189456-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189456-74-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,4,5 and 6 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 189456-74:
(8*1)+(7*8)+(6*9)+(5*4)+(4*5)+(3*6)+(2*7)+(1*4)=194
194 % 10 = 4
So 189456-74-4 is a valid CAS Registry Number.
189456-74-4Relevant articles and documents
Diastereoselective synthesis of glycosyl-α-aminoacids
Bouifraden, Samira,Lavergne, Jean-Pierre,Martinez, Jean,Viallefont, Philippe,Riche, Claude
, p. 949 - 955 (1997)
Asymmetric synthesis of various glycosyl-α-aminoacids is described. The approach involves the diastereoselective condensation of glycine enolates on the carbonyl in position 3 of the suitably protected α-D-ribohexofuranos-3-ulose.