Prometon Back Catalog number: 70253 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9002.21-100-ME Cortisol-9,11,12,12-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 73565-87-4 Price on request 21011 CLP Volatile BTEX Standard Price on request 2700.8-K-ME Isocaffeine (1,3,9-Trimethylxanthine), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 519-32-4 Price on request