Every compound we release carries the HPLC chromatogram and mass-spec confirmation for its own lot — not a specimen certificate, not a batch from last year. Look it up before you buy.
Compounds are grouped by the mechanism they're used to interrogate, so a search that starts with a question ends at the right shelf.
Purity is the number everyone advertises. These are the things that actually decide whether a result is reproducible.
The COA you download is generated from the vial you receive, matched by lot number. We do not publish representative certificates and we do not reuse them across production runs.
Purity and identity are re-run by an accredited third-party laboratory with no commercial interest in the result. Both sets of numbers appear side by side on the certificate.
Endotoxin, residual solvent, heavy metals, and microbial load. A 99% pure compound can still be unusable if the remaining 1% is the wrong thing.
Net peptide content, not gross powder weight. Salt and counter-ion mass is disclosed, so the milligrams on the label are the milligrams in the vial.
Temperature-sensitive compounds ship in validated insulated packaging with gel packs. If a shipment arrives warm, tell us within 72 hours and we replace it.
Every vial, box, and invoice states research-use-only status. We don't publish dosing protocols, we don't imply therapeutic benefit, and we decline orders that suggest otherwise.
A single HPLC number describes one axis of quality. Four other failure modes will ruin an experiment just as thoroughly, and none of them show up on a purity line.
Bacterial pyrogens survive sterile filtration and confound any inflammatory readout. Screened by LAL on every lot.
Trifluoroacetic acid left from purification is cytotoxic in culture at concentrations well below what a purity assay would flag.
Catalyst and reagent carryover from synthesis, quantified by ICP-MS rather than assumed absent.
Mass spectrometry proves the molecule is the one on the label. Purity alone only proves it's mostly one thing.
Nothing is listed for sale until it has cleared all four stages. A lot that fails any one of them is quarantined and destroyed — never discounted, never re-blended.
Solid-phase synthesis at a cGMP-compliant facility. Incoming lots are quarantined on arrival and sampled before anything else happens.
Reverse-phase HPLC for purity, mass spectrometry for identity, Karl Fischer for water content. Results are recorded against the lot number.
A split sample goes to an independent accredited lab. If the two purity figures disagree by more than 0.5%, the lot is held pending investigation.
Endotoxin, residual solvent, heavy metals, and bioburden. Only then is the lot released, and its certificate published to the public library.
Every certificate of analysis and safety data sheet we hold is searchable without an account, without an email address, and without a purchase. If a supplier will only show you documentation after you've paid, that tells you something.
Open the COA libraryHow certificates are read, what purity figures do and do not establish, and the handling details that decide whether a reagent works.
A certificate that reports one purity number is telling you a fraction of the story. What each section establishes, and what a missing one means.
Purity is one axis of quality and the easiest to optimise for. Four other failure modes will ruin an experiment just as thoroughly.
Researchers, laboratories, universities, and institutions purchasing reagents for in-vitro experimentation and analytical reference. You must be at least 21 and qualified to handle research chemicals safely. We decline orders where the stated or implied purpose is human or animal administration.
It means these materials are laboratory reagents and nothing else. They are not drugs, supplements, cosmetics, or medical devices, they have not been evaluated by the FDA for any therapeutic purpose, and they are not manufactured, packaged, or labelled to a standard that would make them safe to administer.
This is not a formality we've added to satisfy a lawyer. It is a description of what the product is. If you are looking for something to take, this is the wrong site.
The lot number is printed on the vial label and on your packing slip. Enter it in the COA library to pull the exact certificate, including both the in-house and third-party purity results.
Move the sealed vial to −20 °C, desiccated and protected from light, as soon as it arrives. Short transit at ambient temperature is well tolerated by a dry lyophilate — the stability risk is long-term storage, not two days in a courier van.
We do not publish preparation, solvent, or quantity guidance. Determining appropriate laboratory procedure is the responsibility of the qualified researcher receiving the material.
Photograph the packaging and the vial as received and email us within 72 hours. Broken vials, compromised seals, and cold-chain failures are replaced at our cost with no return shipment required. Full terms are on the shipping page.
Browse the catalog, or search the certificate library first — we'd rather you checked.