144889-74-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 144889-74-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,8,8 and 9 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 144889-74:
(8*1)+(7*4)+(6*4)+(5*8)+(4*8)+(3*9)+(2*7)+(1*4)=177
177 % 10 = 7
So 144889-74-7 is a valid CAS Registry Number.
144889-74-7Relevant academic research and scientific papers
A facile synthesis of unsymmetrical diaryl sulfones under triphase phase-transfer catalysis
Srinivasan,Kumar,Ayyangar
, p. 825 - 826 (2007/10/02)
Unsymmetrical diaryl sulfones having electron-withdrawing substituents have been synthesized from arenesulfonyl chlorides and activated 4-chloro-3-nitroarenes in excellent yield under triphase phase-transfer catalytic conditions.
