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width:21px;height:21px;background:var(–c-forest);color:var(–c-lime);border-radius:6px; font-size:.72rem;font-weight:800;display:flex;align-items:center;justify-content:center} .stl-note{margin-top:8px;padding:16px 18px;border-left:4px solid var(–c-green);background:#f2f7f4; border-radius:0 10px 10px 0;font-size:.85rem;color:var(–c-mut)} .stl-note b{color:var(–c-logo)} .stl-pdp–nojs .stl-spec__tabs{display:none} .stl-pdp–nojs .stl-spec__panel[hidden]{display:block} .stl-pdp–nojs .stl-spec__panel + .stl-spec__panel{border-top:1px solid var(–c-line)} @media (max-width:760px){ .stl-grid4{grid-template-columns:1fr 1fr} .stl-feat,.stl-reg__grid{grid-template-columns:1fr} .stl-spec__table th{width:46%} } @media (max-width:440px){.stl-grid4{grid-template-columns:1fr}} @media (prefers-reduced-motion:reduce){.stl-pdp *{transition:none!important}} .stl-pdp{font-size:16px} .stl-pdp p,.stl-pdp li,.stl-pdp td,.stl-pdp th,.stl-pdp .stl-spec__table{font-size:16px;line-height:1.65} .stl-pdp .stl-chip span,.stl-pdp .stl-sub,.stl-pdp .stl-feat p,.stl-pdp .stl-reg__card p,.stl-pdp .stl-trust__row p,.stl-pdp .stl-refs li,.stl-pdp .stl-note,.stl-pdp .stl-copy__btn,.stl-pdp .stl-btn,.stl-pdp .stl-spec__tab{font-size:16px} .stl-pdp h3{font-size:1.4rem} .stl-pdp h2{font-size:clamp(2rem,3vw,2.5rem)} .stl-pdp .eyebrow,.stl-pdp .eyebrow–lime{font-size:14px} .stl-pdp .stl-pill{font-size:14px} .stl-pdp .stl-coa figcaption{font-size:14px} .stl-pdp .stl-refs li::before{font-size:14px} .stl-pdp .stl-spec__table sub{font-size:14px} .stl-pdp .stl-spec__table caption{font-size:18px} .stl-pdp .stl-seq{font-size:13px} Why this peptide Key highlights 2 mg lyophilized vialFreeze-dried peptide in a sterile, UV-resistant glass vial. 99.5% HPLC purityEach lot analyzed by an accredited US third-party lab via HPLC and mass spectrometry. Cold-chain peptideRefrigerate after reconstitution. Diluent and lab supplies not included. Research use onlySupplied exclusively for laboratory investigation and development. Technical data Product specifications Specifications Lab Reports Storage & Handling PEG-MGF (Pegylated Mechano Growth Factor) — 2 mg lyophilized Compound Class Synthetic Polypeptide · Pegylated E-domain peptide of mechano growth factor (an IGF-1 splice variant) Form Lyophilized powder in sterile glass vial Quantity 2 mg per vial CAS Number 108174-48-7Copy Chemical Formula C426H682N112O119S11Copy Molecular Weight 2867.2 g/mol Amino Acid Sequence PEG-Suc-Tyr-Gln-Pro-Pro-Ser-Thr-Asn-Lys-Asn-Thr-Lys-Ser-Gln-Arg-Arg-Lys-Gly-Ser-Thr-Phe-Glu-Glu-Arg-Lys-Cys Copy sequence Synonyms PEG-MGF, Pegylated Mechano Growth Factor Verified Purity Batch-tested to 99.5% (HPLC) For laboratory research use only. Not for human or animal consumption. View certificates of analysis Independently verified This peptide is analyzed by an accredited US third-party laboratory before it ships. Accredited testing partner Identity and purity confirmed by MZ Biolabs (Tucson, AZ), a US DEA-licensed analytical facility, via HPLC purity analysis and mass-spectrometry identity confirmation under GLP standards. Published certificates of analysis Our third-party certificates of analysis are published on our website — no login required. PEG-MGF99.5% pure Most recent batch certificate of analysis for PEG-MGF, issued by MZ Biolabs (Tucson, AZ). Tap to view full size. See all certificates of analysis Storage & handling Peptides are photo- and temperature-sensitive; handle per standard laboratory practice. Lyophilized storage: Keep the sealed vial cool, dry, and protected from light. For longer-term storage, freezing is standard practice for lyophilized peptides. After reconstitution: Refrigerate (approximately 2–8 °C) and follow your institution’s SOPs for aliquoting, handling, and disposal. Avoid repeated freeze–thaw cycles. Diluent not included: A suitable laboratory diluent and reconstitution supplies are not provided with this product. UV-resistant glass vial to help protect photo-labile peptides