A research supply company — not a wellness or supplement brand.
Fleck Enterprises LLC is a United States supplier of reference-grade peptides and analytical compounds sold exclusively as in-vitro research reagents to laboratories, academic institutions, and research organizations. We do not sell supplements, cosmetics, foods, or therapeutics, we make no health or performance claims, and we provide no dosing or usage guidance. Every lot passes independent verification before it reaches a bench.
All products sold on this site are intended for laboratory research use only. Not for human consumption, diagnostic, or therapeutic use. Not evaluated by the FDA.
Lab-grade synthesis
All compounds synthesized in cGMP-compliant facilities with strict quality protocols at every step.
Independent verification
Every batch is tested by third-party labs for purity (HPLC), identity (mass spec), and endotoxins.
Transparent COAs
A Certificate of Analysis is issued for every lot — no exceptions, no undocumented batches.
Shipping to research facilities
Cold-chain capable, plain outer packaging, fully tracked delivery to laboratories worldwide.
Purity, identity, integrity.
We accept only peptides and compounds that meet our minimum 99% purity threshold. Anything below specification is rejected and never shipped — regardless of the cost implications.
Our verification partners include accredited analytical laboratories specializing in pharmaceutical-grade quality control. Each lot receives a unique reference number traceable from synthesis through delivery.
All products are sold strictly for laboratory research purposes and are not intended for human consumption, in-vivo use, food, drug, or cosmetic applications. Nothing we publish is medical, clinical, or veterinary advice.