Sourcing research compounds in Canada has historically meant choosing between overseas suppliers with no accountability and domestic vendors who call themselves transparent until you ask for proof. A verification-first checklist cuts through the marketing. Run any supplier — including this one — through it.
1. Is every batch independently tested?
Look for independent, third-party HPLC testing, not self-certification or manufacturer-provided results. If the testing party has a commercial stake in the outcome, the result is not independent.
2. Are COAs published openly?
A Certificate of Analysis you can only get "on request" is a red flag. The strongest standard is public publication you can read before you buy. G13 publishes every batch in a public COA Portal — no login.
3. Can you verify your exact lot?
A COA must be tied to a specific lot number that matches what you receive. A generic or representative COA does not verify your unit. Ask: can I look up the exact batch I was shipped?
4. Is there a stated purity standard?
A clear minimum purity standard (G13's is ≥99%), produced under GMP-compliant conditions, with results published per batch, signals a real process rather than a number on a page.
5. Where does it ship from?
For Canadian researchers, domestic fulfillment matters. Orders shipped from within Canada avoid border crossings, customs inspection, and cold-chain interruption. G13 fulfills every order from Ontario.
6. Is the compliance framing honest?
Reputable suppliers are explicit that products are research reference materials for laboratory research use only — and do not make human-use, dosing, or therapeutic claims. Hype is a warning sign, not a feature.
Score any supplier against these six points. The ones that pass all of them are rare. Browse G13's verified catalog or read the standard behind it.