2,4,6-Trimethylphenol (Mesitol), primarily reacting with organic matter (3 DOM*), is a probe compound that undergoes rapid oxidation by singlet oxygen in aqueous solutions.

Danofloxacin-d3-1 is deuterium labeled Danofloxacin. Danofloxacin is a third generation fluoroquinolone and orally active antimicrobial agent. Danofloxacin shows a broad spectrum of activity against most Gram-negative and Gram-positive bacteria, mycoplasma and chlamydia species, and plays an antimicrobial role by inhibition of bacterial DNA-gyrase.

2,3-Pentanedione is a food additive that also occurs naturally as a fermentation product in beer, wine and yogurt and is released during the roasting of coffee beans.