Formaldehyde Back Catalog number: 79596 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9267.22-25-AN U{13C22}-Roquefortine C, 25µg/mL, Solvent-acetonitrile, Unit 1.2mL, # of units-1, Cas.no. Price on request 10249.13-50-ME 2,4-Dihydroxybenzophenone-13C6, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 131-56-6 (unlabelled) Price on request 12116.18-100-ME Clindamycin hydrochloride,100 µg/mL,MeOH,1mL, Price on request