139177-62-1 Usage
Chemical Properties
White to grey powder
Uses
Dysprosium(III) trifluoromethanesulfonate is a water-tolerant Lewis acid used in the Aldol reaction of silyl enol ethers with aldehydes. This is an effective catalyst for electrophilic substitution reactions of indoles with imines. Also used as catalyst for Aza-Piancatelli rearrangement, Friedel-Crafts alkylation, ring-opening polymerization reactions, microwave-assisted Kabachnik-Fields condensation, cycloaddition reactions (Lewis-acid catalyst), fries rearrangement and enantioselective glyoxalate-ene reactions.
General Description
Dysprosium(III) trifluoromethanesulfonate (Dysprosium(III) triflate) is a lanthanide triflate.
Check Digit Verification of cas no
The CAS Registry Mumber 139177-62-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,7 and 7 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139177-62:
(8*1)+(7*3)+(6*9)+(5*1)+(4*7)+(3*7)+(2*6)+(1*2)=151
151 % 10 = 1
So 139177-62-1 is a valid CAS Registry Number.
InChI:InChI=1/3CHF3O3S.Dy/c3*2-1(3,4)8(5,6)7;/h3*(H,5,6,7);/q;;;+3/p-3
