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141039-66-9

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141039-66-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 141039-66-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,0,3 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 141039-66:
(8*1)+(7*4)+(6*1)+(5*0)+(4*3)+(3*9)+(2*6)+(1*6)=99
99 % 10 = 9
So 141039-66-9 is a valid CAS Registry Number.

141039-66-9Downstream Products

141039-66-9Relevant articles and documents

Synthesis of (+)-Artemisinin and (+)-Deoxoartemisinin from arteannuin B and arteannuic acid

Nowak, Deanne M.,Lansbury, Peter T.

, p. 319 - 336 (2007/10/03)

(+)-Artemisinin and (+)-Deoxoartemisinin were prepared for the first time from arteannuin B. The synthetic route is short and efficient, making use of the prior art for the final photo-oxygenation/cyclization reaction. A convergent route to each of the above-named products from arteannuic acid is also described. A novel oxidative lactonization reaction was developed for this sequence.

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