
BF-1S (20MG) Pen
A pre-formulated 3 mL research pen containing 20 mg of the GLP-1 semaglutide-class single-incretin analog, HPLC-verified to ≥99%. No reconstitution required. American-manufactured. Research use only.
A semaglutide-class incretin analog: a 31-residue GLP-1 receptor agonist peptide carrying a C18 fatty diacid side chain on a linker.
$245.003 or more: 5% off each. 5 or more: 10% off each.
Research Use Only. Not for human or veterinary use.
Documented reference chemistry.
BF-1S, a single-incretin (GLP-1 receptor) research analog of the semaglutide class, supplied by BioFusion as a sealed 3 mL research pen containing 20 mg for single-incretin receptor-pathway research chemistry.
Research context
The GLP-1 semaglutide-class analog is the single-receptor reference in the incretin research panel, the baseline against which the dual-incretin (BF-2T, tirzepatide class) and triple-incretin (BF-3R, retatrutide class) classes are compared. The pen provides it pre-formulated at 20 mg.
Formulation & documentation
Each pen is filled from lots produced by solid-phase peptide synthesis in a U.S.-based ISO 9001:2008 facility and verified for identity (LC-MS), purity (reverse-phase HPLC-UV ≥99.0%), moisture (Karl Fischer), and counter-ion (ion chromatography) before formulation. The pre-measured 3 mL research pen is filled and sealed under controlled conditions.
Storage & handling
Store the sealed pen refrigerated at 2-8 °C and protect from light; avoid freeze-thaw cycling. As a pre-formulated liquid pen it requires no reconstitution. Handle as a laboratory reference material.
Why BioFusion
Long incretin analogs are demanding to synthesize at reference-grade purity. BioFusion HPLC-verifies each lot to ≥99.0% and confirms LC-MS molecular weight against the canonical reference before filling. Bulk discounts trigger at three+ units; members save 25% on every order plus complimentary U.S. shipping for 365 days.
For research and laboratory use only. This product is not a drug, food, or cosmetic, and is not intended for diagnostic, therapeutic, or in vivo human use.
Pre-formulated, no reconstitution.
Each 3 mL pen is supplied pre-formulated, so no reconstitution is needed. Keep it capped and away from light, and store it cool until your protocol calls for it.
Once opened, keep it refrigerated and use it within your validated window.
For laboratory and Research Use Only. Not for human or veterinary use.
Related reference standards.



