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Look, NAD is pretty unstable in solution once you reconstitute it — that's just the nature of the molecule, so we always ship it as a dry powder and recommend storing it properly below -20°C, otherwise you'll degrade it fast, and honestly most buyers don't realize that until they've wasted a batch or two.
But for US and EU researchers working on cellular metabolism or DNA repair pathways, this still works great because we maintain tight control on purity — HPLC shows 99% to 101%, and we've got heavy metals down under 0.5ppm which matters for sensitive assays where contamination ruins data.
It's a white to yellowish powder, roughly 662 g/mol molecular weight, and we include full COAs and TDS with every order so you can verify specs yourself — most import docs (like SDS) are ready to go for customs, usually 2-3 business days to generate.
We typically stock 10g and 50g bottles, MOQ is 10g for first-time buyers but our company can scale up to kilos after that, lead time is about 15-18 working days for standdard orders (check current stock though, sometimes our company have it ready).
What you probably don't know is the loss on drying is ≤5% — that's tighter than some suppliers who run up to 10%, so you get more active materail per gram, and teh microbial count is under 100 cfu/g which is fine for cell-based work.
Anyway, main limitation is it's not sterile — we don't sell it for injection or anything like that, it's strictly research-grade, so if you need sterile filtration you'll handle that on your end.
