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1403608-13-8

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1403608-13-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1403608-13-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,0,3,6,0 and 8 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1403608-13:
(9*1)+(8*4)+(7*0)+(6*3)+(5*6)+(4*0)+(3*8)+(2*1)+(1*3)=118
118 % 10 = 8
So 1403608-13-8 is a valid CAS Registry Number.

1403608-13-8Relevant articles and documents

Asymmetric total syntheses of cochliomycin A and zeaenol

Jana, Nandan,Nanda, Samik

, p. 4313 - 4320 (2012/09/22)

The first asymmetric total syntheses of two resorcylic acid lactones (RALs) - cochliomycin A and zeaenol - have been achieved in a divergent way. The main highlight of our strategy involves successful application of stereoselecive Keck allylation and Julia-Kocienski olefination to access an advanced intermediate, by starting from L-tartaric acid as a chiral pool compound. This intermediate is coupled with a trisubstituted benzoic acid to afford a common RCM precursor for both target molecules. Ring-closing metathesis at a late stage, followed by functional group manipulation, yielded the target molecules in an efficient way. Two resorcylic acid lactones (RALs) - cochliomycin A and zeaenol - have been synthesized for the first time by an enantiodivergent route from the common chiral pool compound L-tartaric acid. Copyright

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