143308-63-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143308-63-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,3,0 and 8 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 143308-63:
(8*1)+(7*4)+(6*3)+(5*3)+(4*0)+(3*8)+(2*6)+(1*3)=108
108 % 10 = 8
So 143308-63-8 is a valid CAS Registry Number.
143308-63-8Relevant academic research and scientific papers
Direct N9-arylation of purines with aryl halides
Larsen, Anders Foller,Ulven, Trond
supporting information, p. 4997 - 4999 (2014/05/06)
An efficient method for N-arylation of purines is reported. The N-arylation is catalysed by Cu(i) and 4,7-bis(2-hydroxyethylamino)-1,10-phenanthroline (BHPhen) in aqueous DMF or ethanol. The reaction generally proceeds with high selectivity for the N
