13 C NMR (100 MHz, CDCl 3 ): (ppm): 159.83, 151.91, 144.77, 143.46, 143.43, 143.25, 139.96, 133.16, 131.98, 131.89, 130.99, 129.54, 128.76, 128.45, 128.09, 127.80, 127.77, 114.73, 113.52, 81.98
Analytical methods The cell density was estimated by measuring the optical density of an appropriately diluted culture sample at 600 nm (OD 600 ) using a UV-7504 Spectrophotometer (Xinmao Instrument, Shanghai, China)
For those seeking acetyl glutathione supplements with enhanced bioavailability, targeted formulations offer improved absorption compared to standard versions
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Both compounds share the same regulatory timeline: moved to Category 2 in 2023, removed from Category 2 in April 2026, and scheduled for PCAC review on July 23, 2026