843-66-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 843-66-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,4 and 3 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 843-66:
(5*8)+(4*4)+(3*3)+(2*6)+(1*6)=83
83 % 10 = 3
So 843-66-3 is a valid CAS Registry Number.
843-66-3Relevant articles and documents
Ionic liquid-assisted synthesis of trinitroethyl esters
Sheremetev, Aleksei B.,Yudin, Igor L.,Suponitsky, Kirill Yu.
, p. 264 - 266 (2006)
The first, highly efficient esterification of 2,2,2-trinitroethanol with alkanoyl, cycloalkanoyl, aroyl and hetaroyl chloride promoted by simple ionic liquids is described; trinitroethyl esters were characterised by X-ray crystallography.
