Caffeine, 1000µg/ml in MeOH, 1ml Back Catalog number: 71151 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 71653 Hexafluoro-2-propanol Price on request 9068.8-K-IP 6-Chlorovanillin , 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 18268-76-3 Price on request EU-PAH-LCS Deuterated PAH Solution/Mixture, 1.2ml, toluene Price on request