NAD+ Research Reference

A documentation-focused reference page for NAD+ as a research compound. This page describes what the material is, the research context it appears in, how its purity and identity are verified, and how it is stored and handled in a laboratory setting. It makes no claims about effects and is intended for research use only.

What it is

NAD+ (nicotinamide adenine dinucleotide) is a dinucleotide coenzyme found across living cells. As a research compound it is supplied as a lyophilized (freeze-dried) powder for laboratory study. Its role as a coenzyme in cellular redox reactions is why it is a frequent subject of biochemical and cell-biology research, and why researchers value a well-characterized, high-purity reference preparation.

Research context

NAD+ is studied across a range of laboratory contexts, including cellular metabolism, redox biology, and the enzymatic pathways in which the coenzyme participates. This page does not describe any outcome; it notes only that NAD+ is a widely referenced coenzyme in published biochemical research, which is the reason a purity-verified reference material is useful to a lab.

How purity is verified

The material is characterized on a per-lot basis using the standard analytical stack:

• HPLC for purity, reported as the main-peak area over total peak area. Research-grade material is ≥99% by HPLC, read alongside the chromatogram.
• Mass spectrometry for identity, matching observed mass to the theoretical mass.
• LAL (Limulus Amebocyte Lysate) for bacterial endotoxin, commonly referenced to USP <85>.

All three results are documented on a lot-matched certificate of analysis, tied to the lot number printed on the vial. Material is synthesized in the USA.

Storage and handling for lab use

General laboratory handling notes for lyophilized NAD+ reference material:

• Lyophilized powder. Most stable as a sealed, freeze-dried powder. Common practice is storage at -20°C for periods up to about 12 months, with -80°C used for longer-term storage or high-purity reference standards.
• Keep sealed until use. Do not open the vial until ready to weigh and reconstitute, to limit exposure to moisture and air. NAD+ is hygroscopic and sensitive to hydrolysis, oxidation, and light in solution.
• Reconstitution. Reconstitute with an appropriate solvent (bacteriostatic water is commonly referenced), adding slowly along the vial wall and swirling gently rather than shaking.
• Reconstituted solution. Refrigerate at 2-8°C and use within the working window appropriate to the assay. Protect from light and avoid repeated freeze-thaw cycles.

Exact storage parameters depend on your protocol and the requirements of the work; the notes above reflect common laboratory practice for this compound.

Documentation summary

NAD+ reference material at Stacy & Chad is verified ≥99% by HPLC, confirmed by mass spectrometry, screened for endotoxin by LAL, synthesized in the USA, and shipped with a lot-matched certificate you can read before purchase. It is supplied strictly for research use only.