13C3-Caffeine, 100 µg/ml, Methanol, 1ml Back Catalog number: 681491 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 15900-2085-100AN1 Ethofumesate 2-keto, 100µg/ml in Acetonitrile, 1ml Price on request 94203 Method 624 Volatile Standard Price on request 11633.20-50MG Cefuroxime axetil,neat,neat,50mg, Price on request