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 673724 Tetraconazole, 10 µg/ml, Ethyl acetate, 10ml Price on request 10077.4-100MG N-Nitropiperazine-2,2,3,3,5,5,6,6-d8, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. Price on request 71489 2,5-Dimethylindole Price on request