure, or prevention of any disease.
Use only in controlled laboratory settings by qualified personnel following appropriate safety procedures.
TB-500 is full-length Thymosin Beta-4, a 43-amino-acid peptide studied for its role in actin polymerisation and cellular migration. This nasal atomiser format supplies the same research-grade TB-500 stocked in vial form.
FULL-LENGTH TB-500 — NOT THE 17-23 FRAGMENT
This listing is the complete 43-amino-acid Thymosin Beta-4 peptide. Durham Peptides separately stocks TB-500 Frag 17-23, which contains only the seven-residue Ac-LKKTETQ actin-binding fragment taken from the middle of that sequence. The two are different materials and are not interchangeable in a protocol — if the work calls for the short fragment, order the TB-500 Frag 17-23 listing instead. This bottle contains the full-length peptide.
SHIPPED UNMIXED — AND WHY THAT MATTERS
Durham Peptides does not ship pre-diluted nasal sprays. Peptides in solution are materially less stable than in lyophilized form, so a bottle that is mixed at the warehouse begins degrading the day it is filled and continues to do so in transit and in storage. Instead, the lyophilized peptide and the diluent travel separately and the researcher reconstitutes on arrival — which means undegraded lyophilized material and a known, controlled in-use window rather than an unknown one.
Every nasal spray ships with sterile water preserved with 0.3% potassium sorbate, supplied specifically for this format. No separate bacteriostatic water purchase is required.
FORMAT
Ships unmixed — stable lyophilized material, not a solution degrading in transit
Diluent included — sterile water with 0.3% potassium sorbate, no separate purchase needed
Full-length 43-amino-acid peptide — the complete Thymosin Beta-4 sequence, not the shortened fragment
Verified identity — MS-confirmed against a third-party lab report you can check independently
WHAT RESEARCHERS LOOK AT
Actin polymerisation and G-actin sequestration in cell-motility models
Cellular migration signalling in preclinical models
Comparative activity against the shorter TB-500 Frag 17-23 in parallel study arms
Post-reconstitution stability across the in-use window
QUICK SPECS
Format: Nasal atomiser, supplied unmixed
Form: Lyophilized peptide powder plus separate sterile diluent
Net peptide per bottle: 10 mg
Bottle volume: 10 mL
Included diluent: Sterile water with 0.3% potassium sorbate
Purity: ≥99% (HPLC verified)
Identity: MS-verified (per COA)
Storage: 2–8°C before and after reconstitution, protect from light
Reconstitution: Diluent supplied — no separate bacteriostatic water required
IDENTITY BASICS
Compound: TB-500 (full-length Thymosin Beta-4), CAS 77591-33-4
Sequence length: 43-amino-acid peptide
Molecular formula: C212H350N56O78S
Molecular weight: 4963.44 g/mol
Class: Full-length thymosin beta-4 peptide — not the Ac-LKKTETQ fragment
WHY CHOOSE DURHAM PEPTIDES FOR NASAL SPRAYS?
Shipped unmixed for freshness — not pre-diluted at the warehouse
Sterile diluent included in every bottle
independently lab-tested with verifiable COA keys
Same-day shipping across Canada (orders before 4:00 PM EST)
Free shipping on orders over $200 CAD
Transparent Canadian pricing, shown above in CAD
DOES THE NASAL SPRAY COME PRE-MIXED?
No, and that is deliberate. Peptides are materially less stable in solution than in lyophilized form, so a pre-diluted bottle starts degrading the day it is filled. Durham Peptides ships the lyophilized peptide and the sterile diluent separately so the researcher reconstitutes on arrival — undegraded material, and a known in-use window rather than an unknown one.
DO I NEED TO BUY BACTERIOSTATIC WATER SEPARATELY?
No. Every nasal spray ships with its own diluent — sterile water preserved with 0.3% potassium sorbate, supplied specifically for the atomiser format. This differs from the lyophilized vials in our catalogue, which are reconstituted with bacteriostatic water sold separately.
WHAT IS TB-500?
TB-500 is full-length Thymosin Beta-4, a 43-amino-acid peptide studied for its role in actin polymerisation and cellular migration.
IS THIS THE FULL-LENGTH PEPTIDE OR THE 17-23 FRAGMENT?
This is the full-length peptide — all 43 amino acids of Thymosin Beta-4. Durham Peptides lists TB-500 Frag 17-23 as a separate product, and that one contains only the seven-residue Ac-LKKTETQ actin-binding fragment. They are different materials and are not interchangeable. If the protocol calls for the short fragment, order the TB-500 Frag 17-23 listing instead.
NASAL SPRAY VS VIAL — WHICH SHOULD I CHOOSE?
Both supply the same research-grade TB-500. The vial — TB-500 — 10mg — is the flexible option, since the researcher chooses the reconstitution volume and therefore the working concentration. The nasal atomiser arrives with matched diluent included.
HOW SHOULD IT BE STORED AFTER RECONSTITUTION?
Keep the bottle refrigerated at 2–8°C and protected from light both before and after reconstitution. Once reconstituted, use within an appropriate research timeframe — a peptide in solution has a materially shorter usable life than the sealed lyophilized material.
HOW IS IT SHIPPED IN CANADA?
Orders placed and paid before 4:00 PM EST ship the same business day via Canada Post Xpresspost with full tracking. Shipping is domestic from within Canada, so there are no customs delays or border holds.
IS THE COA VERIFIABLE?
Yes. Every batch is independently lab-tested with a unique report key you can confirm independently — see our guide on how to verify a lab report key.
For laboratory research use only.
Not for human or veterinary use.
Not intended for diagnosis, treatment, cure, or prevention of any disease.
Use only in controlled laboratory settings by qualified personnel following appropriate safety procedures.
Volume discounts apply to your whole order, not to a single item. Enter the code at checkout.
Spend $200 or more — 10% off with code VOLUME10
Spend $500 or more — 15% off with code VOLUME15
Spend $1,000 or more — 20% off with code VOLUME20
Spend $2,000 or more — 25% off with code VOLUME25
The thresholds are worth more than they look. A $499 order costs you $449. Add one more $20 vial to reach $500 and you pay $425 — more product, $24 less. Free shipping over $200.
Ordering at volume? The full catalogue is available at wholesale pricing through a five-tier programme.
Minimum 10 units per product, any mix of products in one order
Accounts open at $2,000 per order
Tiers are set on 12-month volume and move up automatically
Canadian stock, same-day dispatch, shipping included
Apply at durhampeptides.ca/wholesale and we come back within one business day. Single vials and multi-packs on this page are available to everyone at the prices shown — no account needed.
