science-softCon uv/vis+ spectra data base; www.uv-spectra.de; (C) science-softCon 2019 Substance: caffeine Other Names: 1,3,7-trimethylpurine-2,6-dione Formula: C8H10N4O2 CAS-No.: 58-08-2 PubChem: CID 2519 Study: uv absorption spectra Authors: A. Ruiz Medina, M.L. Fernandez de Cordova, A. Molina-Diaz Title: Simultaneous determination of paracetamol, caffeine and acetylsalicylic acid by means of a FI ultraviolet pls multioptosensing device Journal/Source: J. Pharma. Biomed. Analysis, 21, 983-992, (1999); doi:10.1016/S0731-7085(99)00216-2 Data: table, diagram Energy/Wavelength range: 220 - 320 nm Resolution: 0.35 nm Temperature: Temperature dependence: Pressure/Concentration: 10 µg ml-1 Phase: 0.5% pH 1 HClO4 solution pH: 1 Comments: Diode-array spectrophotometry has been used to obtain spectra (240–350 nm) of the analytes. Author to whom correspondence should be addressed: (e-mail address):