# Buy TB-500 10 mg in Australia

Supplied by Australian Research Peptides Pty Ltd to laboratories and
researchers in Australia, for in vitro research purposes only. Stock is
held and dispatched within Australia.

Australian Research Peptides sells TB-500 10 mg to laboratories and researchers in Australia, where the tamper-sealed vial costs $119.99, but it is out of stock right now. The contents, independently lab-tested before release, are dried to a solid: Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln, a seven-amino-acid chain copied from thymosin beta-4 that binds free actin, matching positions 17 to 23 of the 43-residue parent protein. It is studied in cell-migration research as that protein's actin-binding piece and posted to every state and territory. Not for people or animals. In vitro research purposes only.

Research context: actin binding and cell migration.

## Strengths, prices and availability

| Strength | Price (AUD) | Availability | SKU |
| --- | --- | --- | --- |
| 10 mg | $119.99 | Out of stock | 40000 |

## Specifications

| Property | Value |
| --- | --- |
| Scientific name | TB-500 (N-terminally acetylated thymosin beta-4 fragment 17-23) |
| Compound class | Synthetic acetylated heptapeptide; actin-binding fragment of thymosin beta-4 |
| Appearance | White to off-white lyophilised powder |
| Packaging | Sealed, tamper-evident glass vial |
| Storage | Sealed vial kept frozen in a desiccator, out of bright light, and returned to ambient temperature before opening |

## About

TB-500 is studied in actin-binding and cell-migration research, in cell-culture and preclinical models only. What the literature establishes is a property of the molecule: LKKTETQ is the actin-binding stretch of thymosin beta-4, and 2003 work in the FASEB Journal mapped the parent protein's assay activity to that seven-residue span rather than to the rest of the chain. Australian Research Peptides supplies the fragment for in vitro use only.

TB-500 — commonly written TB500 or TB 500 as well — is a heptapeptide, which means a chain of seven amino acids. The sequence is Leu-Lys-Lys-Thr-Glu-Thr-Gln, written LKKTETQ, with an acetyl cap on the N-terminal end. Those seven match positions 17 to 23 of thymosin beta-4. That distinction matters, because the two names get swapped in print and a study on the 43-amino-acid protein is not a study on this fragment.

Australian Research Peptides supplies TB-500 in one strength, as a freeze-dried powder sealed inside a tamper-evident glass vial. PubChem records the free acid form as C38H68N10O14, around 889 g/mol, under CAS 885340-08-9. Those values are not printed on this listing as a specification, because the salt and terminal form of the supplied material is not confirmed and both figures move with it. The certificate of analysis describes the batch in hand.

## Questions

### Where can I buy TB-500 in Australia?

Australian Research Peptides is where TB-500 — also searched as TB500, TB4 or thymosin beta — can be bought in Australia, listed as a 10 mg lyophilised vial for in vitro research. TB-500 is independently lab-tested before release, and the CoA library lists every certificate ARP has published, per product and strength. TB-500 has nothing to send today, and the same weekday cut-off applies once a batch lands by Express or tracked standard post, covering every state and territory — all posted domestically, so customs never sees it.

### What is TB-500 also known as?

TB-500 is also written TB500 or TB 500, searched as TB 500 peptide, and named formally as the N-terminally acetylated thymosin beta-4 fragment 17-23. Searchers type tb4 or beta thymosin too, and databases index it under CAS 885340-08-9 and [PubChem CID 62707662](https://pubchem.ncbi.nlm.nih.gov/compound/62707662). Thymosin beta-4 alone names the 43-residue parent protein, not this seven-amino-acid chain. All those names point at one vial, posted by Australian Research Peptides from inside Australia, so no customs desk is involved.

### What's the difference between TB-500 and BPC-157?

They are unrelated peptides that often get discussed together. TB-500 is seven amino acids taken from thymosin beta-4, and its published work centres on actin binding and on angiogenesis, the growth of new blood vessels, measured in cell culture. BPC-157 is a longer chain of fifteen amino acids, from a sequence first described in gastric juice, and its literature sits elsewhere. Australian Research Peptides lists each on its own page and also dries the two together in one vial.

