194221-03-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 194221-03-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,2,2 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 194221-03:
(8*1)+(7*9)+(6*4)+(5*2)+(4*2)+(3*1)+(2*0)+(1*3)=119
119 % 10 = 9
So 194221-03-9 is a valid CAS Registry Number.
194221-03-9Relevant articles and documents
A convenient synthesis of polysubstituted phenylphenols from substituted anilines
Maggiani, Alain,Tubul, Ariette,Brun, Pierre
, p. 631 - 633 (1997)
2' and 4'-Substituted arylfurans react with DMAD in the presence of Lewis acid to afford Diels-Alder adducts with good yields; a subsequent spontaneous or an acid-induced ?-elimination leads to polysubstituted phenylphenols.