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Having someone assist you will make the procedure easier
Some researchers attempt to salvage marginally exposed vials by immediately returning them to 28C and using them within 7 days rather than the standard 28-day window, but this creates uncertainty in downstream data
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21 Mar 2025 Sun exposure is an unavoidable part of life, but prolonged exposure to UV rays can lead to lasting damage, including hyperpigmentation, sunspots, and premature aging
A total of 14 HPLC fractions were collected, separated from solvent in vacuum, the residue of each fraction was suspended in H 2 O (10 mL), freeze-dried twice and, then, screened for the target compounds showing the pseudomolecular ions m/z 453 and 837, respectively, by means of UPLC-TOF MS using the following chromatographic conditions (0.3 mL/min, 40 C): starting with a mixture of H 2 O/MeOH (40/60, v/v), the MeOH content was kept constant for 1 min at 60%, increased to 90% within 8 min, increased to 95% within 10 min, increased to 100% within 1 min, kept constant for 1 min, decreased within 1 min to 60% MeOH, followed by re-equilibration for 1 min
