Internal Standard Back Catalog number: 95665 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2532.13-100MG (2RS)-2-(4-Butylphenyl)propanoic acid, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 3585-49-7 Price on request 681512 2,4,5-T-iso-octyl ester, 100mg Price on request 50593 Copper (Cu) - 10 PPM Price on request