Degradation kinetics of (+/-)-4'-ethyl-2-methyl-3-(1-pyrrolidinyl)propiophenone hydrochloride (HY-770) and structure-stability relationship among its analogues in aqueous solution.


The kinetics and pathways for degradation of (+/-)-4'-ethyl-2-methyl-3-(1-pyrrolidinyl)propiophenone hydrochloride (HY-770; 1), a newly developed muscle-relaxing agent, and its analogues were studied in aqueous solution at 50 degrees C, ionic strength 0.5 M, and pH 8.0-12.0. Compound 1 and its four analogues followed pseudo-first-order degradation kinetics… (More)


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