Butalbital Back Catalog number: 96537 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1577.23-100-ME Pholcodine, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 509-67-1 Price on request 9396.14-10MG (+/-)-Atenolol-d7 (isopropyl-d7), neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 29122-68-7 Price on request 675791 PCB 136, 10 µg/ml, Isooctane, 10ml Price on request