Blog › Reparación

Sourcing TB-500 in Bulk: A Wholesale & White-Label Guide for EU Resellers

For distributors and white-label brands building a research-peptide catalogue, TB-500 (Thymosin Beta-4 acetate) is one of the most consistently requested references. This guide is written for B2B resellers evaluating how to source it in bulk inside the EU. It is not consumer advice: TB-500 is a laboratory research reagent, supplied strictly for research use only (RUO) and not for human or animal consumption.

Why EU stock changes the math

The single biggest friction point in wholesale research peptides is logistics. Ordering from outside the customs union means unpredictable clearance times, brokerage fees and the risk of seized or delayed shipments. Peptworks holds TB-500 in stock already inside the EU, so orders move intra-community and typically arrive in 3-5 business days with no customs step. For a reseller, that translates into predictable lead times you can actually promise your own customers, and inventory you can replenish without border risk.

Bulk vials or white-label: two ways to buy

Peptworks offers TB-500 (5 mg lyophilized vials) in two formats. The first is bulk unbranded vials — the efficient route if you relabel in-house or supply other laboratories. The second is white-label: vials labelled with your own brand and boxed, ready to resell under your identity. White-label carries a one-time EUR 180 label setup fee for orders under 100 units; from 100 units the setup is free. Either way, the minimum order is 10 units (one box) per reference, and vials ship in boxes of 10.

How the pricing tiers work

Per-vial pricing is public and driven by your combined order volume across references — a single tier applied to the whole order, not stacked discounts. For TB-500 (5 mg):

• 100 units: EUR 18.00/vial (base)
• 300 units: EUR 14.76/vial (-18%)
• 500 units: EUR 13.50/vial (-25%)
• 1000 units: EUR 12.24/vial (-32%)

Because the tier is set by combined total units, a reseller stocking several references can reach a better per-vial price on TB-500 by consolidating a single larger order rather than splitting purchases. Payment is by USDC bank transfer or invoice; there is no card checkout on site.

Traceability your customers can verify

Margin is easy; trust is harder. Every batch of TB-500 ships with an independent Certificate of Analysis covering HPLC purity (>=98%) and heavy metals. Each box carries a unique QR code linking directly to that batch's CoA, verified through Peptworks. That means your downstream customers can confirm authenticity per batch themselves — a meaningful differentiator when you are competing on quality rather than only on price. For a white-label brand, batch-level traceability is often the argument that closes the sale.

A practical sourcing checklist

Before committing to a supplier for bulk TB-500 in the EU, confirm: stock is genuinely inside the EU (not drop-shipped through customs); purity is backed by a per-batch, independent CoA rather than a generic spec sheet; minimum order and box quantities fit your cash-flow; and the pricing tiers are transparent and combinable. Peptworks is built around exactly these B2B requirements, with the full site available in ten languages so your procurement team can work in its own.

The bottom line

For EU resellers, TB-500 is a high-demand reference where sourcing quality and logistics matter as much as unit price. Buying from EU-held stock, with the choice of bulk or white-label, transparent combined-volume pricing and verifiable per-batch CoAs, lets you build a catalogue you can stand behind. Remember throughout that this is a research reagent for laboratory use only — your compliance messaging to customers should reflect that at every step.