Trace Metals 2 Back Catalog number: 53093 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended X9198 Thionazin Price on request 2437.19-K-IO 2-n-Dodecyl-p-cresol, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 25912-91-8 Price on request 2518.7-500MG Theophylline, neat, Solvent-neat, Unit 500mg, # of units-1, Cas.no. 58-55-9 Price on request