title: Determination of fenoverine, a modulator of smooth muscle motility, in capsules and in human plasma: application to dosage form stability and a pilot study in humans.
abstract: Fenoverine is a novel, potent, musculotropic, spasmolytic agent that affects primarily the gastrointestinal tract, bile duct, and female genital organs. A simple, specific, and accurate HPLC method was developed for the determination of fenoverine in capsules and plasma. This method has been successfully applied to stability studies of fenoverine capsules and to a pilot study in a normal, healthy volunteer following oral administration of fenoverine. For the determination of fenoverine in capsules, a Nucleosil 5-micron CN column, with acetonitrile:0.1 M ammonium acetate (60:40) as mobile phase and detection at 254 nm, was employed. The mean correlation coefficient of the calibration curve (n = 6) for the assay was 0.9999 over a concentration range of 24.6 to 147.6 micrograms/mL of fenoverine standard solutions. Fenoverine did not decompose significantly at 4, 45, 55, and 65 degrees C for 3 months. The mean correlation coefficients of within-day and between-day calibration curves were 0.9995 and 0.9999, respectively, over a range of 10 to 1000 ng/mL of fenoverine in plasma. The limit of detection was 10 ng in plasma.
authors.affiliation: School of Pharmacy, National Defense Medical Center, Taipei, Republic of China.
authors.forename: O Y
authors.initials: OY
authors.lastname: Hu
authors.forename: P H
authors.initials: PH
authors.lastname: Chen
authors.forename: Y J
authors.initials: YJ
authors.lastname: Fang
authors.forename: H S
authors.initials: HS
authors.lastname: Tang
authors.forename: L H
authors.initials: LH
authors.lastname: Pao
authors.forename: K M
authors.initials: KM
authors.lastname: Kwok
authors.forename: M L
authors.initials: ML
authors.lastname: King
mesh_terms: D000284:Administration, Oral; D002214:Capsules / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D004355:Drug Stability; D006801:Humans; D010276:Parasympatholytics / Q000008:administration & dosage / Q000032:analysis / Q000097:blood*; D010640:Phenothiazines / Q000008:administration & dosage / Q000032:analysis / Q000097:blood*; D010865:Pilot Projects; D010879:Piperazines
chemical_list: D002214:Capsules; D010276:Parasympatholytics; D010640:Phenothiazines; C048314:fenoverine; D010879:Piperazines