Internal Standard for AB SIM Back Catalog number: 94541 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 53136 Multi-Element Solution 4 Price on request 2958.8-100-AN Methyl parathion-d6 (dimethyl-d6), 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 96740-32-8 Price on request 2801.18-100MG Diethylstilbestrol, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 56-53-1 Price on request