476653-40-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 476653-40-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,7,6,6,5 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 476653-40:
(8*4)+(7*7)+(6*6)+(5*6)+(4*5)+(3*3)+(2*4)+(1*0)=184
184 % 10 = 4
So 476653-40-4 is a valid CAS Registry Number.
476653-40-4Relevant academic research and scientific papers
Novel syntheses of 2,3-disubstituted benzothiophenes
Katritzky,Kirichenko,Ji, Yu,Prakash
, p. 156 - 164 (2007/10/03)
The sodium salts of o-sulfanylphenyl ketones 3a-g were treated with α-benzotriazol-1-ylalkyl chlorides 4a,b to give intermediates 5a-k in good yields. Compounds 5a-k, on treatment successively with LDA and Ti (0), gave benzothiophenes 7a-k.
