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40777-50-2

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40777-50-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40777-50-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,7,7 and 7 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 40777-50:
(7*4)+(6*0)+(5*7)+(4*7)+(3*7)+(2*5)+(1*0)=122
122 % 10 = 2
So 40777-50-2 is a valid CAS Registry Number.

40777-50-2Relevant articles and documents

Catalytic Friedel-Crafts acylation: Magnetic nanopowder CuFe 2O4 as an efficient and magnetically separable catalyst

Parella, Ramarao,Naveen,Kumar, Amit,Babu, Srinivasarao Arulananda

, p. 1738 - 1742 (2013/03/28)

Catalytic regioselective Friedel-Crafts acylation of an array of anisoles/arenes with various acid chlorides using 5-20 mol % of magnetic nanopowder CuFe2O4 is reported. Unlike the conventional Friedel-Crafts reactions, which are catalyzed by moisture sensitive homogeneous catalysts/promoters, the nanopowder CuFe2O4 catalyst is moisture insensitive and the product/ketone-catalyst isolation is easily achieved using the magnetic properties of CuFe2O4.

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