Figure 2. Air oxidation of 1-hexadecyl-2-arachidonoyl GPC results in products that absorb in UVB range.
The absorbance of 200 μg/ml purified 1-hexadecyl-2-arachidonoyl-GPC (Avanti Polar Lipids) in ethanol was obtained after dried lipid was left at room temperature in the presence of air for one or fourteen days, and the absorbance obtained using a spectrophotometer.