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1253934-12-1

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1253934-12-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1253934-12-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,3,9,3 and 4 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1253934-12:
(9*1)+(8*2)+(7*5)+(6*3)+(5*9)+(4*3)+(3*4)+(2*1)+(1*2)=151
151 % 10 = 1
So 1253934-12-1 is a valid CAS Registry Number.

1253934-12-1Downstream Products

1253934-12-1Relevant articles and documents

Synthesis and antitumour activity of β-hydroxyisovalerylshikonin analogues

Rao, Zhen,Liu, Xin,Zhou, Wen,Yi, Jing,Li, Shao-Shun

experimental part, p. 3934 - 3941 (2011/11/12)

A series of novel β-hydroxyisovalerylshikonin analogues bearing oxygen-containing substituents at the side-chain hydroxyl of shikonin were designed and synthesized. The cytotoxicities of these compounds were evaluated in vitro against multi-drug resistant (MDR) cell lines DU-145 and HeLa. Most compounds exhibited significant inhibitory activity on both cell lines. The structure-activity relationship showed the analogues with ether substituents displayed the most potent antitumour activity and selective cytotoxicity towards DU-145. Among the compounds with ether substituents, increasing the steric hindrance in the carbon bearing β-hydroxyl or replace the β-hydroxyl with acetoxy or methoxy would lead to the decline of cytotoxicity.

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