NAD (Nicotinamide Adenine Dinucleotide) is an essential coenzyme involved in cellular energy metabolism and redox reactions, widely used in biochemistry and life-science research. It is supplied as a high-purity lyophilized powder (>=99% HPLC) in sealed vials for laboratory use. NAD is studied in research on cellular metabolism, mitochondrial function, enzymatic assays and aging-related pathways, and is commonly applied in cell-culture and biochemical experiments. The lyophilized form provides high stability and easy reconstitution for consistent experimental dosing. Every batch is quality-controlled to support reproducible research outcomes. Every batch undergoes strict quality control, and a Certificate of Analysis (COA) is available for specific batches upon request to support reproducible laboratory work. For storage, keep the unopened reagent sealed at 2-8 degree C and protected from light and moisture; for long-term storage, store at -20 degree C and avoid repeated freeze-thaw cycles. We support both small trial orders and large-volume bulk orders. OEM and private-label packaging services are available for research projects, and secure neutral packing is used for all shipments with worldwide delivery to the USA, Europe, Canada, Australia, the UK and many other regions. Please note that this product is intended for laboratory research use only and is not for human or veterinary application.