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r,2-Stilbenedicarboxylic anhydride, also known as 4,4'-stilbenedicarboxylic anhydride, is an organic compound with the chemical formula C14H8O3. It is a white crystalline solid that is derived from the oxidation of stilbene, a naturally occurring organic compound found in certain plants. This anhydride is a key intermediate in the synthesis of various pharmaceuticals, dyes, and polymers, such as polyethylene terephthalate (PET), which is widely used in the production of plastic bottles and fibers. Its chemical structure features a central benzene ring with two phenyl rings attached at opposite ends, and it contains two carbonyl groups that can react with other molecules to form esters or amides. The anhydride is known for its reactivity and is used in various chemical processes, including the preparation of liquid crystal materials and other specialty chemicals.

4090-71-5

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4090-71-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4090-71-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,0,9 and 0 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4090-71:
(6*4)+(5*0)+(4*9)+(3*0)+(2*7)+(1*1)=75
75 % 10 = 5
So 4090-71-5 is a valid CAS Registry Number.

4090-71-5Downstream Products

4090-71-5Relevant academic research and scientific papers

New highly diastereoselective Perkin/Michael addition domino reaction between homophthalic anhydride and aromatic aldehydes: A facile approach to blue-fluorescent dibenzo[c,h]chromenones

Bogdanov, Milen G.,Mitrev, Yavor,Tiritiris, Ioannis

scheme or table, p. 377 - 384 (2011/02/28)

A series of new trans-11-aryl-6-oxo-6H-dibenzo[c,h]chromene-12-carboxylic acids has been synthesised through anew Perkin/Michael addition domino reaction between homophthalic anhydride and aromatic aldehydes. The synthesis is straightforward and gives goo

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