Peptide

Reference library

Educational peptide reference — research use only.

Research & educational use only

For laboratory and educational research only. Not for human or veterinary consumption. This is not medical advice. Always follow applicable laws and consult qualified professionals.

The calculator performs unit math for research reference. It must not be used to plan or guide dosing in humans or animals. Verify all figures independently in your lab protocol.

MetabolicPeptideGH secretagogue cluster

PEG MGF

A pegylated IGF-1 splice variant studied in muscle-repair research.

Half-life (approx.): ~hours (approx., pegylation extended)
Diluent: Bacteriostatic water (0.9% benzyl alcohol)
Common vials: 2 mg

Half-life figures are literature approximations for educational reference — not pharmacokinetic advice.

Overview

PEG-MGF is a pegylated splice variant of IGF-1 (mechano growth factor) studied for localized muscle-repair signaling after mechanical load. Pegylation extends half-life compared to native MGF in tissue-repair research models. Pegylated mechano growth factor for local muscle repair at mechanical injury sites.

Structure & identity

PEGylated IGF-1 Ec (mechano growth factor splice variant)

Sequence / structure: PEGylated IGF-1 Ec (mechano growth factor splice variant)

Mechanism

Pegylated mechano growth factor splice variant activates local IGF-1R in damaged muscle. IGF-1 Ec splice variant targets damaged muscle fiber niches in load-injury models.

Studies & clinical programs

Mechanical load muscle injury
Published research models
- Peer-reviewed literature documents endpoints under Mechanical load muscle injury experimental designs.
Satellite cell activation
Published research models
- Peer-reviewed literature documents endpoints under Satellite cell activation experimental designs.

Research models in literature

Mechanical load muscle injury
Satellite cell activation

Literature highlights

Pegylated mechano growth factor splice variant activates local IGF-1R at injury sites.
Satellite cell activation studied after mechanical muscle load and crush injury.
Pegylation extends half-life versus unmodified MGF in muscle-repair models.

Combination research notes

Muscle repair research pairs PEG-MGF with TB-500 and IGF-1 LR3 in published literature.

Key targets & pathways

IGF-1 receptorMuscle repairSatellite cell activationMechano growth factor

Research areas

Mechano growth factorMuscle repairPegylation

Routes in research literature

Subcutaneous

Also known as

Pegylated Mechano Growth Factor

Stability & storage phases

Phase	Condition	Guidance
Lyophilized	Sealed vial, refrigerated (2–8 °C)	Intact lyophilized cake or powder is typically stable for months to years per published stability data; protect from moisture, light, and repeated freeze-thaw of the dry vial.
Reconstituted	Bacteriostatic water (0.9% benzyl alcohol), refrigerated	Most aqueous peptide solutions remain usable for approximately 2–4 weeks refrigerated; verify published stability data and label with reconstitution date.
Working aliquots	Pre-drawn syringes or microtubes, frozen (−20 °C)	Aliquot promptly after mixing to limit freeze-thaw cycles on the main vial; thaw once and use to reduce protease-mediated degradation.

Stability windows are formulation-dependent — verify published data and your lab SOP.

Reconstitution reference table

Vial (mg)	Diluent (mL)	mcg/mL	Units @ 100 mcg	Units @ 250 mcg	Units @ 500 mcg
2	2	1000.0	10	25	50

U-100 insulin syringe scale (100 units = 1 mL). Illustrative only — not dosing guidance.

Reconstitution steps

Allow vial to reach room temperature (15–30 min)
Swab rubber stopper with alcohol prep pad
Draw calculated bacteriostatic water into syringe
Inject diluent slowly down vial wall — do not spray directly onto cake
Gently swirl until fully dissolved — do not shake vigorously
Label with date, concentration, and diluent volume
Refrigerate and use within your lab stability window

Typically reconstituted with 1–2 mL bacteriostatic water.

Laboratory record checklist

Compound identity recorded in lab notebook (name, lot, preparation date)
Analytical identity cross-checked against published sequence or structure
Potency or concentration documented from analytical certificate when available
Purity or HPLC data filed when provided with research material
Appearance noted: intact lyophilized cake or uniform powder
Sterility / endotoxin report archived when available
Storage temperature applied immediately per published stability guidance