2-Hydroxy-3-methylbutyric acid Back Catalog number: 73686 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 58139 Yttrium (Y) Price on request NK-ST-A4 Native PCDD/PCDF Solution/Mixture, 1.2ml, nonane Price on request 98747 UCMR4 - Method 525.3 - Surrogate Mix Price on request