341970-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 341970-40-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,1,9,7 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 341970-40:
(8*3)+(7*4)+(6*1)+(5*9)+(4*7)+(3*0)+(2*4)+(1*0)=139
139 % 10 = 9
So 341970-40-9 is a valid CAS Registry Number.
341970-40-9Relevant academic research and scientific papers
Synthesis of indeno[1,2-b]phenanthrene-type heterocycles by cycloaromatization of acyclic non-conjugated benzotetraynes
Miyawaki, Kazuhiro,Ueno, Fukuko,Ueda, Ikuo
, p. 887 - 900 (2007/10/03)
A novel and simple procedure for the preparation of 6-oxa-, 6-thia-, and 6-azaindeno[1,2-b]phenanthrenes (4) by thermal cycloaromatization of acyclic non-conjugated benzotetraynes (3) is described.
