I’ve updated the page on Aldehyde Oxidase, an enzyme in metabolism of a wide variety of nitrogen heterocycles.

I’ve also included A recent publication DOI that suggests a simple test for the early identification of heteroaromatic drug candidates that have a high probability of metabolism by AO. Bis(((difluoromethyl)sulfinyl)oxy)zinc (DFMS) was used as a source of the CF2H racial, simple LCMS was then used to identify a characteristic M+50 peak. It is also possible to scale up and isolate these metabolically blocked compounds and retest them for improved qualities.