163771-03-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 163771-03-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,3,7,7 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 163771-03:
(8*1)+(7*6)+(6*3)+(5*7)+(4*7)+(3*1)+(2*0)+(1*3)=137
137 % 10 = 7
So 163771-03-7 is a valid CAS Registry Number.
163771-03-7Relevant academic research and scientific papers
Synthesis of substituted 2,3,5,6-tetraarylbenzo[1,2-b:5,4-b']difurans
Abdul-Aziz,Auping,Meador
, p. 1303 - 1308 (2007/10/02)
A series of substituted 2,3,5,6-tetraarylbenzo[1,2-b:5,4-b']difurans 1 was synthesized. This synthesis is based upon the photocyclization of 2,5-dibenzoylresorcinol dibenzyl ethers to the corresponding tetrahydrobenzo[1,2-b:5,4-b']difurans. Treatment of t
