Research Peptides

TB4-Frag (Ac-SDKP)

TB4-Frag (Ac-SDKP) is listed in the Research Peptides catalog with 2 matched SKU/form rows: 10 / Injectable, 5 / Injectable. The lowest published tier starts at $3.06. The table is a procurement reference, not a dosing instruction. The quotation confirms the exact supplied identity, specification, allocated lot, available batch documents, handling and destination-specific delivery terms. This listing is for research procurement only.

Procurement record

Catalog identity	TB4-Frag (Ac-SDKP)
Catalog category	Research Peptides
Price-list identity	TB4-Frag (Ac-SDKP)
SKU / form rows	10 / Injectable; 5 / Injectable
Specification and purity	Confirm the offered specification, method, acceptance criterion and allocated-lot result in the quotation. No sitewide purity guarantee is made.
Documents and handling	Confirm available batch documents, storage, packaging, transit conditions and destination requirements for the exact supplied form.

Checks before approving TB4-Frag (Ac-SDKP)

Match the product name, manufacturer, sequence or analogue, salt/form and 10 / Injectable to the quotation.
Confirm the unit represented by the SKU row and keep it separate from any dosage or administration decision.
Request the allocated-lot identity method, specification, acceptance criteria and available batch results.
Confirm storage, packaging, dispatch estimate, importer obligations and destination-specific delivery terms in writing.
Compare any literature reference with the exact supplied material; a paper does not prove supplier-batch equivalence.

Price-list tiers apply when the order reaches 100+ total units. Each tier is based on the quantity of the individual SKU; smaller orders are quoted separately.

Published price-list tiers

TB4-Frag (Ac-SDKP) published price-list tiers
SKU / form	10–24 units of this SKU	25–49 units of this SKU	50+ units of this SKU
10 / Injectable	$6.80	$5.95	$5.10
5 / Injectable	$4.08	$3.57	$3.06

The labels above reproduce the current price-list entries. They are not dosage instructions. Confirm the unit, exact supplied form, allocated lot, analytical package and availability in the quote.

Request TB4-Frag (Ac-SDKP) Price List White Label Service

What to verify before ordering Ac-SDKP

Ac-SDKP is a four-residue acetylated peptide, not full-length thymosin beta-4. Procurement documents should identify the exact termini and supplied form rather than use the broader TB4 name alone.

Sequence and termini

Confirm Ac-Ser-Asp-Lys-Pro-OH, N-terminal acetylation, C-terminal state, counter-ion, molecular formula, and expected mass. Request batch-specific LC-MS identity evidence.

Purity versus content

Review the HPLC method and area purity separately from net peptide content. Water, counter-ion, residual solvents, and fill-weight tolerances can affect material balance.

Protocol requirements

Confirm storage, packaging, and reconstitution conditions. Set endotoxin or bioburden limits according to the intended model instead of assuming one generic threshold fits every experiment.

For research use only. Literature on Ac-SDKP does not describe full-length thymosin beta-4 and does not establish therapeutic efficacy for supplied material.

Evidence boundary for TB4-Frag (Ac-SDKP)

The literature below concerns Ac-SDKP in defined cell and animal models. It does not describe full-length thymosin beta-4, establish clinical efficacy or verify an independently supplied research batch.

Ac-SDKP and mesangial-cell signaling. Human mesangial-cell culture work examined Ac-SDKP in relation to TGF-beta, PAI-1 and Smad signaling. The model is cellular and does not establish a clinical effect or supplier-batch identity. DOI 10.1097/01.ASN.0000057544.95569.EC.

Cardiac and inflammatory models. A laboratory study used cultured bone-marrow stromal cells and macrophage assays alongside an angiotensin-II hypertensive mouse model to examine inflammatory and fibrosis endpoints. These preclinical models do not provide human efficacy, dosing or safety evidence. DOI 10.1152/ajpheart.00305.2007.

Rat fibrosis model. A rat study examined reduced endogenous Ac-SDKP and cardiac and renal fibrosis, including glomerulosclerosis-related endpoints. It addresses a defined animal model and does not verify a commercial preparation or an intended use. DOI 10.1161/HYPERTENSIONAHA.106.084103.

For procurement, request the exact Ac-SDKP sequence and termini, supplied form, specification, allocated-lot identity method, acceptance criteria and available batch results. These publications do not provide medical, veterinary, dosing or administration guidance.

Questions about TB4-Frag (Ac-SDKP)

What is TB4-Frag (Ac-SDKP) in this catalog?

TB4-Frag (Ac-SDKP) is a research peptides catalog listing. Confirm the exact manufacturer, composition or sequence, supplied form and allocated-lot identity in the quotation.

What price is shown for TB4-Frag (Ac-SDKP)?

The table shows the current published tiers for 2 matched SKU/form rows. The quote still confirms the allocated lot, availability, currency, destination terms and any rows that are price-on-request.

What purity is available for TB4-Frag (Ac-SDKP)?

A purity figure is meaningful only when the method, acceptance criterion and allocated-lot result are identified. The quotation confirms what documentation is available; this page makes no universal purity guarantee.

Which documents should be requested for TB4-Frag (Ac-SDKP)?

Request the product identity and supplied form, specification, method and acceptance criteria, allocated-lot results, available COA or analytical documents, storage/handling instructions and destination-specific delivery terms.

Does published research prove the supplied TB4-Frag (Ac-SDKP) batch?

No. The cited cell and animal studies concern defined research models. They do not verify the supplier, SKU, allocated lot, identity, purity, storage history or use suitability. Confirm those details in the quotation and batch documents.

Can TB4-Frag (Ac-SDKP) be used for people or animals?

This catalog is for research procurement. It does not provide medical, veterinary, dosing, administration or treatment instructions. Check the laws and institutional requirements that apply to the intended work.

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