4-amino-2,3,5,6-tetradeuteriobenzoic acid,4-amino-2,3,5,6-tetradeuteriobenzoic acid,"Labelled p-Aminobenzoic Acid. Widely distributed in nature as a B complex factor. Baker’s yeast contains 5 to 6 ppm, brewer’s yeast from 10 to 100 ppm. Occurs free and in ester form.;Application of Labeled APIs: Labeled Aminobenzoic Acid, intended for use as an internal standard for the quantification of Aminobenzoic Acid by GC- or LC-mass spectrometry.",Benzene Stable Isotopes
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