### What is TB-500?

TB-500 is a synthetic peptide of seven amino acids corresponding to the region of thymosin beta-4 that binds actin, the scaffolding protein inside a cell ([Philp 2003](https://pubmed.ncbi.nlm.nih.gov/14500546/)). Thymosin beta-4 itself occurs naturally in most mammalian cells. It is a fragment rather than the whole protein, which is the distinction the two names conceal and the reason the two are not interchangeable in a study.

### How does TB-500 work?

TB-500 is the actin-binding stretch of thymosin beta-4, lifted out and made on its own. Actin is the protein cells build their internal scaffolding from, and [UniProt](https://www.uniprot.org/uniprotkb/P62328/entry) records the parent as binding loose, single actin units and stopping them assembling. That binding property is what the seven-amino-acid fragment was isolated for, and it is the reason cell-culture work focuses on this stretch rather than the whole protein. It is a molecular property, measured in glassware.

### Which laboratory models has TB-500 been studied in?

TB-500 has been studied in cell-migration and actin-binding assays and in animal models of tendon, ligament and muscle damage — laboratory and animal systems only, and it is not used to treat anything. Pairing it with BPC-157 is a common line of enquiry, and the one published test of the pairing, in rats, found no added effect over either peptide alone. Australian Research Peptides lists TB-500 and BPC-157 separately and also as one pre-combined blend vial, and supplies each to laboratories and researchers for in vitro research only, never for administration to a person or an animal.

### What does the research show about TB-500?

Published TB-500 research is preclinical work in animals and cell culture. The seven-amino-acid fragment appears in cell-culture tests measuring whether endothelial cells, the cells that line blood vessels, move and start new vessels. The published record stops at those model systems. This evidence context does not establish what happens in people or animals outside those studies.

### What exactly is supplied in a TB-500 vial?

A TB-500 vial holds one freeze-dried compound, the acetylated heptapeptide Ac-LKKTETQ, which is seven amino acids with an acetyl cap, under a tamper-evident seal. The acetyl cap belongs to the molecule itself rather than being something added to it, which is why Ac- sits inside the name. Nothing else shares the glass. Both blends that mention TB-500 spread their stated milligrams over more than one peptide.

### How many amino acids are in TB-500?

TB-500 contains seven amino acids: Leu-Lys-Lys-Thr-Glu-Thr-Gln, written LKKTETQ. Those residues come from positions 17 to 23 of thymosin beta-4, which has 43 amino acids in all. The acetyl group on the front end is a chemical cap rather than an eighth amino acid, so it changes the measured mass without changing the count. Seven residues make TB-500 a heptapeptide.

### How do I pay for TB-500?

You will know a TB-500 payment has been matched because a confirmation email follows it; until that arrives, the order is placed but not paid. A PayID payment or a bank transfer is matched when the money lands. If the confirmation has not come through well after your bank shows the money gone, that is the point to contact support with the reference.

### How do I find out when TB-500 is back in stock?

Australian Research Peptides runs a restock alert for TB-500: leave an email address against the line and one message is sent when stock lands. It is a single notification rather than a subscription — no newsletter, no follow-up mail, and the address is used for that one purpose. Nothing is charged and nothing is reserved by registering.

### Is it normal for a TB-500 vial to look empty?

Expect very little to see: TB-500 is an acetylated seven-amino-acid fragment, among the shortest chains stocked anywhere, and ten milligrams of it dries to a wisp on the floor of the glass — sometimes no more than a dull patch where the surface stops being perfectly transparent. Sublimation — the water going off as vapour without melting first — leaves solid exactly where frozen liquid sat, so a cake broken up in transit can look like nothing whatsoever.

