940877-34-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 940877-34-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,0,8,7 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 940877-34:
(8*9)+(7*4)+(6*0)+(5*8)+(4*7)+(3*7)+(2*3)+(1*4)=199
199 % 10 = 9
So 940877-34-9 is a valid CAS Registry Number.
940877-34-9Relevant academic research and scientific papers
A new construction of 2-alkoxypyrans by an acylation-reductive cyclization sequence
Heumann, Lars V.,Keck, Gary E.
, p. 1951 - 1954 (2008/02/02)
A new convergent synthetic approach to a pyran motif common to many naturally occurring structures is described. In this approach, two fragments are joined by esterification, and a subsequent intramolecular reductive cyclization affords the 2-hydroxypyran.
