4-Hydroxy-2-butanone Back Catalog number: 73685 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71987 2-Bromo-2-nitro-1,3-propanediol Price on request 72081 2-Methyl-4,6-dinitrophenol-d2 Price on request 41003 EPA Method 608Mix #3 Price on request