Science.bio, a research-compound supplier known for a broad catalog spanning peptides and related laboratory chemicals, shut down around January 2026, cutting off a sourcing channel that many independent researchers and labs had relied on for recurring orders. Anyone now looking for a Science.bio alternative does not need to search for a similarly branded store; the faster path to a reliable replacement is applying the documentation standard that should be used for any supplier, namely a current, batch-specific third-party Certificate of Analysis, dual HPLC and mass-spectrometry verification, domestic United States shipping, and a catalog that discloses real specifications instead of marketing language. Ascension Labs carries overlapping categories of research peptides under that standard.
The Science.bio Shutdown, Briefly
Science.bio ceased operations in early 2026, part of a broader pattern of research-compound suppliers exiting the market across the 2025 to 2026 period. As with any vendor closure, the immediate practical issue for researchers is not the loss of a specific brand but the loss of a documented, verified supply chain for compounds already built into active protocols. Labs that had standing orders, preferred lot numbers, or supplier-specific documentation on file should treat the shutdown as a prompt to formally requalify a new source, rather than making an ad hoc purchase from the first search result that appears.
Requalifying a Supplier: A Four-Point Standard
Requalifying a supplier after a shutdown resembles onboarding any new reagent vendor in a lab setting, and it comes down to four checks. First, confirm third-party testing: every batch should carry a Certificate of Analysis issued by a laboratory independent of the seller, not an in-house or unnamed test. Second, confirm the analytical methods used; a credible COA reports both HPLC purity data with a visible chromatogram and mass spectrometry data confirming molecular identity, not a single purity percentage with no raw data behind it. Third, confirm shipping origin, since domestic United States fulfillment reduces transit time and the customs uncertainty that can accompany international shipments of lyophilized material. Fourth, confirm catalog transparency: specification sheets should list molecular weight and sequence, and the seller should answer direct questions about lot testing.
Catalog Breadth Is Not a Quality Signal
A large catalog is not, by itself, a reason to prefer one supplier over another. Breadth reflects how many compounds a company chooses to list, not whether each one is independently verified, correctly identified, or shipped from a controlled domestic supply chain. When evaluating a Science.bio alternative, it is more useful to check whether every listed product, not just a handful of flagship compounds, carries its own current, batch-specific Certificate of Analysis. A narrower catalog with full documentation on every item is a stronger foundation for a research program than a wide catalog where only some products are backed by verifiable third-party testing.
Where the Ascension Labs Catalog Overlaps with What Science.bio Carried
Broad-catalog suppliers such as Science.bio typically carried research compounds across several standard categories: growth hormone axis peptides, tissue-repair research peptides, neuropeptides, and metabolic research compounds. Ascension Labs stocks research peptides across these same categories, including CJC-1295 and Ipamorelin for growth hormone secretagogue research, Tesamorelin as a full-length GHRH analog, BPC-157 and TB-500 for tissue-repair mechanism research, GHK-Cu for copper-peptide research, Selank and Semax for neuropeptide research, and PT-141, MOTS-c, and NAD+ for additional cellular and metabolic research. Every listing ships with a current, batch-specific COA tested by Janoshik Analytical, so specifications can be verified directly against what a lab previously sourced.
Keeping Experimental Records Consistent After a Vendor Change
A supplier change mid-project is a documentation event, not only a purchasing event. Before placing a first order with any replacement supplier, request the COA in advance and compare purity percentage, observed molecular weight, and testing laboratory against prior records. For protocols that involve a combination of compounds, such as a GHRH analog studied alongside a GHSR-1a agonist, reviewing a side-by-side specification comparison such as CJC-1295 vs. Ipamorelin can help confirm the replacement materials fit the same experimental design before committing lab time to a new batch.
Research Use Notice
Every compound referenced in this article is sold for laboratory research use only; not for human or veterinary use. This guide provides sourcing-continuity information for laboratories and qualified researchers and does not describe or imply any therapeutic application, human dosing, or clinical use of any compound named.
Frequently Asked Questions
Is Science.bio expected to reopen? There is no indication of the company resuming operations, and researchers should plan around the shutdown being permanent rather than waiting on a relaunch before sourcing a replacement.
Will a different supplier version of the same peptide behave identically in a given protocol? Identity and purity are what determine whether a compound is equivalent for research purposes, not the brand that sold it. Two lyophilized samples of the same peptide sequence at the same verified purity threshold should be functionally equivalent starting materials, but this should always be confirmed through the batch-specific COA rather than assumed from the product name alone.
What documentation is worth keeping when switching suppliers? Retain the Certificate of Analysis for both the final batch from the discontinued supplier and the first batch from the new supplier. This creates a clear record for lab notebooks, institutional compliance reviews, or a methods section if the work is later published.
Does Ascension Labs provide a Certificate of Analysis for every batch, not just a representative sample? Yes, batch-specific documentation is available for each lot, and the COA page explains how to read and independently verify it, including what testing from a laboratory like Janoshik Analytical should include.
Is any research compound discussed here approved for human use? No. All compounds referenced are laboratory research chemicals only, not approved for human or veterinary application, and nothing in this article should be read as medical or dosing guidance.