NCI Drug Dictionary

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The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

demeclocycline hydrochloride
The hydrochloride salt of demeclocycline, a broad-spectrum, tetracycline derivative exhibiting antimicrobial, aquaretic and chelating activities. In bacteria, demeclocycline binds reversibly to the 30S ribosomal subunit and blocks the binding of aminoacyl-tRNA to the A-site of the mRNA-ribosome complex, resulting in the inhibition of protein synthesis and bacterial cell death. In mammals, this agent interferes with the action of antidiuretic hormone (ADH) at the level of the renal collecting tubule, resulting in aquaresis. In addition, demeclocycline, which like other tetracyclines chelates calcium in bone and exhibits a yellow fluorescence under ultraviolet (UV) light, may be used as a fluorescent bone-labeling agent in bone histomorphometry. Check for active clinical trials using this agent. (NCI Thesaurus)
US brand name:Declomycin
Chemical structure:7-chloro-4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydroxy-1,11-dioxo-2-naphthacenecarboxamide monohydrochloride