Testagen (KEDG Tetrapeptide Bioregulator)
Basic Chemical Specifications
- Amino Acid Sequence: Lys-Glu-Asp-Gly (KEDG)
- Molecular Formula: C₁₇H₂₉N₅O₉
- Molecular Weight: 447.44 Da
- Appearance: White lyophilized crystalline powder
- Standard Pack: 10mg / 20mg / 50mg per sterile glass vial
- HPLC Purity: ≥99% research grade
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Product Introduction & Core Mechanism
Testagen is an organ-specific synthetic tetrapeptide bioregulator developed by Professor Vladimir Khavinson’s research team at the St. Petersburg Institute of Bioregulation and Gerontology, serving as the core active fragment of testicular polypeptide complex Testoluten. Distinct from conventional receptor-binding peptides, this ultra-short sequence penetrates cell and nuclear membranes directly to bind DNA and histone proteins, exerting epigenetic regulation on reproductive and endocrine gene expression without suppressing endogenous hormone secretion.
Core research mechanisms:
- Activate steroidogenic genes in testicular Leydig cells
Upregulate key testosterone synthesis enzymes including StAR, CYP11A1 and 3β-HSD, restore the natural testosterone production pathway of aging testicular tissue, widely applied in androgen balance and male reproductive aging research. - Regulate Hypothalamic-Pituitary-Gonadal (HPG) axis
Improve pituitary sensitivity to gonadotropin signals, normalize LH/FSH feedback loop, balance the whole reproductive endocrine system without the hormonal shutdown side effects caused by exogenous testosterone supplementation. - Thyroid endocrine homeostasis
Modulate pituitary-thyroid signaling pathways, stabilize thyroid hormone secretion and relieve age-related thyroid function decline in preclinical models. - Anti-senescence & tissue protection
Slow testicular cell senescence, reduce oxidative inflammatory damage to reproductive tissue, support long-term gonadal function maintenance in gerontology research. - Optimize reproductive microenvironment
Regulate local immune factors in testicular tissue, alleviate chronic low-grade inflammation that impairs hormone synthesis and gamete production.
Our Testagen Product Competitive Advantages
- Ultra-high purity ≥99%
Each batch passes HPLC and LC-MS mass spectrum identification. Complete COA, HPLC chromatogram, heavy metal and low-endotoxin test reports (third-party lab verification available) are provided for all bulk orders; no degraded peptide fragments or impurity residues. - Vacuum freeze-drying technology
Full moisture removed without preservatives, fully locks complete peptide biological activity. Lyophilized solid form avoids hydrolysis and oxidation during long-distance air & sea cross-border shipping, stable potency with a 24-month shelf life. - GMP clean-room sterile production
Independent single sealed vial packaging to avoid cross-contamination. Custom private labels, bottle sizes and bulk packing service available for global resellers and lab suppliers. - Excellent water solubility
Rapidly dissolves in sterile bacteriostatic water to form clear transparent solution without sediment, convenient for precise laboratory dosage preparation for in vivo and in vitro trials. - Complete professional technical support
We supply detailed reconstitution guide, storage specification, laboratory dosage reference and full batch traceability documents for all distributors.
Storage & Reconstitution Instructions
- Unopened lyophilized powder: Long-term storage at -20°C away from light and humidity, shelf life up to 24 months; short transit storage at 2–8°C is acceptable.
- Recommended solvent: Sterile bacteriostatic water
- Operation tip: Slowly inject solvent along the inner vial wall and swirl gently; violent shaking will cause peptide aggregation and activity loss.
- Reconstituted liquid: Seal tightly and refrigerate at 2–8°C, finish all usage within 14 days; avoid repeated freeze-thaw cycles.
Global Wholesale Cooperation Support
- Flexible minimum order quantity & tiered large-volume discount for stable VIP long-term partners
- Low-risk dedicated shipping lines for USA, EU, Brazil, Australia with reduced customs detention probability
- Exclusive one-on-one VIP account manager, fast working-hour response and professional reshipping solutions for logistics issues
Testagen (KEDG) Lyophilized Tetrapeptide | 99% High Purity Testicular Bioregulator
Khavinson-series ultra-short epigenetic peptide targeting testicular endocrine function.
Core research directions: boost natural testosterone synthesis, balance HPG axis hormones, protect gonadal tissue, relieve reproductive senescence and stabilize thyroid endocrine activity. No suppression of endogenous hormone production.
✅ Purity ≥99% verified by HPLC & mass spectrometry
✅ Available specs: 10mg / 20mg / 50mg per sterile vial
✅ Full set of official COA test documents attached for every batch
✅ Freeze-dried stable form suitable for worldwide cross-border delivery
✅ Clear solution after reconstitution, simple lab operation
✅ Custom packaging & competitive bulk wholesale pricing
Anhui Ruibang Trading Co., Ltd. was established with a clear mission: to simplify international trade for businesses of all sizes. We act as a bridge between manufacturers and global buyers, offering professional sourcing, quality inspection, order coordination, and logistics management.
Our team brings years of experience in cross-border trade, supplier networks, and export documentation. We understand the challenges of international business — language barriers, quality control, shipping complexities — and we solve them with a client-first approach.
At Ruibang Trading, we don’t just move goods; we build relationships. Whether you are looking for a reliable supplier, need help consolidating shipments, or want to expand your product line, we provide tailored solutions to meet your goals.
Our Commitment: Integrity, efficiency, and transparency in every transaction.
Our products are of reliable quality and sell well all over the world, with partners across many countries and regions. We have professional technical support and complete after-sales teams to promptly respond to all your inquiries and demands.
We always strictly control product quality, adhere to honest business principles, and prioritize quality and service. With stable product strength and thoughtful services, we sincerely welcome global customers to negotiate cooperation and achieve win-win development together.
We have been deeply engaged in the peptide industry for many years, serving as a source biotechnology factory integrating R&D, synthesis, production and sales.
We strictly follow production and quality control standards, with the whole process adopting aseptic production and independent lyophilization and packaging. Our products feature stable appearance, good solubility and high activity retention.
We support trial orders with small quantities, bulk orders and customized formulas, providing one-stop solutions for foreign trade supply and private customization needs.
Glu-Asp-Gly is an oligopeptide.
TDS
United Kingdom
