Most Ordered Research Peptides at Index Peptides in 2026
This page records which research peptides have been ordered most often from the Index Peptides catalogue so far in 2026, and what documentation is available for each. It is a catalogue-demand record, not a statement about any compound's properties: every material listed is supplied for laboratory research use only, and each entry below is described purely in terms of its reference data and its batch documentation.
Research use only. Not for human or animal consumption. This page records ordering patterns and documentation availability. It does not describe any use, effect, or outcome of any compound.
How this list was selected
The ranking comes from Index Peptides' own order records for the current catalogue year. It reflects demand within this catalogue only; it is not a market-wide estimate and says nothing about any other supplier. Compounds under hold or exclusion are not listed, whatever their search volume, because they are not part of the active research catalogue.
BPC-157
BPC-157 is the most ordered compound in the catalogue this year. It is a 15-residue synthetic peptide, supplied as a lyophilised powder. Each listed batch carries a certificate of analysis recording HPLC purity against a stated method and LC-MS identity confirmation against the expected molecular weight, tied to a printed lot number. Reference data and documentation notes are on the BPC-157 compound page.
TB-500
TB-500 is the second most ordered. It is a larger acetylated peptide fragment, also supplied lyophilised, and its identity confirmation records a correspondingly higher expected mass than smaller peptides. Batch certificates record HPLC purity, LC-MS identity, lot number, and report date. See the TB-500 compound page.
GHK-Cu
GHK-Cu — the copper complex of the glycyl-histidyl-lysine tripeptide — is the third most ordered. Because it is a metal complex, its documentation records the peptide identity alongside the copper association, and its appearance is characteristically blue in lyophilised form. Batch-level HPLC purity and mass identity are recorded per lot. See the GHK-Cu compound page.
PT-141
PT-141 is the fourth most ordered compound in the catalogue. It is a cyclic heptapeptide supplied as a lyophilised powder, with each batch documented by HPLC purity against a stated method and LC-MS identity confirmation tied to the lot number on the vial. Reference data is on the PT-141 compound page.
NAD+
NAD+ (nicotinamide adenine dinucleotide) rounds out the five most ordered. Strictly a coenzyme rather than a peptide, it is catalogued alongside the peptide range and documented the same way: per-batch certificates recording purity and identity against named methods, matched to lot numbers. See the NAD+ compound page.
The documentation behind each listing
Ordering volume is only half the record. Every compound above passes the same listing gate before it appears in the catalogue:
- A batch-specific COA for the exact lot being sold — never a generic certificate.
- HPLC purity reported against a stated method, as an area-percent figure.
- LC-MS identity confirmation, recording measured mass against expected molecular weight.
- A lot number printed on the vial label and matched character-for-character on the certificate.
- A stated storage condition and physical form, consistent between listing, label, and certificate.
What each of those fields records is set out in what is a coa peptide, and the listing gate itself is described in how index peptides lists a product.
FAQ
How was this most-ordered list compiled?
From Index Peptides' own order records for the current catalogue year. It reflects demand within this catalogue only, not the wider market, and compounds under hold or exclusion are not listed regardless of demand.
Does an entry on this list say anything about what a compound does?
No. The list records ordering volume and documentation availability only. Every compound is supplied for laboratory research use only, and no entry describes any use, effect, or outcome.
What documentation comes with each of these compounds?
Each listed batch carries a batch-specific certificate of analysis recording HPLC purity against a stated method, LC-MS identity confirmation against the expected molecular weight, a lot number matched to the vial label, and a stated storage condition.
Why is NAD+ listed alongside peptides?
NAD+ is a coenzyme rather than a peptide, but it is catalogued within the same research range and documented under the same per-batch certificate standard, so its ordering volume is recorded in the same list.
Where do I find the certificate for the batch I receive?
Request the batch COA by lot number, or use the verification route at /verify. The lot number printed on the vial label matches the lot number on the certificate, so the document can be tied to the physical item.
Research use only. Not for human or animal consumption.