title: API determination by NIR spectroscopy across pharmaceutical production process.
abstract: The purpose of this research was to demonstrate the ability of reflectance near-infrared (NIR) spectroscopy for quantitative analysis of an active ingredient in different production steps of a solid formulation. The drug is quantified at two different steps of a pharmaceutical process: after granulation and after tablet coating. Calibration samples were prepared by mixing pure drug, excipients, and batch samples (75-120 mg/g active ingredient) using a simple methodology that can be easily carried out in a laboratory. Partial least squares calibration models were calculated in second-derivative mode using the wavelength range 1,134-1,798 nm. The error of prediction for granulated samples was 1.01% and 1.63% for tablets. The results prove that NIR spectroscopy is a good alternative to other, more time-consuming means of analysis for pharmaceutical process monitoring.
authors.affiliation: Departament de Química, Unitat de Química Analítica, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain. marcel.blanco@uab.es
authors.forename: M
authors.initials: M
authors.lastname: Blanco
authors.forename: M
authors.initials: M
authors.lastname: Bautista
authors.forename: M
authors.initials: M
authors.lastname: Alcalà
mesh_terms: D002138:Calibration; D002626:Chemistry, Pharmaceutical; D005079:Excipients; D016018:Least-Squares Analysis; D019265:Spectroscopy, Near-Infrared / Q000379:methods*; D013607:Tablets
chemical_list: D005079:Excipients; D013607:Tablets