4-Hydroxy-2-butanone Back Catalog number: 73685 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 43026 GC/MS Calibration Standard Price on request 10020.12-100-IO 2,2',5,5'-Tetrachlorobiphenyl-3,4,6-d3 Price on request 73443 2,4-Diamino-6-nitrotoluene Price on request