Theophylline Back Catalog number: 72031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59524 Anion Standard Price on request 55212 Lanthanum (La) Price on request 10254.47-1G Brilliant Blue (E113), neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 6104-58-1 Price on request