Research-peptide vendor closures in 2026: a dated list of what each notice said and what customers were told

Published November 6, 2026. This is a dated list of U.S.-facing research-peptide vendors that closed or stopped taking orders in 2026, with what each vendor's own notice said where it could be found, and what customers were told. Every row cites a page opened while writing; where only a secondary observer recorded a notice, the row says so. It is a record, not a ranking, and it carries no recommendation of any vendor, open or closed.

Peptide vendors that shut down in 2026: the dated list#

Six closures could be dated and sourced. Dates marked "as reported" come from a third-party observer rather than a vendor page we could open ourselves.

One candidate is not listed. Chemyo has been described elsewhere as closing in 2026, but we could not open a vendor notice or a dated report that confirms it, so it is left out until we can. Closures from 2025 are outside this list's scope; our vendor-closure guide covers the longer period.

Notes on each closure#

Science.bio (January 2026)#

Science.bio's 2026 closure is the least documented on this list. The Peptide Catalog dates the announcement to January 27, 2026 and says outstanding orders would be fulfilled or refunded, but cites no source.^[3] Peptide Protocol Wiki states only that operations ceased in January 2026.^[2] Pepsite adds history: a permanent closure in February 2022, a reopening in May 2023, and a final shutdown that "appears" to have happened by January 2026.^[4] Pepsite also warns that a site using the name may be impersonating the vendor. Because we could not open the vendor's own notice, the date is marked as reported.

Peptide Sciences (March 6, 2026)#

The best documented of the six. The Peptide List reported the notice in a red-bordered box on an otherwise blank page at about 2:00 p.m. Eastern on March 6, 2026, and quoted it.^[1] Peptide Protocol Wiki, three days later, noted that the notice gave no timeline for outstanding orders and nothing about customer accounts or inventory.^[2] The notice has since been reworded; our separate page records the current text and the date we read it.

Strate Labs and Eternal Peptides (July and September 2026)#

Both rows rest on one observer, The Peptide Catalog, which cites Strate Labs' own closure notice dated July 1, 2026 and quotes Eternal Peptides' wind-down message directly.^[3] Neither vendor published a reason that we could find. Treat both dates as reported until a vendor page confirms them.

Chameleon Peptides (September 27, 2026)#

Two independent observers agree on the September 27 date.^[5][6] The storefront text and the sentence about signing in for order history and laboratory reports were retrieved by The Peptide Catalog on October 6, 2026.^[5] The attestation line is third-hand: a customer email, documented by CompoundReview, then quoted by The Peptide Catalog. We could not open either the email or CompoundReview's page, so it is reported here only as attributed.

Soma Chems (October 2026)#

We observed the Soma Chems notice ourselves on October 13, 2026 and recorded it, with the close-out banner that preceded it, on our Soma Chems page. On November 6 we could not reopen the storefront from this desk, so the external source cited here is the October 28 press release from a separate company that describes the same notice.^[7] Finnrick's vendor profile for Soma Chems shows no published tests, so there is no public outside record for its lots.^[11]

What the 2026 closure notices said, and what they left out#

Read side by side, the notices are short. Peptide Sciences called its decision voluntary and gave no reason.^[1] Science.bio, as reported, also used the words "careful consideration."^[3] Eternal Peptides thanked customers and set a support end date.^[3] Chameleon Peptides is the only one of the six for which a reason has been reported, and that reason comes from a customer email documented by a third party rather than from a public notice.^[5] Soma Chems' notice gave no reason and no date.^[7]

What customers were told about open orders varied more. Of the six, only Science.bio (as reported) addressed open orders directly, saying they would be fulfilled or refunded.^[3] Chameleon Peptides kept account sign-in available for order history and laboratory reports and listed a support address.^[5] Peptide Sciences' notice, as first reported, said nothing about orders, accounts or inventory.^[2] Soma Chems pointed customers to an account page and a contact form, as recorded on our Soma Chems page.

Successor and lookalike claims after a closure#

After each closure, new sites using the closed vendor's name followed. Peptide Sciences' current notice states that it has authorized no successor; our page on that notice records the wording. In the Soma Chems case, a company calling itself Soma Chems US issued a paid press release on October 28, 2026 saying it "does not represent itself as a relocation or continuation of the original business," and a second release on November 3 announced online ordering at its own domain without stating any connection to the original store.^[7][8] We report those as the issuer's statements and have not verified any relationship. The rule we apply is the one Peptide Sciences' own notice implies: a successor claim is unverified until the closed vendor's own domain confirms it.

Why 2026 had more closures#

No vendor on this list published a full reason, so this page does not assign one. The regulatory events of the year (FDA's category changes, the July advisory votes, the August warning letters and the October 28 HHS compounding policy) are recorded with dates in our 2027 timeline and our October 2026 news roundup. One point from October bears on research suppliers specifically: BakerHostetler's summary of the HHS policy states that it does not apply "to products sold as research chemicals or dietary supplements."^[9] The policy covers licensed compounders, not research vendors.

What to check after a vendor closes#

The fuller checklist, with ten checks and the red flags that tend to follow a closure, is in our guide to choosing a research-peptide vendor after a closure. In short:

1. Deal with the closed vendor first. Use only the contact route on its own domain. Keep your order confirmation, payment record and any certificate you relied on.
2. Ignore successor claims that the closed vendor has not confirmed. Check the original domain, not the new site's own account of itself.
3. Ask any new supplier for a lot-specific certificate of analysis that names the laboratory and matches the lot number on the vial. Our guide to verifying a certificate is genuine explains how to confirm one with the laboratory.
4. Check for an outside record. Public test databases such as Finnrick, which listed 12,729 tests as of October 29, 2026, let you compare a vendor's certificate with what an independent laboratory found in a purchased vial.^[10] Our page on reading a public test listing covers what one listing can and cannot show.
5. Find the legal entity and address in the footer, terms or privacy policy, and read the refund policy before ordering.
6. Prefer a payment method with dispute rights on a first order.

Run the same checks on Renuvia Labs. Our lots are tested by Freedom Diagnostics Testing for HPLC-UV purity, LC-MS identity and measured content, and each lot's report is listed in the COA library; some products carry supplier-provided certificates, labelled as such, and lots awaiting a report show as pending. We are in Dallas, Texas, have no affiliation with any vendor on this list, and honor none of their codes.

How this list is kept#

A vendor is added only when a closure or stop in orders can be dated from the vendor's own page or from a dated report we have opened. Each row quotes the notice where a quote exists and paraphrases with attribution where it does not. We do not include rumors, forum claims without a date, or reasons a vendor did not give. Pages that carry affiliate links are cited only for dated observations. If you have a dated primary source that adds or corrects a row, email support@renuviaus.com and we will update the list with the date of the change.