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42833-67-0

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42833-67-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42833-67-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,8,3 and 3 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 42833-67:
(7*4)+(6*2)+(5*8)+(4*3)+(3*3)+(2*6)+(1*7)=120
120 % 10 = 0
So 42833-67-0 is a valid CAS Registry Number.

42833-67-0Relevant articles and documents

Synthesis and biological evaluation of phenyl substituted polyoxygenated xanthone derivatives as anti-hepatoma agents

Dai, Ming,Yuan, Xing,Kang, Jian,Zhu, Zhi-Jun,Yue, Rong-Cai,Yuan, Hu,Chen, Bing-Yang,Zhang, Wei-Dong,Liu, Run-Hui,Sun, Qing-Yan

, p. 159 - 166 (2013/10/01)

A series of novel derivatives of phenyl substituted tetramethoxy xanthone were synthesized and evaluated for their in vitro cytotoxicity against human hepatocellular carcinoma (HCC) and non-tumor hepatic cells. Among these derivatives, compound 6 was more potent than positive control 5-fluorouracil (5-Fu) on QGY-7703 and SMMC-7721 cells with IC50 values of 6.27 μM, 7.50 μM and 15.56 μM, 14.55 μM, respectively. Furthermore, compounds 6, 14, 16, and 29 exhibited much better selectivity toward the normal hepatic cell line QSG-7701 than 5-Fu. Additionally, compound 6 significantly induced cell apoptosis in QGY-7703 cells. Our findings suggested that these phenylxanthone derivatives may hold promise as chemotherapeutic agents for the treatment of human HCC.

γ-Pyrone compounds. II: Synthesis and antiplatelet effects of tetraoxygenated xanthones

Lin,Liou,Ko,Teng

, p. 1109 - 1112 (2007/10/02)

Norathyriol and its analogues, 1,3,5,6-, 3,4,5,6-, 3,4,6,7- and 2,3,6,7- tetrahydroxyxanthone, were synthesized from benzophenone precursors by Friedel-Crafts acylation and subsequent base-catalyzed cyclization to eliminate methanol. Both 3,4,6,7- and 2,3,6,7-tetrahydroxyxanthone tetraacetate showed potent anti-platelet aggregation effects on arachidonic acid-induced platelet aggregation. 3,4,6,7-Tetrahydroxyxanthone tetraacetate and 1,3,5,6-tetrahydroxyxanthone showed potent and significant anti-platelet aggregation effects on collagen-induced platelet aggregation.

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