186406-42-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 186406-42-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,6,4,0 and 6 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 186406-42:
(8*1)+(7*8)+(6*6)+(5*4)+(4*0)+(3*6)+(2*4)+(1*2)=148
148 % 10 = 8
So 186406-42-8 is a valid CAS Registry Number.
186406-42-8Relevant articles and documents
Improved synthesis of bis[p-(phenylethynyl)phenyl]hetarylenes
Keshtov,Rusanov,Belomoina,Mikitaev
, p. 1794 - 1796 (2007/10/03)
Bis[p-(phenylethynyl)phenyl]hetarylenes were synthesized in high yields by an improved method using cross-coupling between phenylacetylene and 4,4′-dibromobenzil followed by condensation of the 4,4′-di(phenylethynyl)benzil obtained with either o-phenylene