11-Nor-9-carboxy-delta(9)-tetrahydrocannabinol

**Semantic type:** Organic Chemical

**Definition:** An inactive, long-lasting metabolite of tetrahydrocannabinol (THC), which is the psychoactive component of cannabis. After consumption of cannabis, THC is metabolized to the active metabolite 11-hydroxy-THC (11-OH-THC) by liver enzymes and converted to 11-Nor-9-carboxy-delta(9)-tetrahydrocannabinol (11-COOH-THC) through oxidation in the liver. 11-COOH-THC can be used as a biomarker for THC exposure and 11-COOH-THC can be found in urine, blood, and hair.

**Synonyms:** - 11-COOH-THC - 11-NOR-9-CARBOXY-.DELTA.9-TETRAHYDROCANNABINOL - 11-Nor-9-carboxy-THC - 11-Nor-9-carboxy-delta(9)-THC - 11-Nor-delta(9)-tetrahydrocannabinol-9-carboxylic Acid - THC-COOH