Research Sourcing

Most people in this category buy on one number. Catalyst publishes six.

Compound Standard breaks down what actually gets tested on a research peptide before it ships, what gets left off most certificates, and how to check any supplier's claims in under a minute. Plain language, no jargon, nothing you have to take on trust.

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The breakdowns

Five things almost nobody checks before they order a research compound.

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GLP research compounds

A 99% purity certificate does not say which molecule you got

Purity and identity are two separate tests. In a category with three similarly built GLP-class analogs on the shelf, only one of those tests tells you which one is in the vial.

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GLP research compounds

99% pure does not mean you got 30 milligrams

Purity is a ratio. Net content is an amount. A vial can pass one test and say nothing about the other, and most certificates only print the first.

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Compound quality

Purity is the cheapest test to run. Here are the five most suppliers skip

Identity, quantitative content, heavy metals, sterility and endotoxin are five separate checks. Most listings in this category are silent on every one of them.

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Compound quality

Sterile and endotoxin-free are two different findings

Endotoxins can survive the same process that kills live organisms. Most certificates only report one of the two tests.

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Choosing a supplier

Anyone can attach a PDF and call it a certificate

Only one kind of certificate can be checked against the lab that actually issued it, independent of the seller.

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Every batch cleared before it ships.

Six checks, run by a lab Catalyst does not own, tied to the lot number printed on the vial. Not a paid add-on. Not sent on request afterwards.

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What gets checked, and what usually does not

01IdentityLC-MS confirms the molecule itself, not just its purity

02PurityHPLC against certified reference material

03Quantitative contentMeasured mass and concentration versus the label

04Heavy metalsICP-MS screening for lead, arsenic, cadmium, mercury

05SterilityCultured to confirm nothing grows, where applicable

06EndotoxinLAL assay, because sterile does not mean endotoxin free

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Catalyst's own research catalog. Every listing carries its molecular formula, CAS number and molecular weight on the label, not just a product name.

Verify a certificate before you order.

Every Catalyst Biolabs certificate is issued by Horizon Analytical, an independent U.S. lab, and is checkable on the lab's own site rather than a PDF the seller controls.

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Legal Disclaimer: Catalyst Biolabs is a U.S.-based supplier of research chemicals. We are not a compounding pharmacy under Section 503A, nor an outsourcing facility under Section 503B of the Federal Food, Drug, and Cosmetic Act. All products available on this site are intended strictly for laboratory research purposes only. They are not intended for human or animal consumption, and are not approved to diagnose, treat, cure, or prevent any disease or medical condition. Access to this website and the purchase of any products is restricted to individuals 21 years of age or older.