Silver (Ag) Back Catalog number: 57147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9469.14-100MG Trimethoprim, neat, Solvent-neat, Unit 100mg, # of units-, Cas.no. 738-70-5 Price on request 683691 Atrazine-desisopropyl-2-hydroxy, 100 µg/ml, Metha Price on request 677577 L-Valine, 250mg Price on request