144969-82-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 144969-82-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,9,6 and 9 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 144969-82:
(8*1)+(7*4)+(6*4)+(5*9)+(4*6)+(3*9)+(2*8)+(1*2)=174
174 % 10 = 4
So 144969-82-4 is a valid CAS Registry Number.
144969-82-4Relevant articles and documents
Synthesis of biologically active [2.2]paracyclophanes
Aly,Hassan,Mourad,Hopf
, p. 625 - 628 (1992)
Claisen reaction of 4-acetyl[2.2]paracyclophane (1) with ethyl acetate and diethyl oxalate affords 4-acetoacetyl[2.2]paracyclophane (2) and ethyl(4-oxaloacetyl[2.2]paracyclophane) (6), respectively. Reaction of 2 and 6 with hydrazines and CuCl2