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11-nor-9-Carboxy-Δ⁹-THC, also known as THC acid, is the main secondary metabolite of Δ⁹-THC found in the urine or blood of cannabis users. This internal standard is applicable for numerous applications in GC/MS or LC/MS testing from forensic analysis and clinical toxicology to urine drug testing and isotope dilution methods.
Recommended Storage Condition
Freeze (-20°C)
