Perchlorate Level 2 Back Catalog number: 59340 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10278.12-100-ME (±)-Sotalol-d7 hydrochloride (isopropyl-d7),100 µg/mL,MeOH,1mL, Price on request 10594.14-10MG (S)-(+)-Efavirenz Price on request 0699.30-100-IO Hop-21(22)-ene (17ß(H)), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1615-92-5 Price on request