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123735-34-2

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123735-34-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123735-34-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,7,3 and 5 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 123735-34:
(8*1)+(7*2)+(6*3)+(5*7)+(4*3)+(3*5)+(2*3)+(1*4)=112
112 % 10 = 2
So 123735-34-2 is a valid CAS Registry Number.

123735-34-2Relevant articles and documents

ENANTIOSELECTIVE SYNTHESIS OF (+)-KJELLMANIANONE

Chen, Bang-Chi,Weismiller, Michael C.,Davis, Franklin A.,Boschelli, Diane,Empfield, James R.,Smith, Amos B.

, p. 173 - 182 (2007/10/02)

An asymmetric synthesis of the highly oxygenated cyclopentanoid antibiotic (+)-kjellmanianone (1) has been achieved.The key step entailed enantioselective hydroxylation of the prochiral sodium enolate of β-keto ester 2 with the new, enatiomerically pure N-sulfonyloxaziridine 7b, affording 1 in 68.5percent ee (60percent yield).Possible transition state structures for the asymmetric oxidation are evaluated.

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