### How should TB-500 be stored?

TB-500 carries two lysines and a glutamate in its seven-amino-acid chain. GenScript names exactly those amino acids as the ones to keep in a desiccator inside a tightly capped vial. TB-500 has no cysteine, methionine or tryptophan, so oxidation is not the main worry for TB-500. Keep the sealed dry vial in a freezer, out of bright light. Bachem says a desiccator should bring the glass back to ambient before anyone breaks the seal, because absorbed moisture lowers peptide content.

### How do you reconstitute TB-500?

TB-500 dissolves readily in water, because six of its seven amino acids are polar or charged. Warm the sealed vial, run the liquid down the glass, then swirl instead of shaking. Australian Research Peptides publishes no fill volume for the vial, and the diluent is chosen by the laboratory.

### How long does reconstituted TB-500 keep?

TB-500 ends in glutamine, one of the residues Bachem and the NIBSC both flag as shortening a dissolved peptide's life. Once mixed, hold it between 2 and 8 °C and use it inside eight to twelve weeks, the window Australian Research Peptides publishes for every research peptide it lists. Keep it dark. Freeze single-use aliquots below -15 °C if you need longer.

### What volume of diluent goes into a TB-500 vial?

TB-500 is supplied as a single 10 mg vial, and the volume of diluent added changes nothing about the quantity in it. More liquid does not weaken the peptide, only the solution — the vial holds the same 10 mg either way. Australian Research Peptides publishes no fill volume, so the choice and the record of it are yours.

### Why is TB-500 cloudy after mixing?

TB-500 is a short, readily soluble fragment that normally clears without difficulty, so a milky look immediately after water goes in is usually foam rather than the peptide. Give it several undisturbed minutes. Anything staying opaque, or fine strands drifting through the liquid, means something besides air is present — that is aggregation, and further swirling will not reverse it.

### What is TB-500 dissolved in for laboratory work?

TB-500 ships as a dry powder and is dissolved in an aqueous diluent for laboratory work. The sealed glass holds nothing but the acetylated seven-amino-acid peptide, so only the diluent is added. Diluent is what that liquid is called once it has a job to do.

### Who supplies TB-500 in Australia?

Australian Research Peptides is the supplier of TB-500 to laboratories and researchers in Australia, listing the single 10mg vial within its Cell Signalling Research range. Searches for tb500, thymosin beta or tb4 resolve to the same ARP record. Goods post from inside the country, so no customs step applies. The peptide is independently lab-tested, and the CoA library shows which products and strengths currently have a published certificate. Express Post and tracked standard post cover every state and territory, and the weekday 12pm Sydney time cut-off will govern dispatch again once a batch lands.

### What is the cost of TB-500 in Australia?

TB-500 sells at one price per 10 mg vial, since Australian Research Peptides lists it in a single size with no ladder of strengths inside the line. That figure is held in the live stock record rather than fixed into prose. Comparing it with the two blends that also contain TB-500 is not like for like, because their price buys several peptides at once. Each line is priced on its own.

### Does a TB-500 order qualify for free shipping in Australia?

Free Standard tracked post needs two TB-500 vials; one falls short. A third takes the order past the separate Express Post waiver, which sits higher again. TB-500 is frequently ordered beside BPC-157, and that pairing reaches the standard threshold without a second TB-500 vial at all. Australian Research Peptides sets both waivers as order totals rather than per-product rules, so everything in the same order counts toward them.

### How do I get TB-500 online?

TB-500 is sold direct by Australian Research Peptides, which supplies from within Australia and posts nationally rather than drop-shipping from overseas. Two payment routes exist, PayID or a direct bank transfer, and both are matched to the order by its reference — wallets, instalment accounts and crypto are not accepted.

### How long does TB-500 take to arrive in Australia?

Expect TB-500 in 2–5 business days on standard tracked post, and in 1–2 on Express Post to most of the country. If nobody is home when the parcel arrives, the carrier's usual action is a card and a nearby collection point rather than a return to sender, though signature on delivery — opt-in, never pre-ticked — changes what happens at the door.

