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- W2285851965 abstract "An extraction-spectrophotometric method was established for the determination of certain I²-lactams, cefaclor, ampicillin and amoxycillin in pure and dosage forms using methylene blue (MB) as an analytical reagent. The method is based on the formation of a chloroform-extractable blue colored ion-association complex (MB cation-antibiotic anion) through the reaction of a I²-lactam antibiotic with an excess of methylene blue at pH 9.5. Good agreement with Beer's law was found in the range of antibiotic concentration of 3.5-90.0 I¼g/ml with a detection limit of 3.0 I¼g/ml. The method is simple, precise and accurate for pure analyte with excellent recovery (97-102%); and also, this does not require any separation of soluble excipients in pharmaceutical preparations." @default.
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- W2285851965 date "2000-07-01" @default.
- W2285851965 modified "2023-09-24" @default.
- W2285851965 title "Extraction-Spectrophotometric Determination Of Certain-?-Lactam Antibiotics With Methylene Blue" @default.
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