Ammonium as N Back Catalog number: 50792 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended GUM 11.3 Glycerol, Surface tension 63mN/m at 20°C, 30ml Price on request 1266.8-5ML m-Xylene, neat, Solvent-neat, Unit 5mL, # of units-1, Cas.no. 108-38-3 Price on request 9987.8-100-ME N-Acetyl-S-(carbamoylethyl-d4)-L-cysteine , 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 81690-92-8 (unlabelled compound) Price on request