Testagen

Compound Overview

Research Use Only. Not for Human Consumption.

Testagen is supplied by Nexus as a sequence-defined short peptide bioregulator for controlled in-vitro research and analytical workflows. The sourced chemistry record identifies Testagen as Lys-Glu-Asp-Gly, abbreviated KEDG, a 4-residue synthetic peptide associated with gonadal and endocrine research models.

Testagen is categorized in the Nexus catalog under Russian Bioregulators. The current Nexus variant is a 20mg research-size vial under SKU TG20. The available source record supports its peptide sequence, classification, molecular formula, calculated molecular weight, physical form, intended use, and storage guidance. It does not provide a confirmed CAS number, lot-specific purity value, salt or counter-ion assignment, batch number, or Certificate of Analysis values.

Because the supplied source data is limited, this description is intentionally constrained. It does not infer therapeutic properties, dosing information, biological outcomes, mechanism-specific findings, reconstitution protocols, or compound-specific stability windows beyond the facts included in the research record.

• Product: Testagen
• SKU: TG20
• Available Research Size: 20mg
• Class: Khavinson short peptide bioregulator
• Sequence: KEDG
• Sequence Display: Lys-Glu-Asp-Gly
• Physical Form: Lyophilized powder
• Use: For in-vitro research use only. Not for human consumption.

Research Background & Published Literature

The available literature for Testagen is concentrated in Russian and Eastern European bioregulator research. For this product record, the strongest usable chemistry anchor is the defined amino-acid sequence: Lys-Glu-Asp-Gly. That sequence provides the basis for the calculated molecular formula and molecular weight listed in the technical specifications below.

Testagen is identified in the supplied research data as a Khavinson short peptide bioregulator associated with gonadal and endocrine research models. The provided record does not include detailed experimental abstracts, validated mechanism-specific findings, in-vitro assay conditions, study endpoints, or lot-level release analytics. For that reason, this page avoids unsupported statements about biological effects and uses the KEDG sequence, classification, physical form, and computed chemistry values as the primary verified descriptors.

The source entries included in the research record should be read as limited technical references rather than a complete product monograph. The Khavinson peptide bioregulator sequence table is used as the sequence-oriented literature anchor, the Bachem peptide molecular-weight calculation reference supports the treatment of peptide mass as a sequence-derived value, and the Testagen identifiers reference provides an additional public identifier source. None of the provided sources supply a confirmed CAS number, purity percentage, salt form, counter-ion, or lot-specific analytical result for the Nexus catalog item.

Researchers reviewing the literature around this compound can use the peer-reviewed resources below for additional context on mechanism of action, signaling pathways, and controlled laboratory research applications:

• Fedoreyeva et al. (2011) — Biochemistry (Mosc)
• Dobriţescu et al. (2025) — Molecules

Storage, Handling & Stability Guidelines

Store lyophilized Testagen material at -20°C, desiccated, and protected from light. These are the only Testagen-specific storage parameters included in the current research record.

Use the applicable lot/source record for storage of unopened material. Any diluent selection, preparation, temperature, aliquoting, or post-reconstitution hold conditions must be established by a qualified laboratory under a validated SOP; this page does not establish a stability window.

Laboratories should document handling conditions according to their own validated internal procedures and preserve traceability between aliquots, source vial, and lot-level verification records. The absence of a provided stability study means this description should be treated as a conservative storage summary rather than a complete stability protocol.

Quality Assurance & Lab Verification

The Certificate of Analysis for this catalog item is pending. No provisional batch, assay, method, analyst, or release data is published in this product dossier. Check the Lab Verified archive for documentation status.