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144297-19-8

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144297-19-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 144297-19-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,2,9 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 144297-19:
(8*1)+(7*4)+(6*4)+(5*2)+(4*9)+(3*7)+(2*1)+(1*9)=138
138 % 10 = 8
So 144297-19-8 is a valid CAS Registry Number.

144297-19-8Downstream Products

144297-19-8Relevant articles and documents

Dimethylaminopyridine-supported graft polymer catalyst and its flow system

Okuno, Yoshinori,Isomura, Shigeki,Kamakura, Takahiro,Sano, Fumiaki,Tamahori, Kaoru,Goto, Takahiro,Hayashida, Takahiro,Kitagawa, Yuuichi,Fukuhara, Ami,Takeda, Kazuyoshi

, p. 1711 - 1715 (2015/06/02)

A new heterogeneous organocatalyst, graft polymer supported dimethylaminopyridine (g-DMAP), is developed. This catalyst has a flexible structure and comprises DMAP anchored to the polyethylene-graft-polyacrylic acid (PE-g-PAA). It exhibits higher activity than DMAP supported on polystyrene cross-linked with divinylbenzene and can be recovered in batch mode acetylation. The activity and stability of this catalyst allow its application in continuous flow systems. Continuous acetylation proceeds with excellent conversion, and a turnover number of 560 can be achieved using g-DMAP. Parallel fixed bed reactors were used to scale up the synthesis of this continuous flow system. Eight parallel fixed bed reactors displayed excellent conversion.

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