title: Colorimetric determination of indolic drugs.
abstract: A colorimetric method has been developed for the quantitative determination of the rescinnamine, reserpine upto (-10(-4M)), Yohimbine on complexation with bromothymol blue. The coloured complexes exhibit absorption maxima in the region 415-416 nm. The RSD (Relative Standard Deviation) of the method is 2.02%. The method is simple, easy, rapid and convenient for routine analysis of the indolic drugs.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, University of Karachi, Karachi-75270, Pakistan.
authors.forename: Iqbal
authors.initials: I
authors.lastname: Azhar
authors.forename: Farah
authors.initials: F
authors.lastname: Mazhar
authors.forename: Qazi Nawab
authors.initials: QN
authors.lastname: Manzar
authors.forename: Iftekhar
authors.initials: I
authors.lastname: Hussain
authors.forename: Sumbul
authors.initials: S
authors.lastname: Shamim
mesh_terms: D001979:Bromthymol Blue / Q000737:chemistry; D002725:Chloroform; D003124:Colorimetry / Q000379:methods; D004583:Electrons; D026121:Indole Alkaloids / Q000032:analysis; D007211:Indoles / Q000032:analysis* / Q000737:chemistry; D008968:Molecular Conformation; D015203:Reproducibility of Results; D012110:Reserpine / Q000031:analogs & derivatives / Q000032:analysis; D012997:Solvents; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013678:Technology, Pharmaceutical / Q000379:methods; D013997:Time Factors; D015016:Yohimbine / Q000032:analysis
chemical_list: D026121:Indole Alkaloids; D007211:Indoles; D012997:Solvents; D015016:Yohimbine; D002725:Chloroform; D012110:Reserpine; C084826:rescinnamine; D001979:Bromthymol Blue