WS Nitrosamines Back Catalog number: 38339 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8881.8-50-IO Pentabromoethylbenzene, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 85-22-5 Price on request 34411 1,1-Difluoroethane, 20mg/mL in MeOH, 1ml Price on request 11319.13-10MG Melatonin,neat,neat,10mg, Price on request