Thymosin Beta-4 Fragment Capsules

Direct Anti Peptide supplies Thymosin Beta-4 Fragment Capsules (Ac-SDKP) at ≥98% purity, manufactured to rigorous analytical standards for advanced peptide research. Each capsule delivers a precisely measured dose of the biologically active Ac-SDKP fragment derived from the full-length Thymosin Beta-4 protein. For research use only. Not for human or veterinary use. Not for clinical, diagnostic, or consumptive applications.

Product Overview

Thymosin Beta-4 Fragment Capsules — commercially designated as Ac-SDKP — represent a compelling area of investigation within regenerative biology, cardiovascular research, and inflammatory pathway modulation. The Ac-SDKP tetrapeptide (N-acetyl-seryl-aspartyl-lysyl-proline) is a naturally occurring fragment of the full Thymosin Beta-4 (TB-4) protein and has attracted considerable scientific interest for its role in cellular homeostasis, angiogenic signalling, and tissue-level repair mechanisms. Direct Anti Peptide offers these capsules as a convenient, standardised oral-format research reagent for qualified laboratory professionals seeking a non-injectable delivery matrix for TB-4 fragment studies.

Peptide Structure & Amino Acid Sequence

The active constituent of these capsules is Ac-SDKP, a tetrapeptide with the sequence N-Acetyl-Ser-Asp-Lys-Pro. This short-chain fragment is cleaved endogenously from the N-terminal region of Thymosin Beta-4 and retains distinct biological activity independent of the parent protein. Its compact structure contributes to relative stability compared to larger peptide chains, while its acetylated N-terminus confers resistance to certain proteolytic enzymes — a property of particular interest to researchers studying oral peptide bioavailability and gastrointestinal transit behaviour.

Chemical & Physical Characteristics

• Peptide Name: Thymosin Beta-4 Fragment (Ac-SDKP)
• Sequence: N-Acetyl-Ser-Asp-Lys-Pro
• Molecular Formula: C₁₈H₃₁N₅O₉
• Molecular Weight: Approximately 493.47 g/mol
• Appearance: White to off-white lyophilised powder, encapsulated
• Solubility: Soluble in aqueous buffer systems
• Format: Oral capsule with protective encapsulation matrix

Purity & Analytical Verification (HPLC & MS)

Every batch of Thymosin Beta-4 Fragment Capsules supplied by Direct Anti Peptide is verified to a minimum purity of ≥98% using reverse-phase High-Performance Liquid Chromatography (RP-HPLC). Identity confirmation is performed via Mass Spectrometry (MS), ensuring the detected molecular ion corresponds precisely to the theoretical mass of Ac-SDKP. These dual-method analytical controls eliminate ambiguity regarding peptide identity and provide researchers with the confidence required for reproducible experimental outcomes.

Quality Control & Lyophilisation Integrity

The Ac-SDKP peptide content within each capsule originates from lyophilised bulk material produced under controlled conditions. Lyophilisation (freeze-drying) removes residual moisture to levels that preserve peptide integrity during storage and transit. Each production lot undergoes quality control checks including moisture content assessment, visual inspection, and encapsulation weight uniformity testing. Capsule shells are selected for compatibility with the peptide matrix, and the overall formulation is designed to support consistent content delivery across research applications.

Safety, Handling & Laboratory Precautions

These capsules are supplied exclusively as a research reagent and must be handled in accordance with standard laboratory safety protocols. Personnel should wear appropriate personal protective equipment (PPE) including gloves, lab coat, and eye protection when handling. Capsules should not be opened, dissolved, or otherwise manipulated outside of a properly equipped research environment. Keep away from heat sources, direct sunlight, and moisture. This product is not a dietary supplement, pharmaceutical, or consumer product of any kind.

Reconstitution, Packaging & Storage

Thymosin Beta-4 Fragment Capsules are supplied in sealed, tamper-evident containers. The encapsulation format eliminates the need for solvent reconstitution in the context of in vitro oral absorption modelling. For any research protocol requiring dissolution of capsule contents, use sterile aqueous buffer appropriate to your experimental system. Store capsules at 2–8°C in a dry, dark environment. Avoid freeze-thaw cycling of opened capsules. Shelf life and expiry information is printed on each container label.

Intended Research Use & Market Positioning

Ac-SDKP is an active subject of investigation across multiple research domains including tissue repair biology, angiogenesis modelling, fibrosis inhibition studies, and cardiovascular regenerative research. The oral capsule format provides a non-injectable delivery matrix that may be useful in gastrointestinal absorption studies, pharmacokinetic modelling, and comparative bioavailability investigations. Direct Anti Peptide positions this product as a premium, analytically verified research tool for institutional and independent researchers working within regulated laboratory environments.

Ordering, Availability & Fulfillment

Direct Anti Peptide offers Thymosin Beta-4 Fragment Capsules for sale online with straightforward ordering, competitive best-price positioning, and reliable fulfillment. Orders are dispatched promptly following payment confirmation, with discreet, compliant packaging suitable for laboratory delivery addresses. Buy online today through our secure checkout and benefit from our commitment to product quality, analytical transparency, and responsive customer support for research professionals.

Legal & Regulatory Disclaimer

For research use only. Not for human or veterinary use. Not for clinical, diagnostic, or consumptive applications. Thymosin Beta-4 Fragment Capsules (Ac-SDKP) are sold exclusively as laboratory research reagents. Direct Anti Peptide makes no claims regarding therapeutic efficacy, safety for consumption, or suitability for any application outside of qualified scientific research. Purchasers are solely responsible for ensuring compliance with all applicable local, national, and international regulations governing the acquisition, storage, and use of research peptides. This product has not been evaluated or approved by any regulatory authority for use in humans or animals.