Phthalic acid, bis-2-ethoxyethyl ester, certified, 0.1g Back Catalog number: C16171900 Availability: In the manufacturer's stock Price on request - + Recommended EPA-537PDSL-R1 EPA Method 537 Analyte Primary Dilution Standard (linear isomers only), 1.2ml, methanol Price on request 2540.7-K-ME Paraxanthine, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 611-59-6 Price on request 681370 Trigonelline HCl, 100mg Price on request