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  • Journal
    Digital Access Ovid v. 3-8, 2005-10.
  • Article
    Honigberg IL, Stewart JT, Smith AP, Plunkett RD, Justice EL.
    J Pharm Sci. 1975 Aug;64(8):1389-93.
    Parameters associated with the separation of antianxiety-antispasmodic agents were investigated using high-pressure liquid chromatography. Eight widely prescribed drugs were studied. The compounds were chromatographed on reversed-phase octadecyltrichlorosilane (C18) or diphenyldichlorosilane (phenyl) columns, using mixtures of absolute methanol and distilled water buffered with ammonium dihydrogen phosphate, ammonium acid phosphate, or ammonium carbonate. A mixture of phenobarbital-propantheline bromide was selected to demonstrate the utility of the separation and quantification method. The mixture was chromatographed on a phenyl column, using absolute methanol-aqueous 1 percent ammonium dihydrogen phosphate (60:40) (pH 5.85) at a flow rate of 1.4 ml/min. Each determination can be achieved in approximately 15 min with an accuracy of 1-2 percent.
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