134987-75-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134987-75-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,9,8 and 7 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 134987-75:
(8*1)+(7*3)+(6*4)+(5*9)+(4*8)+(3*7)+(2*7)+(1*5)=170
170 % 10 = 0
So 134987-75-0 is a valid CAS Registry Number.
134987-75-0Relevant articles and documents
Free radical cyclizations leading to four-membered rings. I. Betalactam production using tributyltin hydride
Fremont, Susan L.,Belletire, John L.,Ho, Douglas M.
, p. 2335 - 2338 (2007/10/02)
Use of HSnBu3 for the reductive cyclization of suitable enamides having a bromide substituent alpha to the carbonyl group affords beta-lactams in good yields.