Bolstar Back Catalog number: 70840 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72249 L-Serine Price on request 2540.7-25MG Paraxanthine, neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 611-59-6 Price on request 8406.12-100MG Perfluoro-n-dodecane, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 307-59-5 Price on request