Selenium (Se) Back Catalog number: 57834 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8629.31-10UG 3ß,17 alpha(H),21ß(H)-3-Methylhopane, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 126254-83-9 Price on request 72268 Thiamine Price on request 20005 CLP Semi-Volatile Acid Surrogate Standard Price on request