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1042093-91-3

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1042093-91-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1042093-91-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,4,2,0,9 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1042093-91:
(9*1)+(8*0)+(7*4)+(6*2)+(5*0)+(4*9)+(3*3)+(2*9)+(1*1)=113
113 % 10 = 3
So 1042093-91-3 is a valid CAS Registry Number.

1042093-91-3Downstream Products

1042093-91-3Relevant academic research and scientific papers

A general strategy for construction of both 2,6-cis- and 2,6-trans-disubstituted tetrahydropyrans: Substrate-controlled asymmetric total synthesis of (+)-scanlonenyne

Lee, Hyunjoo,Kim, Kwan Woo,Park, Janghyun,Kim, Hyoungsu,Kim, Sanghee,Kim, Deukjoon,Hu, Xiangqian,Yang, Weitao,Hong, Jiyong

supporting information; experimental part, p. 4200 - 4203 (2009/03/12)

(Chemical Equation Presented) A synthetic three-ring circus: The asymmetric total synthesis of (+)-scanlonenyne includes a sequential epimerization and intramolecular hetero-Michael addition for the construction of pyrano-γ-lactones (see scheme; DBU: 1,8-diazabicyclo[5.4.0]undec-7-ene), a highly efficient one-carbon homologation/bromination strategy, and a Weinreb ketone synthesis/cross-metathesis protocol for the elaboration of a sensitive side chain.

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