Selenium (Se) Back Catalog number: 56134 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2496.14-K-ME Di-n-heptyltin dichloride, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 74340-12-8 Price on request 53145 Method 200.8/1638/1640 Internal Standard Price on request 9321.14-5MG Diclofenac-d4 (phenyl-d4),neat,neat,5mg Price on request