Peptides are short chains of amino acids — the same molecular language the body uses to signal, heal, and regulate itself. The first one ever used as a medicine, insulin, was purified in a Toronto basement in 1921. A hundred years later, peptide research touches metabolism, longevity, recovery, and neuroscience. Likwid Labs exists because the science deserves a vendor layer that's just as rigorous.
Emil Fischer and Franz Hofmeister independently propose that proteins are chains of amino acids linked by what Fischer names the peptide bond. The vocabulary of modern biology begins.
Banting, Best, Macleod, and Collip isolate insulin from canine pancreas at the University of Toronto. A 14-year-old patient becomes the first human ever treated. The Nobel Prize follows two years later.
Frederick Sanger publishes the complete amino acid sequence of insulin — the first protein ever sequenced. It proves proteins have defined structures, opening the door to rational peptide design.
Bruce Merrifield invents SPPS, a method to build peptides one amino acid at a time on a resin bead. What once took a year now takes days. Merrifield wins the 1984 Nobel.
Genentech produces human insulin in E. coli — the first recombinant pharmaceutical. Peptides go from extraction to industrial biotechnology.
Exenatide, a synthetic version of a peptide first isolated from Gila monster venom, is approved for type 2 diabetes. The GLP-1 era begins quietly.
Long-acting incretin analogs reshape metabolic medicine. Peptide research moves from a niche corner of pharma to one of the most-watched fields in biology.
Every peptide on Likwid has a paper trail — a lab where it was first isolated, a researcher who named it, a body of literature that justifies why anyone studies it at all.
Isolated from a protective protein in human gastric juice by Predrag Sikiric's group in Zagreb. Studied for over three decades in tendon, ligament, and GI tract repair models — one of the most-cited peptides in regenerative literature.
Discovered by Dr. Loren Pickart while studying why young blood plasma extends the lifespan of liver cells in culture. The active fragment turned out to be three amino acids bound to a copper ion — now a foundational tool in dermal and matrix research.
Synthesized at the St. Petersburg Institute of Bioregulation and Gerontology by Vladimir Khavinson, derived from epithalamin extracted from the pineal gland. Decades of Russian-language literature explore its role in circadian and telomere biology.
Discovered by Pinchas Cohen's lab at USC, encoded inside mitochondrial DNA itself — the first widely studied member of a new class of mitochondrial-derived peptides. Reframed how researchers think about cellular energy signaling.
Researchers spend hours hunting through Telegram groups, Reddit threads, and unbranded vendor sites trying to figure out which supplier actually runs HPLC, who publishes a real Certificate of Analysis, and whose "99% purity" claim survives a third-party test. We thought that was a bad use of scientific time.
Every vendor publishes the same data points: testing method, COA on file, batch traceability, lead time. No vibes.
Peptide pages explain pathways, models, and what's actually known. We do not make medical claims and never will.
A directory is not enough. You should be able to put three vendors of BPC-157 side-by-side on purity, price, and testing in 10 seconds.
Likwid is research infrastructure. Everything on the site is for laboratory use only — that's a feature, not a footer.
See the peptides researchers are actually sourcing, or reach out about vendor onboarding and institutional access.
