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120020-67-9

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120020-67-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 120020-67-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,0,2 and 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 120020-67:
(8*1)+(7*2)+(6*0)+(5*0)+(4*2)+(3*0)+(2*6)+(1*7)=49
49 % 10 = 9
So 120020-67-9 is a valid CAS Registry Number.

120020-67-9Downstream Products

120020-67-9Relevant articles and documents

Antimalarial activity of new water-soluble dihydroartemisinin derivatives. 2. Stereospecificity of the ether side chain

Lin,Lee,Klayman

, p. 1249 - 1252 (2007/10/02)

A new series of hydrolytically stable and water-soluble dihydroartemisinin derivatives with optically active side chains was prepared as potential antimalarial agents. This was an effort to prepare compounds with activity superior to that of artelinic acid and to examine the impact of the stereospecificity of the introduced alkyl side chain on biological properties. The ester derivatives possess superior in vitro activity to artemisinin, artemether, and arteether against two strains of Plasmodium falciparum (D-6 and W-2); however, conversion of the esters to their corresponding acids drastically reduces their antimalarial activity. None of the new acids possess in vitro antimalarial activity superior to that of artelinic acid. Although there appears to be limited stereospecificity for antimalarial activity among the acids (7a-d) tested, significant differences in antimalarial activity was seen among the esters.

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