2066-93-5

Doxazosin impurity 12 is a CTX-Mβ-lactamase inhibitor, with a Ki value of 0.7 mM for CTX-M[1].

ChEBI: 1,2-naphthoquinone-4-sulfonic acid is an arenesulfonic acid that is 1,2-naphthoquinone substituted at position 4 with a sulfonic acid group. Used principally as a reagent in colorimetric determinations. It has a role as a colorimetric reagent. It is an arenesulfonic acid and a naphthalenone.

[1] Yu Chen, et al. Molecular docking and ligand specificity in fragment-based inhibitor discovery. Nat Chem Biol. 2009 May;5(5):358-64. DOI:10.1038/nchembio.155