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1103686-40-3

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1103686-40-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1103686-40-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,0,3,6,8 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1103686-40:
(9*1)+(8*1)+(7*0)+(6*3)+(5*6)+(4*8)+(3*6)+(2*4)+(1*0)=123
123 % 10 = 3
So 1103686-40-3 is a valid CAS Registry Number.

1103686-40-3Downstream Products

1103686-40-3Relevant articles and documents

Selective 1,3-cycloboronation of enantiopure 1,1,4,4-tetrasubstituted butanetetraols: versatile preparation, structural characterization, and properties of chiral cyclic boron-containing bifunctional Lewis acids

Shan, Zixing,Hu, Xiaoyun,Zhou, Yan,Peng, Xitian,Yi, Jing

experimental part, p. 1445 - 1450 (2009/12/01)

The selective cycloboronation of enantiopure 1,1,4,4-tetrasubstituted butanetetraols was investigated, and a general preparation of chiral cyclic boron-containing bifunctional Lewis acids was discovered. Compounds (2R,3R)- or (2S,3S)-1,1,4,4-tetrasubstituted butanetetraols were reacted with ArB(OH)2 at reflux in toluene, or THF, or under solvent-free condition to furnish tricoordinated, chiral bicyclo[4.4.0]diboronic esters in high yield via selective 1,3-cycloboronation. Structural characterization and properties of the novel chiral boron compounds are also reported.

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