NAD+ (nicotinamide adenine dinucleotide) is a coenzyme rather than a peptide, and its structure explains its central role in redox chemistry.
A dinucleotide structure
NAD+ is built from two nucleotides joined by their phosphate groups — one bearing nicotinamide, the other adenine. The nicotinamide ring is the redox-active site that cycles between NAD+ and NADH, the basis of its mechanism of action.
How research material is made
Research-grade NAD+ is produced by enzymatic or chemical synthesis and then purified; because it is not a chain of amino acids, characterization emphasizes the intact dinucleotide rather than a peptide sequence.
Why structure matters
The dinucleotide framework is what makes NAD+ a universal electron carrier across the reactions covered in NAD+ in cellular research. Batch integrity is confirmed by purity testing.
Product page: NAD+ research vials.
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