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188772-53-4

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188772-53-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188772-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,7,7 and 2 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 188772-53:
(8*1)+(7*8)+(6*8)+(5*7)+(4*7)+(3*2)+(2*5)+(1*3)=194
194 % 10 = 4
So 188772-53-4 is a valid CAS Registry Number.

188772-53-4Relevant articles and documents

Novel enantioselective synthesis of both enantiomers of furan-2-yl amines and amino acids

Demir, Ayhan S.,Sesenoglu, Oezge,Uelkue, Dincer,Arici, Cengiz

, p. 91 - 105 (2003)

A new enantioselective synthesis of furan-2-yl amines and amino acids is described, in which the key step is the oxazaborolidine-catalyzed enantioselective reduction of O-benzyl (E)- and (Z)-furan-2-yl ketone oximes to the corresponding chiral amines. The chirality of the furan-2-yl amines is fully controlled by the appropriate choice of the geometrical isomer of the O-benzyl oxime. Oxidation of the furan ring furnished amino acids in high yields.

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