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20107-46-4

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20107-46-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20107-46-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,1,0 and 7 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 20107-46:
(7*2)+(6*0)+(5*1)+(4*0)+(3*7)+(2*4)+(1*6)=54
54 % 10 = 4
So 20107-46-4 is a valid CAS Registry Number.

20107-46-4Relevant articles and documents

Synthesis and cancer chemopreventive activity of zapotin, a natural product from Casimiroa edulis

Maiti, Arup,Cuendet, Muriel,Kondratyuk, Tamara,Croy, Vicki L.,Pezzuto, John M.,Cushman, Mark

, p. 350 - 355 (2007)

An efficient method has been developed to synthesize zapotin (5,6,2′,6′-tetramethoxyflavone), a component of the edible fruit Casimiroa edulis, on a multigram scale. The synthesis utilizes a regioselective C-acylation of a dilithium dianion derived from a substituted o-hydroxyactophenone to afford a β-diketone intermediate that can be cyclized to zapotin in good overall yield, thus avoiding the inefficient Baker-Venkataraman rearrangement pathway. Zapotin was found to induce both cell differentiation and apoptosis with cultured human promyelocytic leukemia cells (HL-60 cells). In addition, the compound inhibits 12-O-tetrade-canoylphorbol 13-acetate (TPA)-induced ornithine decarboxylase (ODC) activity with human bladder carcinoma cells (T24 cells), and TPA-induced nuclear factor-kappa B (NF-κB) activity with human hepatocellular liver carcinoma cells (HepG2 cells). These data suggest that zapotin merits further investigation as a potential cancer chemopreventive agent.

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