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1,2,3,4-Tetramethylcyclobutane-1,2,3,4-tetracarboxylic acid dianhydride, also known as TMCBTDA, is a cyclic organic compound with the molecular formula C12H12O6. It is a white crystalline solid that is insoluble in water but soluble in organic solvents. TMCBTDA is synthesized by the reaction of maleic anhydride with 1,2,3,4-tetramethylcyclobutane, resulting in a dianhydride structure. 1,2,3,4-Tetramethylcyclobutane-1,2,3,4-tetracarboxylic acid dianhydride is primarily used as a monomer in the production of high-performance polymers, such as polyimides and polyamides, due to its thermal stability, chemical resistance, and mechanical properties. It is also employed in the synthesis of various specialty chemicals and materials, including adhesives, coatings, and films. The use of TMCBTDA in these applications is attributed to its ability to form strong, heat-resistant polymers that maintain their integrity under extreme conditions.

7433-83-2

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7433-83-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7433-83-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,3 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 7433-83:
(6*7)+(5*4)+(4*3)+(3*3)+(2*8)+(1*3)=102
102 % 10 = 2
So 7433-83-2 is a valid CAS Registry Number.

7433-83-2Downstream Products

7433-83-2Relevant academic research and scientific papers

Photocycloaddition of 2-Benzoylthiophene to Methylmaleic Anhydrides

Rivas,Bolivar,Gonzalez,Machado,Vargas

, p. 529 - 536 (1996)

Upon direct irradiation with light of wavelengths greater than 300 nm, 2-benzoylthiophene undergoes [2 + 2] cycloadditions with mono- and di-methylmaleic anhydrides involving the C=C bond of the latter and the benzoyl-substituted thiophene C=C bond.

N-cyanoimides

-

, (2008/06/13)

Polyfunctional N-cyanoimides and their precursors and derivatives are disclosed along with methods for their preparation and interconversion. Also disclosed are curable compositions comprising the N-cyanoimides or poly(amide-cyanoamides) and reactive diluents as well as novel dianhydrides, polyimides, and poly(amide-cyanoamides) and methods for making them.

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