21066-72-8 Usage
Chemical Description
Diethyl tartrate is a chiral organic solute, while r-2-phenylcyclohexanol and ibuprofen are other chiral organic solutes.
Check Digit Verification of cas no
The CAS Registry Mumber 21066-72-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,6 and 6 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21066-72:
(7*2)+(6*1)+(5*0)+(4*6)+(3*6)+(2*7)+(1*2)=78
78 % 10 = 8
So 21066-72-8 is a valid CAS Registry Number.
21066-72-8Relevant articles and documents
Boric acid catalyzed chemoselective esterification of α- hydroxycarboxylic acids
Houston, Todd A.,Wilkinson, Brendan L.,Blanchfield, Joanne T.
, p. 679 - 681 (2007/10/03)
Boric acid catalyzes the selective esterification of α- hydroxycarboxylic acids without causing significant esterification to occur with other carboxylic acids. The procedure is simple, high-yielding, and applicable to the esterification of α-hydroxy carboxylates in the presence of other carboxylic acids including β-hydroxyacids within the same molecule.
