Standards; Isotopic Labeled Analogues; Enzyme Activators and Inhibitors; Pharmaceutical/API Drug Impurities/Metabolites;
应用:
Labelled (R)-(-)-Camptothecin (C175145). Antitumor alkaloid. Binds irreversible to the DNVIP(LA)topoisomerase I complex, inhibiting the reassociation of DNA after cleavage by topoisomerase I and traps the enzyme in a covalent linkage with DNA. A cytotoxic antitumor agent.