128562-04-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128562-04-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,5,6 and 2 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 128562-04:
(8*1)+(7*2)+(6*8)+(5*5)+(4*6)+(3*2)+(2*0)+(1*4)=129
129 % 10 = 9
So 128562-04-9 is a valid CAS Registry Number.
128562-04-9Relevant articles and documents
DIASTEREOSELECTIVITY IN THE CYCLIZATION OF 1-(2-(BENZYLOXYMETHYL)-3-BUTENYL)-5-ETHOXY-2-PYRROLIDINONES
Zonjee, Johannes N.,Koning, Henk de,Speckamp, W. Nico
, p. 7553 - 7564 (1989)
1-(2-(Benzyloxymethyl)-3-butenyl)-5-ethoxy-2-pyrrolidinones 12 cyclize upon formic acid treatment to indolizinones.The effect of some substituents α to the iminium carbon atom on the diastereoselectivity of the cyclization is discussed.
