128440-94-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128440-94-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,4,4 and 0 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 128440-94:
(8*1)+(7*2)+(6*8)+(5*4)+(4*4)+(3*0)+(2*9)+(1*4)=128
128 % 10 = 8
So 128440-94-8 is a valid CAS Registry Number.
128440-94-8Relevant articles and documents
Dimerization of 3,4-disubstituted cinnamic acids and esters
Al-Farhan,Keehn,Stevenson
, p. 959 - 961 (1992)
Cinnamic (3-phenylpropenoic) acids and esters bearing hydroxy and/or alkoxy groups at C-3 and C-4 on the benzene ring, 1 undergo cyclodimerization on treatment with trifluoroacetic acid to yield the corresponding [t-3-aryl-c-2-carboxy[or alkoxycarbonyl]-r
