When NAD+ levels drop in aging cells, energy metabolism slows and DNA repair falters — that's core problem researchers are really trying to tackle with exogenous supplementation. We've seen it across dozens of labs: once you're below a certain threshold, mitochondrial function basically starts limping, and that's where this powder comes in. 2. What it does is deliver high-purity source of the coenzyme directly to your culture systems, bypassing teh bottlenecks cells hit as they age. Most buyers go with the 10mg or 50mg vial size for their assays, though our company can split batches smaller if needed. 3. Purity runs ≥99% by HPLC, which is tighter than reagent grade for this type of work, and the white crystalline powder dissolves cleanly in water without any cloudiness. Storage is a pain though — you'll need to keep it at -20°C and absolutely protect it form light, or it degrades fast (usually 2-4 weeks of stability outside those conditions). 4. Lead time on stock orders is roughly 15 days or so, but we usually have a few hundred vials ready to ship if you're in a hurry. Also, this isn't suited for oral dosing work at all — it's really only for injection or cell culture research, and we flag that on every COA.