Silicon (Si) Back Catalog number: 57114 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2180.41-5MG n-Hentetracontane, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 7194-87-8 Price on request 71917 Ethyl (S)-(-)-lactate Price on request 3153.6-K-IO Methyl pentanoate (Methyl valerate), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 624-24-8 Price on request