5665-50-9 Usage
White crystalline solid
2,3-Phenanthrenedicarboxylic anhydride is a white solid with a crystalline structure.
Common precursor in polymer synthesis
2,3-Phenanthrenedicarboxylic anhydride is often used as a starting material in the production of various types of polyesters, polyimides, and other polymers.
Use in production of dyes and pigments
2,3-Phenanthrenedicarboxylic anhydride is also used in the production of dyes and pigments.
Potential applications in organic electronics
2,3-Phenanthrenedicarboxylic anhydride has been found to have unique electronic and optical properties that make it a potential candidate for use in organic electronics.
Irritation hazards
2,3-Phenanthrenedicarboxylic anhydride can be irritating to the skin, eyes, and respiratory system, so it should be handled with caution.
Check Digit Verification of cas no
The CAS Registry Mumber 5665-50-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,6 and 5 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 5665-50:
(6*5)+(5*6)+(4*6)+(3*5)+(2*5)+(1*0)=109
109 % 10 = 9
So 5665-50-9 is a valid CAS Registry Number.
5665-50-9Relevant articles and documents
The Preparation and Reactions of Naphthofuran and Naphthofuran
Smith, James G.,Dibble, Peter W.,Sandborn, Richard E.
, p. 3762 - 3768 (2007/10/02)
The syntheses of 1,3-dihydro-1- and 1,3-dihydro-3-hydroxynaphthofuran are described.Upon treatment with acid, these compounds undergo 1,4-elimination of water to generate the reactive naphthofuran, which is trapped in situ by a variety of dienophiles.Aromatization of the resulting adducts gives access to 2,3-disubstituted phenanthrenes or benzanthracenes.In addition, it has been shown that the hemiacetal, 1,3-dihydro-1-hydroxynaphthofuran, which exists in tautomeric equilibrium with 3-(hydroxymethyl)-2-naphthaldehyde, serves as a convenient source of naphthofuran.This furan can also be trapped by a variety of dienophiles.The resulting Diels-Alder adducts can be aromatized, giving substituted anthracenes.The use of aromatic 1,4-quinones as dienophiles leads to linear polycyclic aromatic quinones of four to seven rings.
