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 XA03010012TO Alkanes-Mix 12, 100µg/mL in Toluene, 1ml Price on request RTC-CRM824 Pesticides - Sandy Loam 4, 50g Price on request 70259 Pyrene Price on request