Ibuprofen, 100 µg/ml, Methanol, 1ml Back Catalog number: 681069 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 0913.29-100-IO alphaßß (20S,24RS)-24-Ethylcholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 72114 Use Part# 79326 tert-Butyl hydroquinone (TBHQ) Price on request 675339 3,5-Dinitrobenzoic acid, 250mg Price on request