title: Determination of certain phenothiazine drugs with diazotized p-nitroaniline.
abstract: A colorimetric method for the determination of 7 phenothiazine drugs by interaction with diazotized p-nitroaniline has been developed. Neither the degradation products of the drugs nor the common excipients in pharmaceutical preparations interfere.
authors.affiliation: Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Assiut, Assiut, Egypt.
authors.forename: S R
authors.initials: SR
authors.lastname: El-Shabouri