120491-87-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 120491-87-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,4,9 and 1 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 120491-87:
(8*1)+(7*2)+(6*0)+(5*4)+(4*9)+(3*1)+(2*8)+(1*7)=104
104 % 10 = 4
So 120491-87-4 is a valid CAS Registry Number.
120491-87-4Relevant articles and documents
Synthesis of 4-(Phenylethynyl)-2,6-bispyridine
Takalo, Harri,Pasanen, Paavo,Kankare, Jouko
, p. 373 - 377 (2007/10/02)
The synthesis of 4-(phenylethynyl)-2,6-bispyridine is described.Two separate routes were investigated to reach the key intermediate 4-bromo-2,6-bis(bromomethyl)pyridine.