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We're looking at roughly 2-3 weeks lead time on the 25kg drum orders right now, stock availability fluctuates but we usually have a batch in cold storage at 2-8°C. The powder comes as a white to off-white lyophilized cake, soluble in water, and it's shipped with gel packs in insulated containers — you'll want to confirm the shipping window if you're in a warmer climate.
It's a 4113.6 g/mol peptide, C187H291N45O59, and the HPLC shows 99% purity consistently across batches. What that means in practice is you're not dealing with truncated sequences or oxidation byproducts that can throw off your. The CAS is 147732-56-7, and we run a COA on every production lot — the pharmaceutical grade designation is based on tighter endotoxin limits than typical research grade.
Most buyers go with the 25kg drum for metabolic studies or GLP-1 analog screening, but honestly it's overkill if you're only running small-scale binding assays. For those applictions, a 1g or 5g vial would make more sense — our company can split the drum but the MOQ is 1kg if you want to test a sample first. Also, it's not suited for anything involving cell-based work with serum-containing media, the solubility buffer matters more than people think.
We store it at 2-8°C protected from light, and the powder is stable for 24 months or so under those conditions — once reconstituted, you've got about 7 days at 4°C before degradation becomes measurable. One thing most buyers don't ask about is the residual TFA content; ours is typically below 1% by weight, which matters for in vivo work but isn't always on the spec sheet.
Anyway, for the 25kg drum you're looking at roughly $3,500 per kg depending on volume, and we can do partial pallet shipments if you need staggered delivery. The packaing is a single HDPE drum with a tamper-evident seal, double-bagged inside. Lead time is usually 15-20 business days after payment, but we have some stock in our US warehose — give or take 50 units — so check before ordering if you're in a hurry.
