ISTD/Surrogate Standard Back Catalog number: 92572 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1367.29-50-IO 17 alpha(H),21 alpha(H)-30-Norhopane, 50µg/mL in Isooctane, 1ml Price on request 684399 D4-Acetylsalicylic acid, 100 µg/ml, Acetonitrile, Price on request 677416 4-Hydrazinobenzenesulfonic acid hemihydrate, 250mg Price on request