Fumarsaeure-bis-biphenylyl-⁽⁴⁾-ester, also known as Fumaryl bisphenyl ⁽⁴⁾-ester or Fumaryl bisphenyl ester, is a chemical compound derived from fumaric acid and bisphenol A. It is an organic ester with the molecular formula C₂₂H₁₈O₄. Fumarsaeure-bis-biphenylyl-⁽⁴⁾-ester is characterized by its ability to form a diester linkage between the two carboxyl groups of fumaric acid and the hydroxyl groups of bisphenol A. Fumaryl bisphenyl ⁽⁴⁾-ester is often used as a monomer in the production of polymers, particularly in the synthesis of polyetherketones and other high-performance plastics. It is valued for its thermal stability and mechanical properties, making it suitable for applications in various industries, including automotive, aerospace, and electronics.

1657-72-3

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Basic information
1. Product Name: Fumarsaeure-bis-biphenylyl-⁽⁴⁾-ester
2. Synonyms:
3. CAS NO:1657-72-3
4. Molecular Formula:
5. Molecular Weight: 420.464
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: Fumarsaeure-bis-biphenylyl-⁽⁴⁾-ester(CAS DataBase Reference)
10. NIST Chemistry Reference: Fumarsaeure-bis-biphenylyl-⁽⁴⁾-ester(1657-72-3)
11. EPA Substance Registry System: Fumarsaeure-bis-biphenylyl-⁽⁴⁾-ester(1657-72-3)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 1657-72-3(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 1657-72-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,5 and 7 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1657-72:
(6*1)+(5*6)+(4*5)+(3*7)+(2*7)+(1*2)=93
93 % 10 = 3
So 1657-72-3 is a valid CAS Registry Number.

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