257953-70-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 257953-70-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,9,5 and 3 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 257953-70:
(8*2)+(7*5)+(6*7)+(5*9)+(4*5)+(3*3)+(2*7)+(1*0)=181
181 % 10 = 1
So 257953-70-1 is a valid CAS Registry Number.
257953-70-1Relevant academic research and scientific papers
Diastereoselective photocycloaddition of an axial chiral enamide
Bach, Thorsten,Schroeder, Juergen,Harms, Klaus
, p. 9003 - 9004 (2007/10/03)
The axial chiral enamide 3 was prepared from 2-t-butylaniline in two steps (58% overall yield). Its photocycloaddition to benzaldehyde yielded the oxetane 4a as the major product (62% de), the structure of which was elucidated by single X-ray crystallogra
