648434-05-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 648434-05-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,8,4,3 and 4 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 648434-05:
(8*6)+(7*4)+(6*8)+(5*4)+(4*3)+(3*4)+(2*0)+(1*5)=173
173 % 10 = 3
So 648434-05-3 is a valid CAS Registry Number.
648434-05-3Relevant articles and documents
A convenient access to 3-cyanoflavones
Lassagne, Frédéric,Pochat, Francis
, p. 9283 - 9285 (2003)
Reaction of β-bromo α-alkylthiocinnamonitriles with various substituted methyl salicylates followed by treatment with AlCl 3/PhNO2 provides 3-cyanoflavones.