149400-69-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 149400-69-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,4,0 and 0 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 149400-69:
(8*1)+(7*4)+(6*9)+(5*4)+(4*0)+(3*0)+(2*6)+(1*9)=131
131 % 10 = 1
So 149400-69-1 is a valid CAS Registry Number.
149400-69-1Relevant articles and documents
A one-pot synthesis of functionalized 2,2-disubstituted 2H-1-benzopyrans
Cossy, Janine,Rakotoarisoa, Haja,Kahn, Philippe,Desmurs, Jean-Roger
, p. 9671 - 9674 (2007/10/03)
The synthesis of functionalized 2,2-disubstituted 2H-1-benzopyrans was achieved by condensing 2,3,5-trimethylhydroquinone (TMHQ) with α,β- unsaturated aldehydes or α,β-unsaturated acetals under acidic conditions.