Internal Standard Back Catalog number: 95592 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 18000-0568-100AN5 Guanylurea, 100µg/ml in Acetonitrile, 5ml Price on request 79092 Indole Price on request 1361.10-1G 3-tert-Butylphenol, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 585-34-2 Price on request