Verdict: A tie on evidence — both earn 10/10. What separates them is review base (5.0 (549 reviews) vs 4.7 (99 reviews)) and price (0 rows cheaper at Chameleon Peptides, 0 at Purgo).
Disclosure: Purgo Labs is our affiliate partner; we earn nothing from Chameleon Peptides. Scores come from the public rubric, which has no partnership input.
Ceased operations 27 September 2026. Customer email that evening: Chameleon said it had "decided to end operations" after its underwriting banks received notices from Visa questioning whether sales reached only research customers; the storefront now reads "Permanent closure" with existing-order support at support@chameleonpeptides.com (both read 27 Sep 2026). Scored 10/10 at the time; removed from every live ranking the same day. UPDATE 2 Oct 2026: a farewell email went to customers on the evening of 1 Oct ("As we close Chameleon Peptides … the website will remain accessible to customers with existing accounts"). The storefront is reachable again for account holders, selling remaining inventory at a site-wide 50% reduction with Bitcoin and Zelle as the only payment methods — no card rail, no new accounts. We treat this as the wind-down it says it is, not a reopening: it stays off every ranking.
If you have an open order: keep the order confirmation and card statement, contact the vendor's stated support address first, and if there is no reply within the card network's dispute window, file a chargeback with your bank — a closed merchant's payment processor still has to answer disputes. Do not buy from any site claiming to be Chameleon Peptides "relaunched" or clearing "remaining stock"; successor scams follow every closure in this category.
Where to buy instead: the table below lists every compound Chameleon Peptides sold with the top-ranked active vendor for each, on the same rubric.
Chameleon Peptides scored 10/10 on our rubric at closure; that record stays below, dated, because it was real — but it is no longer a place you can buy. It has been removed from the scoreboard, the price index and every compound ranking. Other closures: vendor closures tracker.
Research use only. Compound Review scores vendors on documentation — laboratory certificates, lot records, pricing and company identity. Nothing on this page is guidance on human or veterinary use, dosing or health outcomes.
No criterion, price row or review measure where Purgo Labs leads.
No compound-and-size pair with dated prices from both vendors yet. Each vendor's readings are on the price index.
The batch ledger is the model for the industry: every batch, a lab reference, checkable at the lab. Not an affiliate partner — we earn nothing from this vendor, and it ranks where the rubric puts it.
Origin Sourcing Group LLC dba Chameleon Peptides · 1731 Howe Ave #301, Sacramento, CA 95825 — Contact page (24 Sep 2026)
One vial measured — over-fill beyond 115% is flagged, not rewarded.
Smaller independent review base than several competitors (80 reviews). The catalog is peptide-focused, so researchers also working with SARMs or broader research chemicals will need a second supplier.
Catalog includes hormone-class products (HCG, HGH 191AA, HMG) alongside peptides, a regulatory-sensitive class. Not an affiliate partner — we earn nothing from this vendor, and it ranks where the rubric puts it.
We earn nothing from Chameleon Peptides. Purgo Labs holds every rubric point — certificates checkable at the lab, measured net content per lot — with a live, independent review record.
Affiliate links, disclosed. Purgo Labs is our primary partner; we earn nothing from Chameleon Peptides. Partnership is not a rubric input.
A tie on evidence — both earn 10/10. What separates them is review base (5.0 (549 reviews) vs 4.7 (99 reviews)) and price (0 rows cheaper at Chameleon Peptides, 0 at Purgo). Every point is a fact you can check on either vendor's site; both are scored by the same published rubric.
Chameleon Peptides scores 10/10 on our rubric, has an independently viewable rating of 5.0 (549 reviews), and names its lab (Janoshik Analytical · Vanguard). Caveat: Catalog includes hormone-class products (HCG, HGH 191AA, HMG) alongside peptides, a regulatory-sensitive class. Not an affiliate partner — we earn nothing from this vendor, and it ranks where the rubric puts it.
We do not yet have a like-for-like price pair for these two vendors; the Peptide Price Index has each vendor's dated readings.
Purgo Labs is our affiliate partner and we earn a commission on referred orders; we earn nothing from Chameleon Peptides. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.