34811-93-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 34811-93-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,8,1 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 34811-93:
(7*3)+(6*4)+(5*8)+(4*1)+(3*1)+(2*9)+(1*3)=113
113 % 10 = 3
So 34811-93-3 is a valid CAS Registry Number.
34811-93-3Relevant academic research and scientific papers
Epimerisation of 4-Acetoxyflavans and Flavan-4-ols
Attwood, Michael R.,Brown, Ben R.,Pike, William T.
, p. 2229 - 2236 (2007/10/02)
5,7,3',4'-Tetramethoxyflavan-4β-ol reacts at 0 deg C with pyridine, ang a trace of acetic acid to give the 4β-acetoxy derivative but at 90 deg C the 4α-acetoxyflavan is formed.Either acetate when equilibrated with this acetylating agent yields a mixture o
