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28989-51-7

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28989-51-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 28989-51-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,9,8 and 9 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 28989-51:
(7*2)+(6*8)+(5*9)+(4*8)+(3*9)+(2*5)+(1*1)=177
177 % 10 = 7
So 28989-51-7 is a valid CAS Registry Number.

28989-51-7Downstream Products

28989-51-7Relevant articles and documents

Highly efficient heterogeneous copper-catalysed coupling of oxime acetates with isothiocyanates leading to 2-aminothiazoles

Tuo, Yuxink,Yao, Fang,Liao, Yang,Cai, Mingzhong

, p. 225 - 229 (2017/06/20)

The heterogeneous coupling reaction of oxime acetates with isothiocyanates was achieved at 110°C in toluene in air in the presence of a bidentate nitrogen-functionalised MCM-41-immobilised copper(I) complex (MCM-41-2N-CuI) with Cs2CO3 as base to afford a variety of 2-aminothiazoles in good yields. The MCM-41-2N-CuI catalyst can be easily recovered by a simple filtration and reused at least eight times without significant loss of activity.

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