UDP-6-azido-GalNAc disodium salt

UDP-6-azido-GalNAc is a modified GalNAc nucleotide with an azide at sugar C6. This catalog entry is labelled as a disodium salt. It is distinct from UDP-GalNAz, whose azide is in the N-acyl substituent. Chemical identity CAS 1202854-87-2 appears in supplier listings for this donor, but references do not consistently distinguish the free acid from the disodium salt. Confirm the exact counterion and identity from the supplied lot CoA before using a registry number or molecular weight in experimental calculations. Product selection and documentation Reference identifiers describe the labelled chemical form; they do not establish the counterion or hydration of a particular lot. Confirm the supplied form, assay, purity method and storage conditions on the lot certificate of analysis. Use the lot-specific formula weight when preparing molar solutions. Experimental planning Enzyme acceptance depends on the transferase, acceptor and reaction conditions. Validate the donor with your enzyme system; nucleotide sugars should not be assumed to enter cells simply because related monosaccharide precursors do.