111875-63-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 111875-63-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,8,7 and 5 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 111875-63:
(8*1)+(7*1)+(6*1)+(5*8)+(4*7)+(3*5)+(2*6)+(1*3)=119
119 % 10 = 9
So 111875-63-9 is a valid CAS Registry Number.
111875-63-9Relevant articles and documents
An Improved Method for Preparing Dibenzo Crown Ethers
Kotlyar,Gorodnyuk,Grigorash,Chuprin
, p. 1135 - 1138 (2007/10/03)
In synthesis of symmetrical and unsymmetrical dibenzo crown ethers, the use of dimethyl sulfoxide as a solvent in cyclization allows an increase in the yields, a significant reduction in the reaction time, and simplification of refining.