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331943-78-3

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331943-78-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 331943-78-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,9,4 and 3 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 331943-78:
(8*3)+(7*3)+(6*1)+(5*9)+(4*4)+(3*3)+(2*7)+(1*8)=143
143 % 10 = 3
So 331943-78-3 is a valid CAS Registry Number.

331943-78-3Downstream Products

331943-78-3Relevant articles and documents

Synthesis of the racemate of the stereoisomer at C-6a of BE-40644, a bioactive metabolite of Actinoplanes sp. with a sesquiterpene-substituted p-benzoquinone structure.

Tsujimori,Mori

, p. 167 - 171 (2007/10/03)

BE-40644 is a tetracyclic metabolite of Actinoplanes sp. A 40644 possessing a sesquiterpene-substituted p-benzoquinone structure with cis-fused B/C ring stereochemistry that inhibits the human thioredoxin system as the well as the growth of several cancer cell lines. Its B/C trans-fused stereoisomer at C-6a was synthesized as a racemate starting from geranylacetone and 3,5-dihydroxybenzoic acid.

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