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morpholine amide of 3-carboxy-2-butanone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

28637-50-5

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28637-50-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 28637-50-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,6,3 and 7 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 28637-50:
(7*2)+(6*8)+(5*6)+(4*3)+(3*7)+(2*5)+(1*0)=135
135 % 10 = 5
So 28637-50-5 is a valid CAS Registry Number.

28637-50-5Downstream Products

28637-50-5Relevant academic research and scientific papers

A New Route to 6-Azachromones. An Improved Synthesis of 2-Azaxanthone

Cordonnier, Guy,Sliwa, Henri

, p. 111 - 115 (2007/10/02)

Condensation of the morpholine enamine of 1-benzyl-4-piperidone with β-ketoesters yielded 6-azatetrahydrochromones which were debenzylated and aromatized to 6-azachromones; 2-azaxanthone has been thus obtained with an improved yield as compared to previous syntheses.

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