Internal Reference Standard Back Catalog number: 52187 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0603.27-100-IO alpha alpha alpha (20S)-Cholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 41083-75-4 Price on request 56045 Rhodium (Rh) Price on request 2332.12-K-HX 5-tert-Butyl-m-xylene, 1000µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 98-19-1 Price on request