144344-90-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 144344-90-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,3,4 and 4 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 144344-90:
(8*1)+(7*4)+(6*4)+(5*3)+(4*4)+(3*4)+(2*9)+(1*0)=121
121 % 10 = 1
So 144344-90-1 is a valid CAS Registry Number.
144344-90-1Relevant articles and documents
Quinone methide from 4-hydroxybenzyl alcohol diacetate: (P-acetoxy)benzylation of β-dicarbonyls
Sanner, Mark A.,Stansberry, Mary,Weigelt, Carolyn,Michne, William F.
, p. 5287 - 5290 (2007/10/02)
Diacetate 1c is a readily available quinone methide equivalent when treated with Cs2CO3 for C-(p)-acetoxy)benzylation of β-dicarbonyls in 51-89 % yield.
