87444-83-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87444-83-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,4,4 and 4 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 87444-83:
(7*8)+(6*7)+(5*4)+(4*4)+(3*4)+(2*8)+(1*3)=165
165 % 10 = 5
So 87444-83-5 is a valid CAS Registry Number.
87444-83-5Relevant academic research and scientific papers
A Convenient Synthesis of 2-Aryl-3-aroylbenzofurans
Durani, N.,Kapil, R. S.
, p. 489 - 490 (2007/10/02)
The rearrangement of 2-(p-hydroxy)phenyl-3-phenylbenzopyrylium chloride (1), catalysed by H2O2/H2SO4, furnishes 2-(p-hydroxy)phenyl-3-benzoylbenzofuran (2) which is methylated to 3, and then subjected to acid catalysed rearrangement to afford 4.The
