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87322-21-2

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87322-21-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87322-21-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,3,2 and 2 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 87322-21:
(7*8)+(6*7)+(5*3)+(4*2)+(3*2)+(2*2)+(1*1)=132
132 % 10 = 2
So 87322-21-2 is a valid CAS Registry Number.

87322-21-2Relevant articles and documents

TOTAL SYNTHESIS OF ARTEANNUIN AND DEOXYARTEANNUIN

Xu Xing-Xiang,Zhu Jie,Huang Da-Zhong,Zhou Wei-Shan

, p. 819 - 828 (2007/10/02)

Arteannuin 1 is a new sesquiterpene lactone containing a peroxide linkage and is an antimalarial principle isolated from Artemisia annua L. .R(+)-Citronellal 5 as a starting material for the total synthesis was converted into 11R(-)-methyl dihydroarteannuinate 12 in 14 steps.The key intermediate 4 was obtained from compound 12 in 5 steps.The introduction of hydroperoxide in 4 by photooxidation followed by acid treatment gave 1.Hydroxylation of 4 with osmium tetraoxide afforded deoxyarteannuin 2.

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