WS Boron Back Catalog number: 55217 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1931.6-1MLX10 Pentafluoropropionic anhydride, neat, Solvent-neat, Unit 1mL, # of units-10, Cas.no. 356-42-3 Price on request 676691 Heptachlor, 100 µg/ml, Ethyl acetate, 1ml Price on request 681772 Octocrylene, 100 µg/ml, Acetonitrile, 1ml Price on request