77708-33-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77708-33-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,7,0 and 8 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 77708-33:
(7*7)+(6*7)+(5*7)+(4*0)+(3*8)+(2*3)+(1*3)=159
159 % 10 = 9
So 77708-33-9 is a valid CAS Registry Number.
77708-33-9Relevant academic research and scientific papers
Synthesis of Some 2-(2'-Thienoyl)Coumaran-3-Ones
Rangachari, K.,Mazumdar, A. K. D.,Banerji, K. D.
, p. 1014 - 1016 (2007/10/02)
Synthesis of 2-(2'-Thienoyl)coumaran-3-one and its 7-methyl, 5-methyl, 5-chloro, 7-methyl-5-bromo, 5-methyl-7-bromo derivatives from two routes have been described.In one, the corresponding 2-(2'-thienoyloxy)acetophenones have been brominated using CuBr2,
