(-)-delta-9-THC-acid-13C4 Back Catalog number: 10396.21-50-ME Manufacturer: CHIRON AS Availability: 3 weeks Price on request - + Recommended 32551 Chloroethane Price on request MBP-189 2,3,3',4,4',5,5'-Heptachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane Price on request 11720.12-100-IO 2,2',4,5',6-Pentachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request