UDP-GalNAz disodium (UDP-N-azidoacetylgalactosamine disodium) is the analogue of UDP-GalNAc. UDP-GalNAc is the donor substrate of many N-acetylgalactosaminyltransferases, enzymes which transfer GalNAc from the nucleotide sugar to a saccharide or peptide acceptor.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

[1]. Hang HC, et al. Probing glycosyltransferase activities with the Staudinger ligation. J Am Chem Soc. 2004;126(1):6-7. [2]. Bourgeaux V, et al. Two-step enzymatic synthesis of UDP-N-acetylgalactosamine. Bioorg Med Chem Lett. 2005;15(24):5459-5462. [3]. Hang HC, et al. A metabolic labeling approach toward proteomic analysis of mucin-type O-linked glycosylation. Proc Natl Acad Sci U S A. 2003;100(25):14846-14851. doi:10.1073/pnas.2335201100 [4]. Lo PW, et al. O-GlcNAcylation regulates the stability and enzymatic activity of the histone methyltransferase EZH2. Proc Natl Acad Sci U S A. 2018;115(28):7302-7307. [5]. Vanessa Bourgeaux, et al. Two-step enzymatic synthesis of UDP-N-acetylgalactosamine. Bioorg Med Chem Lett. 2005 Dec 15;15(24):5459-62.