Trace Metals 3 Back Catalog number: 52094 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1839.9-1G 4-Ethylbenzoic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 619-64-7 Price on request 94031 Surrogate Standard Price on request 9777.18-10MG 17ß-Estradiol-16,16,17-d3, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 79037-37-9 Price on request