77509-83-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77509-83-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,5,0 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 77509-83:
(7*7)+(6*7)+(5*5)+(4*0)+(3*9)+(2*8)+(1*3)=162
162 % 10 = 2
So 77509-83-2 is a valid CAS Registry Number.
77509-83-2Relevant articles and documents
Palladium-catalyzed multiple arylation of thiophenes
Okazawa, Toru,Satoh, Tetsuya,Miura, Masahiro,Nomura, Masakatsu
, p. 5286 - 5287 (2007/10/03)
Secondary 2-thiophenecarboxamides efficiently undergo unique triarylation accompanied by formal decarbamoylation under palladium catalysis. 3-Substituted thiophenes, especially having an electron-withdrawing group, can also be triarylated. Copyright
