155688-13-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155688-13-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,6,8 and 8 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 155688-13:
(8*1)+(7*5)+(6*5)+(5*6)+(4*8)+(3*8)+(2*1)+(1*3)=164
164 % 10 = 4
So 155688-13-4 is a valid CAS Registry Number.
155688-13-4Relevant articles and documents
Construction of a Chiral Quaternary Carbon Center via 1,2-Acyl Migration of an Optically Active α,β-Epoxy Ketone
Okada, Kunisuke,Katsura, Toshiyuki,Tanino, Hideo,Kakoi, Hisae,Inoue, Shoji
, p. 157 - 160 (1994)
The construction of a chiral building block with a quaternary carbon center is described, based on the Lewis acid-catalyzed acyl migration of α,β-epoxy ketone with alkyl and alkenyl substituents.
