Overview: NAD+ is an essential redox cofactor and a core reagent in cellular metabolism, sirtuin and ageing research. It is intended strictly for in vitro and laboratory research applications. Contents: A single 500mg lyophilized vial of nicotinamide adenine dinucleotide supplied as sterile lyophilized powder. Purity: >99% (batch-specific COA reports 99.302% purity via HPLC analysis). Quality Assurance: • Independent third-party testing on every batch • HPLC purity verification and mass-spectrometry identity confirmation • Manufactured under strict aseptic and analytical laboratory standards •