109690-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109690-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,6,9 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 109690-91:
(8*1)+(7*0)+(6*9)+(5*6)+(4*9)+(3*0)+(2*9)+(1*1)=147
147 % 10 = 7
So 109690-91-7 is a valid CAS Registry Number.
109690-91-7Relevant academic research and scientific papers
Lead Tetraacetate Oxidation of 4-Oximinoflavans
Kale, Arun V.,Berge, Diwakar D.
, p. 408 - 410 (2007/10/02)
4-Oximinoflavans (I) give the corresponding flavanones (II), flavones (III), 3-acetoxyflavonols (IV) and 3-acetoxydihydroflavonols (V) on oxidation with lead tetraacetate in dry benzene.The yields of the major products, flavanones (II) range between 24 and 36percent.
