2-Butanone Back Catalog number: 70053 Availability: In the manufacturer's stock Price on request - + Recommended S-4079-ASS-5IOX5 Routine Biomarker Internal Standard Cocktail 3 S-4079-ASS-IO 7 Analytes, each concentration as listet in isooctane; units: 10x1mL, 1x5mL, 5x5mL Please inquire for other quantities. Chiron No. Name CAS No. Price on request 677808 D4-Methanol, 100 µg/ml, Acetonitrile, 1ml Price on request 1872.8-K-ME 3-Methylheptane, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 589-81-1 Price on request