title: First-derivative spectrophotometric determination of salicylic acid in aspirin.
abstract: Salicyclic acid has been determined in aspirin powder and tablets by first-derivative spectrophotometry at 316 nm with base-line correction, with a coefficient of variation less than 1%.
authors.affiliation: Pharmaceutical Chemistry Department, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh-11451, Saudi Arabia.
authors.forename: A A
authors.initials: AA
authors.lastname: Wahbi
authors.forename: H A
authors.initials: HA
authors.lastname: Al-Khamees
authors.forename: A M
authors.initials: AM
authors.lastname: Youssef