### Is a TB-500 vial dissolved all at once?

A 10 mg TB-500 vial is normally taken into solution in one step, and the volume added sets the concentration rather than the amount of peptide. Small volumes of the finished solution are measured with the laboratory's own equipment, and dividing it into portions avoids repeated freezing and thawing.

### Is TB-500 FDA approved?

TB-500 has never been approved as a medicine, by American regulators or by any other. The published record on the fragment stops at cell culture and animal models, which sits a long way short of a licence. Work on full-length thymosin beta-4 is a separate programme on a larger molecule, and its standing does not transfer across.

### Is TB-500 banned in sport?

TB-500 and thymosin beta-4 appear under growth factors on the World Anti-Doping Agency's prohibited list ([Sport Integrity Australia](https://www.sportintegrity.gov.au/what-we-do/anti-doping/substance-education/thymosin-beta-4)). Athletes should also know that the presence of a substance is what triggers a finding, not the intent behind it, and that a supplier describing something as a research chemical has no bearing on an anti-doping rule.

### Can you legally import TB-500 into Australia?

TB-500 is not an approved medicine anywhere in the world, so no overseas licensed product exists to bring in, and personal importation of unapproved goods is governed by the TGA with Border Force enforcing at the frontier. It is separately prohibited in sport at all times. Australian Research Peptides supplies TB-500 from Sydney, so an order is never presented at customs and waits on no clearance — the reason domestic stock reaches a bench faster than an imported one. That removes a customs step and nothing else: the substance is the same substance, and the obligations of whoever holds it are the same obligations.

### Is TB-500 tested before it is supplied in Australia?

TB-500 reaches Australian Research Peptides' shelves only after a laboratory independent of both ARP and the manufacturer has tested it at the manufacturer's request. Identity work has to account for the acetyl cap because that group adds weight and an uncapped seven-amino-acid chain lands lower on the scale. Any exact-strength batch document describes the material tested rather than a catalogue specification. No matching certificate is currently published for this product and strength.

### What does the analytical testing on TB-500 actually establish?

Testing settles the confusion that follows TB-500 around. Mass spectrometry weighs what is in the vial, and seven amino acids weigh nowhere near a 43-amino-acid protein, so the scale tells them apart. That is how independent lab testing establishes which molecule is in the vial.

### Is TB-500 the same as thymosin beta-4?

No, TB-500 is a fragment of thymosin beta-4, and that is the most common mix-up on this compound. The parent is a human protein 43 amino acids long, annotated in UniProt as binding and holding back free actin. TB-500 copies just seven of those amino acids, positions 17 to 23, with an acetyl group added at one end. Suppliers frequently list the two names interchangeably, which is where the confusion starts, so papers written about the parent should not be read as papers about this fragment.

### Is it better to buy TB-500 on its own or blended with BPC-157?

A separate TB-500 vial keeps the two peptides in separate glass, so each is weighed and reconstituted on its own and each carries its own batch record. The blended BPC-157 + TB-500 vial fixes the ratio of the two and replaces two vials with one, which is cheaper and simpler. Australian Research Peptides lists both, and the choice is control against convenience.

### Are TB-500 and BPC-157 studied together?

TB-500 and BPC-157 are frequently discussed together because both sit in cell-signalling research, and one published study has tested the pairing directly: a 2026 rat Achilles-tendon experiment comparing each peptide against the two combined, which found the combination gave no added effect over either on its own. Australian Research Peptides lists them as separate compounds and also as one pre-combined blend vial, and neither listing implies a finding about the pairing.

### Can I buy TB-500 at Chemist Warehouse?

TB-500 is supplied by Australian Research Peptides and sold by no Australian pharmacy, Chemist Warehouse included. Thymosin beta-4 fragments hold no registration in this country, so there is no dispensable product for a pharmacist to supply and no route to order one in. ARP lists TB-500 as a 10 mg research vial for laboratory use.

## Also searched as

TB500, TB 500

## Ordering

- Standard post $12.99, free on orders over $199.00
- Express post $16.99, free on orders over $299.00
- Payment: PayID or bank transfer
- Dispatched from within Australia; orders do not cross a border

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