Organic Standard Back Catalog number: 97782 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0271.24-10MG Naphtho[2,3-k]fluoranthene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 207-18-1 Price on request 72814 Roxithromycin Price on request 3882.1-100MG Semicarbazide HCl, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 563-41-7 Price on request