So you're sourcing for US labs and need something that'll clear customs without headaches—we ship with full documentation including COA, MSDS, and origin certs, usually within 20 days or so form order.

It's a white powder, 99.8% by HPLC, and the pH sits at 3.0-3.1 which is tighter than reagent grade for this; most buyers go with teh 25kg kraft bags but our company can split smaller if you're just testing.

What you'll get are sealed drums with <1% water content and heavy metals under 0.5ppm each—basically clean enough for metabolic studies, though don't use it for anything clinical since it's research only.
We've shipped to several UK biotechs and import paperwork (SDS, COA, and a simple letter of research purpose) has never been an issue—just confirm your local rules on NMN because some countries have restrictions.

Storage is just dry and cool, and shelf life runs over 12 months, but honestly the powder can clump if humidity hits—so keep it sealed.