1-Butene Back Catalog number: 71677 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1815.12-K-IO 3,3'-Diaminobenzidine, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 91-95-2 Price on request X9155 1-Nitrosopiperidine Price on request 10387.17-10MG Zopiclone-N-oxide Price on request