132277-40-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 132277-40-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,2,2,7 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 132277-40:
(8*1)+(7*3)+(6*2)+(5*2)+(4*7)+(3*7)+(2*4)+(1*0)=108
108 % 10 = 8
So 132277-40-8 is a valid CAS Registry Number.
132277-40-8Relevant academic research and scientific papers
SYNTHETIC STUDIES ON PARAHERQUAMIDE: SYNTHESIS OF THE 2H-1,5-BENZODIOXEPIN RING SYSTEM
Williams, Robert M.,Cushing, Timothy D.
, p. 6325 - 6328 (2007/10/02)
Various 2H-2,2-dimethyl-1,5-benzodioxepins have been synthesized en route to the oxindole moiety of paraherquamide (1).The key step is the 7-membered ring formation from prenylated catechols using either PhSeCl, N-PSP or m-CPBA/SnCl4.
