74517-64-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74517-64-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,5,1 and 7 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 74517-64:
(7*7)+(6*4)+(5*5)+(4*1)+(3*7)+(2*6)+(1*4)=139
139 % 10 = 9
So 74517-64-9 is a valid CAS Registry Number.
74517-64-9Relevant academic research and scientific papers
New Route for Synthesis of Linear Pyranoflavones
Ahluwalia, V. K.,Jain, Anjula,Prakash, Chandra,Bala, Shashi
, p. 101 - 103 (2007/10/02)
A convenient synthesis of linear pyranoflavone, viz 2,2-dimethyl-8-phenyl-2H,6H-benzodipyran-6-one(III) is described.The key steps in the synthesis of the title compounds are : (i) blocking the 8-position of appropriate 7-hydroxyflavone with
