Silicon (Si) Back Catalog number: 57914 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2658.12-100-IO 3'-Fluoro-3,4,4'-trichlorobiphenyl, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 72814 Roxithromycin Price on request 10228.14-10MG Benzyl 2-hydroxybenzoate-3,4,5,6-d4, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1219802-40-0 Price on request