1271193-53-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1271193-53-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,1,1,9 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1271193-53:
(9*1)+(8*2)+(7*7)+(6*1)+(5*1)+(4*9)+(3*3)+(2*5)+(1*3)=143
143 % 10 = 3
So 1271193-53-3 is a valid CAS Registry Number.
1271193-53-3Relevant academic research and scientific papers
Generation of medium-ring cycloalkynes by ring expansion of vinylogous acyl triflates
Tummatorn, Jumreang,Dudley, Gregory B.
, p. 1572 - 1575 (2011/04/26)
Reductive cyclization of aryl and vinyl iodides tethered to vinylogous acyl triflates (VATs) induces a ring-expanding fragmentation to provide cyclic alkynyl ketones, including strained nine-membered cycloalkynes, in fair to excellent yield. The tandem cy
