Custom Pura Peptides Tirzepatide CAS 9004-61-9 Pharmaceutical Grade

Went with the 99% purity on this one, CAS 9004-61-9, because for metabolic research we really can't afford off-spec batches throwing off our curves—batch consistency has been a headache before, so the COA for each lot is non-negotiable here, and they confirmed retesting within 30 days if anything looks off (usually 2-4 weeks turnaround).

It's pharmaceutical grade, which matters for us since reagent-grade stuff tends to have more variability in solubility, and we need water-soluble powder that dissolves cleanly every time; they had HPLC data from the last three lots handy, so that gave me some confidence.

Packaging is 5mg per vial, and they store it at -20°C before shiping—pretty standerd, but one thing a lot of buyers don't think to ask is whether teh vials are sealed under inert gas; they are, which helps keep degradation minimal during transit, and we'll test a random vial form each box as our own sanity check.

Basically, the suppiler was upfront about the MOQ being 50 vials, which is fine for our current headcount, and they offered to ship with a full TDS and SDS bundled in the package—no extra cost—so we're not dealing with hidden fees later.

Also, we've had issues with peptides that look white but show yellow tinting after a few weeks; this is what it does is stay white for at least a year when stored properly, which is better than reagent grade for this particular use case, though if you're doing anything with cellular viability assays, I'd still retest solubility after six months just to be safe.

So I placed the order for 200 vials (50mg total), COD payment, delivery in about 15 business days—just wanted you to have the paper trail in case procurement asks.