5669-18-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5669-18-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,6 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 5669-18:
(6*5)+(5*6)+(4*6)+(3*9)+(2*1)+(1*8)=121
121 % 10 = 1
So 5669-18-1 is a valid CAS Registry Number.
5669-18-1Relevant academic research and scientific papers
Studies in Decarboxylation. Part 16. Steric Inhibition of Resonance in a 1,5-Sigmatropic Reaction
al-Borno, Amal,Bigley, David B.
, p. 1311 - 1312 (2007/10/02)
The rates of gas-phase decarboxylation of some 3-phenyl-substituted but-3-enoic acids are best rationalized in terms of steric inhibition of resonance in the more sterically crowded members.