Internal Standard Back Catalog number: 95665 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675482 Octafluoronaphthalene, 100mg Price on request 73380 1,4-Butanediol Price on request 2965.11-100-IO Propoxur-d3 (N-methyl-d3), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1219798-56-7 Price on request