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1664-58-0

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1664-58-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1664-58-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,6 and 4 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1664-58:
(6*1)+(5*6)+(4*6)+(3*4)+(2*5)+(1*8)=90
90 % 10 = 0
So 1664-58-0 is a valid CAS Registry Number.

1664-58-0Relevant articles and documents

Heck arylation of conjugated alkenes with aryl bromides or chlorides catalyzed by immobilization of palladium in MCM-41

Yao, Fang,Liu, Jiaqin,Cai, Mingzhong

, p. 681 - 686 (2013)

A new 3-(2-aminoethylamino)propyl-functionalized MCM-41-immobilized palladium(II) complex [MCM-41-2N-PdCl2] was conveniently synthesized from commercially available and cheap 3-(2-aminoethylamino) propyltrimethoxysilane via immobilization on MCM-41, followed by reacting with palladium chloride. It was found that this heterogeneous palladium complex is a highly efficient catalyst for Heck arylation of conjugated alkenes with aryl bromides or chlorides using tetrabutylammonium bromide as additive and can be reused for at least six consecutive trials without any decreases in activity.

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