Showing 3 compounds in Small Molecules and Coenzymes · all 31 compounds
COA
About small molecules and coenzymes
Three catalog entries are not peptides in the usual sense and are grouped here by that fact. NAD+ (nicotinamide adenine dinucleotide) is a pyridine dinucleotide coenzyme. 5-Amino-1MQ (5-amino-1-methylquinolinium) is a small-molecule inhibitor of nicotinamide N-methyltransferase studied in cell and rodent models. L-glutathione is the tripeptide Glu-Cys-Gly, included here because its chemistry (a thiol, a gamma-glutamyl linkage) sets it apart from the alpha-linked peptides elsewhere in the catalog.
Analytical testing for these compounds follows the same certificate structure: purity by HPLC as main-peak area, identity by mass or retention match, measured content per unit, laboratory and report number. NAD+ is sold in 100 mg, 500 mg and 1,000 mg vials; the certificate for each size's current lot is linked on the product page.
Stability notes from the chemistry: NAD+ is sensitive to hydrolysis in solution and to light; glutathione's thiol oxidises to the disulfide over time, which HPLC resolves as a separate peak; 5-Amino-1MQ is a quaternary quinolinium salt and is water-soluble. Storage conditions are those on the certificate for the lot.
Monographs for all three are in the research library.
Questions
Is NAD+ a peptide?
No. NAD+ is a pyridine dinucleotide coenzyme. It is listed here with the other non-peptide research compounds and tested to the same certificate standard.
Why is glutathione in this collection?
Glutathione is a tripeptide, but its gamma-glutamyl linkage and free thiol set its chemistry apart from the alpha-linked peptides in the rest of the catalog, so it is grouped with the small molecules.
What is 5-Amino-1MQ?
5-amino-1-methylquinolinium, a small-molecule inhibitor of nicotinamide N-methyltransferase (NNMT) studied in cell and rodent models. It is a quaternary salt, not a peptide.
How are these compounds tested?
HPLC purity, identity confirmation and measured content per unit, per lot, by a third-party laboratory, with the certificate linked from each product page.
Other collections
For laboratory research use only. Not for human or veterinary use. Every lot ships with a third-party Certificate of Analysis.