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chromomycin A3 A glycosidic antineoplastic antibiotic isolated from the bacterium Streptomyces griseus. Chromomycin A3 reversibly binds to guanine-cytosine (G-C) base pairs in the minor groove of DNA, thereby inhibiting RNA synthesis. This agent is used as a fluorescent chromosome dye. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
![](https://webarchive.library.unt.edu/web/20090509210209im_/http://www.cancer.gov/images/spacer.gif)
Synonyms: | ![](https://webarchive.library.unt.edu/web/20090509210209im_/http://www.cancer.gov/images/spacer.gif) | aburamycin B antibiotic B 599 toyomycin | | ![](https://webarchive.library.unt.edu/web/20090509210209im_/http://www.cancer.gov/images/spacer.gif) | Chemical structure names: | ![](https://webarchive.library.unt.edu/web/20090509210209im_/http://www.cancer.gov/images/spacer.gif) | - 3B-O-(4-O-acetyl-2,6-dideoxy-3-C-methyl-alpha-L-arabino-hexopyranosyl)-7-methylolivomycin D
- olivomycin D, 3B-O-(4-O-Acetyl-2, 6-dideoxy-3-C-methyl-.alpha.-L-arabino-hexopyranosyl)-7-methyl- (9CI)
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