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128217-37-8

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128217-37-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128217-37-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,2,1 and 7 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128217-37:
(8*1)+(7*2)+(6*8)+(5*2)+(4*1)+(3*7)+(2*3)+(1*7)=118
118 % 10 = 8
So 128217-37-8 is a valid CAS Registry Number.

128217-37-8Relevant articles and documents

Stereoselective Conjugate Addition of Organoaluminum Chlorides to α,β-Unsaturated Carboxylic Acid Derivatives

Rueck, Karola,Kunz, Horst

, p. 1018 - 1028 (2007/10/02)

Organoaluminum chlorides react smoothly with α,β-unsaturated N-acyloxazolidinones providing chiral β-branched carboxylic acid derivatives.An unexpected contrast between the mode of reaction of dimethylaluminum chloride and that of the higher homologues is observed.While diethylaluminum chloride and its higher homologues react with the acceptors at low temperature via a polar pathway, dimethylaluminum chloride requires activation by UV-light or radical initiation under otherwise identical conditions.With bicyclic oxazolidinones derived from galactosamine a high stereoselection is accomplished in the formation of the branched carboxylic acid derivative.

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