109334-31-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109334-31-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,3,3 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 109334-31:
(8*1)+(7*0)+(6*9)+(5*3)+(4*3)+(3*4)+(2*3)+(1*1)=108
108 % 10 = 8
So 109334-31-8 is a valid CAS Registry Number.
109334-31-8Relevant articles and documents
Wittig Ring Contraction. A New Route to Cembranoid Natural Products
Marshall, James A.,Jenson, Todd M.,DeHoff, Bradley S.
, p. 4316 - 4319 (1986)
A new route to the cembranoid skeleton is described wherein a 17-membered propargyl allyl ether is subjected to Wittig rearrangement to afford a 14-membered carbocyclic with substituents appropriate for elaboration to cembrane natural products.
