Trimethoprim, certified, 0.25g Back Catalog number: C17875000 Availability: In the manufacturer's stock Price on request - + Recommended 0681.28-200-IO (24R)-24-Methyl-3,5-cyclocholestane and (24R)-24-Ethyl-3,5-cyclocholestane, 200µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 36545-67-2 / '38776-72-6 Price on request X9115 Hexachlorocyclopentadiene Price on request 8225.6-100 Demeton-S-methyl, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 919-86-8 Price on request