Symptoms may last minutes or hours and often get better with antacids or acid-suppressive medications (7). In more severe GERD cases, the refluxed content can reach your larynx (voice box), pharynx ...

Accordingly, 0.1 g powder of the sample was extracted in 20 mL of 1%–3% HCl in 70%–100% MeOH, refluxed for 1 h, and filtered. This extraction process was repeated once, the filtrate was combined, and ...

Potassium carbonate (483 mg, 3.5 mmol) and 1-chlorocarbonyl-4-piperidinopiperidine hydrochloride (267 mg, 1.0 mmol) were added to the above reaction system, and the reaction was refluxed for 8 h. When ...

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