138610-53-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138610-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,1 and 0 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 138610-53:
(8*1)+(7*3)+(6*8)+(5*6)+(4*1)+(3*0)+(2*5)+(1*3)=124
124 % 10 = 4
So 138610-53-4 is a valid CAS Registry Number.
138610-53-4Relevant articles and documents
Catalytic Ability of Octopus-Type Calixarene in the Formation of Esters from Alkyl Halides and Alkyli Metal Carboxylates
Nomura, Eisaku,Taniguchi, Hisaji,Kawaguchi, Kouichi,Otsuji, Yoshio
, p. 2167 - 2170 (1991)
5,11,17,23,29,35-Hexa-p-tert-butyl-37,38,39,40,41,42-hexakis(3,6,9-trioxadecyloxy)calixarene efficiently catalyzes the reaction of alkyl halides with alkali metal carboxylates to produce esters.
