87232-89-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87232-89-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,2,3 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 87232-89:
(7*8)+(6*7)+(5*2)+(4*3)+(3*2)+(2*8)+(1*9)=151
151 % 10 = 1
So 87232-89-1 is a valid CAS Registry Number.
87232-89-1Relevant academic research and scientific papers
Synthesis of 5,6,7,8-Tetramethoxy-3',4'-methylenedioxyisoflavone
Shaw, S. C.,Mandal, S. P.,Azad, R.
, p. 488 (2007/10/02)
Cyclisation of 2-hydroxy-3,4,5,6-tetramethoxyphenyl 3,4-methylenedioxybenzyl ketone (II) with ethyl formate in the presence of sodium metal affords the title isoflavone (I), identical with the natural sample.II has been prepared by the condensation of pen
