(-)-delta-9-THC-acid-13C4 Back Catalog number: 10396.21-50-ME Manufacturer: CHIRON AS Availability: 3 weeks Price on request - + Recommended 35021 EPA Method 502/524 Volatile Standard Price on request 682261 3,5-Dibromotoluene, 100mg Price on request 72743 cis-Androsterone Price on request