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137138-52-4

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137138-52-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137138-52-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,1,3 and 8 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 137138-52:
(8*1)+(7*3)+(6*7)+(5*1)+(4*3)+(3*8)+(2*5)+(1*2)=124
124 % 10 = 4
So 137138-52-4 is a valid CAS Registry Number.

137138-52-4Relevant articles and documents

Dehydrozingerone, chalcone, and isoeugenol analogues as in vitro anticancer agents

Tatsuzaki, Jin,Bastow, Kenneth F.,Nakagawa-Goto, Kyoko,Nakamura, Seiko,Itokawa, Hideji,Lee, Kuo-Hsiung

, p. 1445 - 1449 (2008/12/21)

Twenty-eight compounds related to dehydrozingerone (1), isoeugenol (3), and 2-hydroxychalcone (4) were synthesized and evaluated in vitro against human tumor cell replication. Except for isoeugenol analogues 27-35, most compounds exhibited moderate or strong cytotoxic activity against KB, KB-VCR (a multidrug-resistant derivative), and A549 cell lines. In particular, chalcone 15 showed significant cytotoxic activity against the A549 cell line with an IC50 value of 0.6 μg/mL. Furthermore, dehydrozingerone analogue 11 and chalcones 16 and 17 showed significant and similar cytotoxic activity against both KB (IC50 values of 2.0, 1.0, and 2.0 μg/mL, respectively) and KB-VCR (IC50 values of 1.9, 1.0, and 2.0 μ/mL, respectively) cells, suggesting that they are not substrates for the P-glycoprotein drug efflux pump.

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