91421-42-0

91421-42-0 structure

Name: rubitecan
Chemical Name: 9-Nitrocamptothecin
CAS Number: 91421-42-0
Molecular Formula: C₂₀H₁₅N₃O₆
Molecular Weight: 393.350
Catalog: API Antineoplastic agents Natural source antineoplastic agents
Create Date: 2018-06-01 08:00:00
Modify Date: 2025-08-25 10:31:46
Rubitecan (RFS 2000), a camptothecin derivative, is an orally active topoisomerase I inhibitor with broad antitumor activity, and induces protein-linked DNA single-strand breaks, thereby blocking DNA and RNA synthesis in dividing cells[1][2][3].

Name	9-Nitrocamptothecin
Synonyms	rubitecan MFCD06656294 1H-Pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione, 4-ethyl-4-hydroxy-10-nitro-, (4S)- PYRIDOXINE 3,4-DIPALMITATE 9-nitro-20(s)-camptothecin 1H-PYRANO[3',4':6,7]INDOLIZINO[1,2-B]QUINOLINE-3,14(4H,12H)-DIONE,4-ETHYL-4-HYDROXY-10-NITRO-, (4S)- (4S)-4-Ethyl-4-hydroxy-10-nitro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione Orathecin

Description	Rubitecan (RFS 2000), a camptothecin derivative, is an orally active topoisomerase I inhibitor with broad antitumor activity, and induces protein-linked DNA single-strand breaks, thereby blocking DNA and RNA synthesis in dividing cells[1][2][3].
Related Catalog	Research Areas >> Cancer Signaling Pathways >> Cell Cycle/DNA Damage >> Topoisomerase
Target	Topoisomerase I[1]
In Vitro	Rubitecan (RFS 2000) inhibits U-CH1, U-CH2, and CCL4 cells with IC50s 0.32, 0.83, and 7.7 µM, respectively[4].
References	[1]. Burris HA 3rd, et al. Phase II trial of oral rubitecan in previously treated pancreatic cancer patients. Oncologist. 2005 Mar;10(3):183-90. [2]. Rubitecan: 9-NC, 9-Nitro-20(S)-camptothecin, 9-nitro-camptothecin, 9-nitrocamptothecin, RFS 2000, RFS2000. Drugs R D. 2004;5(5):305-11. [3]. Rubitecan [4]. Xia M, et al. Identification of repurposed small molecule drugs for chordoma therapy. Cancer Biol Ther. 2013 Jul;14(7):638-47.

Personal Protective Equipment	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
RIDADR	NONH for all modes of transport
RTECS	UQ0493300