177543-39-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 177543-39-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,5,4 and 3 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 177543-39:
(8*1)+(7*7)+(6*7)+(5*5)+(4*4)+(3*3)+(2*3)+(1*9)=164
164 % 10 = 4
So 177543-39-4 is a valid CAS Registry Number.
177543-39-4Relevant articles and documents
A preparative route to fused 4-hydroxy-3-phenylindeno(benzothieno)pyridin-2-ones
Genevois-Borella, Arielle,Vuilhorgne, Marc,Mignani, Serge
, p. 317 - 322 (2007/10/03)
Syntheses of fused 4-hydroxy-3-phenylindeno(benzothieno)-pyridin-2-one derivatives (1a,b) are described.
