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1620683-57-9

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1620683-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1620683-57-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,6,8 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1620683-57:
(9*1)+(8*6)+(7*2)+(6*0)+(5*6)+(4*8)+(3*3)+(2*5)+(1*7)=159
159 % 10 = 9
So 1620683-57-9 is a valid CAS Registry Number.

1620683-57-9Relevant articles and documents

Design, synthesis and structure-activity relationships of novel 4-phenoxyquinoline derivatives containing pyridazinone moiety as potential antitumor agents

Zhou, Shunguang,Liao, Huimin,He, Chao,Dou, Yanan,Jiang, Mingyan,Ren, Lixiang,Zhao, Yanfang,Gong, Ping

, p. 581 - 593 (2014)

A series of novel 4-phenoxyquinoline derivatives containing pyridazinone moiety were synthesized and evaluated for their in vitro cytotoxic activity against five cancer cell lines (HT-29, H460, A549, MKN-45, and U87MG). Most of the compounds exhibited moderate-to-significant cytotoxicity and high selectivity against one or more cell lines. Compounds 15a, 20a, 15b, 15c, 20d, and 16e were further examined for their inhibitory activity against c-Met kinase. The most promising compound 15a (c-Met half-maximal inhibitory concentration [IC50] = 2.15 nM) showed remarkable cytotoxicity against HT-29, H460, and A549 cell lines with IC50 values of 0.10 μM, 0.13 μM, and 0.05 μM, respectively, and thus it was 1.5- to 2.3-fold more potent than foretinib. Their preliminary structure-activity relationships (SARs) studies indicate that electron-withdrawing groups on the terminal phenyl rings are beneficial for improving the antitumor activity.

Discovery of novel pyrrolo-pyridine/pyrimidine derivatives bearing pyridazinone moiety as c-Met kinase inhibitors

Wang, Lin Xiao,Liu, Xiaobo,Xu, Shan,Tang, Qidong,Duan, Yongli,Xiao, Zhen,Zhi, Jia,Jiang, Liwen,Zheng, Pengwu,Zhu, Wufu

, p. 538 - 551 (2017/11/01)

In continue to our previous research, eight series of pyrrolo[2,3-b]pyridine and pyrrolo[2,3-d]pyrimidine derivatives bearing pyridazinone moiety were designed, synthesized, and the in vitro antitumor activity was evaluated against four cancer cell lines (A549, HepG2, MCF-7 and PC-3). Some selected compounds (22f, 22g, 26c and 26e) were evaluated for the activity against c-Met kinase, and according to the results of kinase inhibitory activity, the compound 22g was further evaluated for other four tyrosine kinases (Flt-3, VEGFR-2, c-Kit and EGFR) to test the enzyme-based selectivity. The most promising compound 22g showed excellent activity than lead compound Foretinib against A549, HepG2, MCF-7 and PC-3 cell lines, with the IC50 values of 2.19 ± 0.45 μM, 1.32 ± 0.26 μM, 6.27 ± 1.04 μM and 4.63 ± 0.83 μM. The structure–activity relationships (SARs) and docking studies indicated that the pyrrolo[2,3-b]pyridine derivatives bearing 4-oxo-pyridazinone moiety was superior to the pyrrolo[2,3-d]pyrimidine derivatives bearing 6-oxo-pyridazinone moiety. What's more, the target compounds modified with X and Y (X = H, Y = H) were favorable to the activity. And electron drawing groups (EWGs) of 4-Cl-3CF3 on the aryl group show the best activity.

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