197359-70-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 197359-70-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,3,5 and 9 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 197359-70:
(8*1)+(7*9)+(6*7)+(5*3)+(4*5)+(3*9)+(2*7)+(1*0)=189
189 % 10 = 9
So 197359-70-9 is a valid CAS Registry Number.
197359-70-9Relevant academic research and scientific papers
General synthesis of polysubstituted benzo[b]furans
Katritzky, Alan R.,Fali, Clara N.,Li, Jianqing
, p. 8205 - 8209 (2007/10/03)
2-(Benzotriazol-1-ylmethyl)furans 4a-c, on treatment with n-BuLi followed by various α,β-unsaturated ketones and aldehydes, gave the adducts 6a-f which underwent intramolecular cyclization to form substituted benzo[b]furans 10a-f. Lithiation and subsequen
