66294-58-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66294-58-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,2,9 and 4 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 66294-58:
(7*6)+(6*6)+(5*2)+(4*9)+(3*4)+(2*5)+(1*8)=154
154 % 10 = 4
So 66294-58-4 is a valid CAS Registry Number.
66294-58-4Relevant articles and documents
Novel Sulfonylation reagent: Sulfuric Acid-Hexafluoroacetic Anhydride
Tyobeka, Themba E.,Hancock, Richard A.,Weigel, Helmut
, p. 114 - 115 (2007/10/02)
A mixture of sulfuric acid and hexafluoroacetic anhydride is an efficient reagent for the sulfonylation of aromatic compounds.