Caffeine, 1000µg/ml in MeOH, 1ml Back Catalog number: 71151 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 11246.8-5MG Asulam-d3 (methoxy-d3),neat,neat,5mg, Price on request 8035.21-100-ME Lasiocarpine, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 303-34-4 Price on request 54558 Potassium (K) Price on request