2186-81-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2186-81-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,8 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2186-81:
(6*2)+(5*1)+(4*8)+(3*6)+(2*8)+(1*1)=84
84 % 10 = 4
So 2186-81-4 is a valid CAS Registry Number.
2186-81-4Relevant 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.