during storage. Tamper-evident seal to support chain-of-custody and inventory controls. Sourcing & quality Why source PEG-MGF from Sports Technology Labs Quality control across the research-peptide industry is inconsistent, and many suppliers do not publish third-party testing for their products. Independent verification of identity and purity is essential for reproducible research. Third-party tested & certified Verified by MZ Biolabs (Tucson, AZ), an accredited US laboratory, via HPLC and mass spectrometry, with batch-linked COAs. Lyophilized & packaged in America Freeze-dried into sterile, UV-resistant glass vials and packaged in the USA. Tamper-evident packaging Supports chain-of-custody, label transparency, and batch-linked traceability. 60-day money-back guarantee Transparent business, standard payment methods, no misrepresentation. Research context What is PEG-MGF? PEG-MGF (pegylated mechano growth factor) is a synthetic peptide corresponding to the C-terminal E-domain of mechano growth factor (MGF), a splice variant of insulin-like growth factor-1 (IGF-1, designated IGF-1Ec). It is conjugated to polyethylene glycol (PEG): a process known as PEGylation, in which water-soluble PEG chains are attached to a peptide. PEGylation increases the molecule’s stability, solubility, and circulating half-life relative to the unmodified peptide. It is used as a research chemical to investigate MGF / IGF-1 E-domain peptide biology in experimental models. PEG-MGF is an experimental research chemical, supplied strictly for laboratory research. Sports Technology Labs makes no claims regarding its effects, and nothing in this listing should be interpreted as describing outcomes in humans or animals. Regulatory & compliance status Important regulatory information Not approved for human use PEG-MGF is an investigational research peptide. It is not approved by the FDA and is not a drug, food, dietary supplement, or cosmetic. Marketing it for human use is unlawful. WADA-prohibited Insulin-like growth factor-1 (IGF-1) and its analogues, and mechano growth factors (MGFs), are prohibited by the World Anti-Doping Agency at all times under S2 (Peptide Hormones, Growth Factors, Related Substances and Mimetics) (ref. 3). Legal status for research In the United States, PEG-MGF is not a controlled substance and may be legally purchased and possessed for laboratory research use. Other jurisdictions may regulate it differently. Our position Sports Technology Labs are chemical suppliers, not medical providers. We do not condone or encourage consumer use of research compounds. Citations Scientific references Zabłocka B, Goldspink PH, Goldspink G, Górecki DC. Mechano-growth factor: an important cog or a loose screw in the repair machinery? Front Endocrinol (Lausanne). 2012;3:131. Veronese FM, Pasut G. PEGylation, successful approach to drug delivery. Drug Discov Today. 2005;10(21):1451–1458. WADA Prohibited List (2025), Section S2: Peptide Hormones, Growth Factors, Related Substances and Mimetics (Insulin-like Growth Factor-1 and analogues; Mechano Growth Factors). WADA.org. Research use only. All products on this website are intended exclusively for laboratory research and development. They are not for human or animal consumption. These statements have not been evaluated by the U.S. Food and Drug Administration, and these products are not intended to diagnose, treat, cure, or prevent any disease. {“@context”:”https://schema.org”,”@type”:”ChemicalSubstance”,”name”:”PEG-MGF (Pegylated Mechano Growth Factor)”,”alternateName”:[“PEG-MGF”,”Pegylated Mechano Growth Factor”],”identifier”:[{“@type”:”PropertyValue”,”propertyID”:”CAS”,”value”:”108174-48-7″}],”molecularFormula”:”C426H682N112O119S11″,”molecularWeight”:”2867.2 g/mol”,”description”:”PEG-MGF (pegylated mechano growth factor), 2 mg lyophilized, a synthetic pegylated peptide corresponding to the E-domain of mechano growth factor (an IGF-1 splice variant), supplied for laboratory research use only. 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