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Ochratoxin A belongs to the class of mycotoxins primarily produced by species of the Aspergillus and Penicillium genera. Ochratoxin A possesses significant nephrotoxicity, immunotoxicity, teratogenicity, and carcinogenic potential, with biochemical mechanisms involving the induction of intracellular free radicals and severe oxidative damage.

Ochratoxin A-13C20 is intended for use as an internal standard for the quantification of ochratoxin A by GC- or LC-MS. Ochratoxin A (T75659) is a mycotoxin that has been found inAspergillusandPenicillium.1It increases lipid peroxide levels and the number of apoptotic cells, as well as reduces superoxide dismutase activity in rat kidney when administered at a dose of 120 μg/kg.2Topical application of ochratoxin A (80 μg/mouse) induces DNA damage, cell cycle arrest at the G0/G1phase, and apoptosis in mouse skin cells.1It also initiates tumor formation in a two-stage mouse skin tumorigenesis model. Ochratoxin A (T75659) has been found as a contaminant in a variety of foods.3

Ochratoxin α (Ochratoxin alpha) is a degradation product of Ochratoxin A, used for studying Ochratoxin A degradation.