Carboxy-THC THC-COOH 11-COOH-THC 9-carboxy-THC 11-COOH-THC carboxy THC 9-carboxy-THC 9-carboxy-THC 11-COOH-THC Carboxy THC THC COOH 11 nor 9 carboxy THC 11-COOH-THC http://en.wikipedia.org/wiki/11-nor-9-Carboxy-THC carboxy-THC 11-COOH-THC 11-COOH-THC 11-COOH-THC THC-COOH Carboxy THC THC-COOH THC-COOH THC-COOH THC-COOH 9-carboxy-THC THC-COOH http://en.wikipedia.org/wiki/11-nor-9-Carboxy-THC THC-COOH http://en.wikipedia.org/wiki/11-nor-9-Carboxy-THC 11-COOH-THC 9-carboxy-THC THC-COOH