219783-14-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219783-14-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,7,8 and 3 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 219783-14:
(8*2)+(7*1)+(6*9)+(5*7)+(4*8)+(3*3)+(2*1)+(1*4)=159
159 % 10 = 9
So 219783-14-9 is a valid CAS Registry Number.
219783-14-9Relevant articles and documents
Asymmetric aldol reactions with (+)-(S,S)-pseudoephedrine. Stereoselective synthesis of α-methyl β-hydroxy esters
Vicario, Jose L.,Badia, Dolores,Dominguez, Esther,Carrillo, Luisa
, p. 9267 - 9270 (1998)
A new methodology for performing aldol reactions with an excellent degree of enantio- and diastereoselectivity was developed employing (+)- (S,S)-pseudoephedrine as chiral auxiliary.