171734-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171734-91-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,7,3 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 171734-91:
(8*1)+(7*7)+(6*1)+(5*7)+(4*3)+(3*4)+(2*9)+(1*1)=141
141 % 10 = 1
So 171734-91-1 is a valid CAS Registry Number.
171734-91-1Relevant articles and documents
Heck Annulation on 2-Position of Indoles or 1H-Pyrrolopyridine
Desarbre, Eric,Merour, Jean-Yves
, p. 1987 - 1998 (2007/10/02)
1-Substituted 3-formylindoles lead to annulated indoloisoquinoline or pyrrolophenanthridine via palladium coupling.Under the same conditions 1-substituted 7-azaindoles afforded the 7-aza analogues.