69798-28-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 69798-28-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,7,9 and 8 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 69798-28:
(7*6)+(6*9)+(5*7)+(4*9)+(3*8)+(2*2)+(1*8)=203
203 % 10 = 3
So 69798-28-3 is a valid CAS Registry Number.
69798-28-3Relevant articles and documents
Diastereoselective zinc-catalyzed conjugate addition of alkynes
Knoepfel, Thomas F.,Boyall, Dean,Carreira, Erick M.
, p. 2281 - 2283 (2007/10/03)
The conjugate addition of in situ generated zinc alkynylides is reported. The use of chiral, ephedrine derived acceptors provides access to enantiomerically enriched β-alkynyl acids in good yields.
