688743-87-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 688743-87-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,8,7,4 and 3 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 688743-87:
(8*6)+(7*8)+(6*8)+(5*7)+(4*4)+(3*3)+(2*8)+(1*7)=235
235 % 10 = 5
So 688743-87-5 is a valid CAS Registry Number.
688743-87-5Relevant academic research and scientific papers
Anionic ring-contraction reaction of cyclic acetal system: Stereoselective approach to multi-functionalized oxetanes
Suzuki, Masaki,Tomooka, Katsuhiko
, p. 651 - 654 (2007/10/03)
The reaction of pantolactone derived bicyclic acetal 1 with alkyl lithiums provides 2,2,4-trisubstituted 3-hydroxy oxetane 2 with high diastereoselectivity.
