176173-93-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 176173-93-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,6,1,7 and 3 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 176173-93:
(8*1)+(7*7)+(6*6)+(5*1)+(4*7)+(3*3)+(2*9)+(1*3)=156
156 % 10 = 6
So 176173-93-6 is a valid CAS Registry Number.
176173-93-6Relevant articles and documents
A new efficient synthesis of pyridines
De Kimpe, Norbert,Keppens, Marian,Fonck, Gwendolien
, p. 635 - 636 (1996)
Cyclic six-membered imines, i.e. 2,3,4,5-tetrahydropyridines, are efficiently converted under mild conditions into the corresponding pyridines by highly regioselective α, α-dichlorination with N-chlorosuccinimide (NCS) followed by double dehydrochlorination with methanolic bases.
