Benzophenone-3,3,4,4-tetracarboxylic acid
3,3',4,4'-Benzophenone Tetracarboxylic Acid
CAS: 2479-49-4
Molecular Formula: C17H10O9
Benzophenone-3,3,4,4-tetracarboxylic acid - Names and Identifiers
| Name | 3,3',4,4'-Benzophenone Tetracarboxylic Acid |
| Synonyms | BTA 4,4'-CARBONYLDIPHTHALIC ACID 4,4'-Carbonyldiphthalic Acid BENZOPHENONE TETRACARBOXYLIC ACID 4'-Benzophenonetetracarboxylic acid 3,3,4,4-Benzophenonetetracarboxylic Acid Benzophenone-3,3,4,4-tetracarboxylic acid 3,3',4,4'-BENZOPHENONETETRACARBOXYLIC ACID 3,3',4,4'-Benzophenone Tetracarboxylic Acid Benzophenone-3,3',4,4'-tetracarboxylic acid 4,4'-carbonyldibenzene-1,2-dicarboxylic acid 2-Benzenedicarboxylicacid,4,4'-carbonylbis-1 dimagnesium 4,4'-carbonyldibenzene-1,2-dicarboxylate tetrasodium 4,4'-carbonyldibenzene-1,2-dicarboxylate tetrapotassium 4,4'-carbonyldibenzene-1,2-dicarboxylate trisodium 4-(4-carboxy-3-carboxylatobenzoyl)benzene-1,2-dicarboxylate tripotassium 4-(4-carboxy-3-carboxylatobenzoyl)benzene-1,2-dicarboxylate Benzophenonetetracarboxylic acid(3,3',4,4'-Benzophenonetetracarboxylic acid) |
| CAS | 2479-49-4 |
| EINECS | 219-613-1 |
| InChI | InChI=1/C17H10O9.3Na/c18-13(7-1-3-9(14(19)20)11(5-7)16(23)24)8-2-4-10(15(21)22)12(6-8)17(25)26;;;/h1-6H,(H,19,20)(H,21,22)(H,23,24)(H,25,26);;;/q;3*+1/p-3 |
Benzophenone-3,3,4,4-tetracarboxylic acid - Physico-chemical Properties
| Molecular Formula | C17H10O9 |
| Molar Mass | 358.26 |
| Density | 1.645±0.06 g/cm3(Predicted) |
| Melting Point | 224 °C |
| Boling Point | 734.0±60.0 °C(Predicted) |
| Flash Point | 99 °C |
| Vapor Presure | 1.28E-22mmHg at 25°C |
| pKa | 2.43±0.10(Predicted) |
| Storage Condition | Sealed in dry,2-8°C |
| Physical and Chemical Properties | The melting point was 212 °c. |
| In vitro study | The kinetics of the photooxidation of aromatic amino acids histidine (His), tyrosine (Tyr), and tryptophan (Trp) by Benzophenonetetracarboxylic acid has been investigated in aqueous solutions using time-resolved laser flash photolysis and time-resolved chemically induced dynamic nuclear polarization. The pH dependence of quenching rate constants is measured within a large pH range. The chemical reactivities of free His, Trp, and Tyr and of their acetylated derivatives, N-AcHis, N-AcTyr, and N-AcTrp, toward Benzophenonetetracarboxylic acid triplets are compared to reveal the influence of amino group charge on the oxidation of aromatic amino acids. Thus, it has been established that the presence of charged amino group changes oxidation rates by a significant factor; i.e., His with a positively charged amino group quenches the Benzophenonetetracarboxylic acid triplets 5 times more effectively than N-AcHis and His with a neutral amino group. The efficiency of quenching reaction between the Benzophenonetetracarboxylic acid triplets and Tyr and Trp with a positively charged amino group is about 3 times as high as that of both Tyr and Trp with a neutral amino group, N-AcTyr and N-AcTrp. |
Benzophenone-3,3,4,4-tetracarboxylic acid - Preparation solution concentration reference
| 1mg | 5mg | 10mg | |
|---|---|---|---|
| 1 mM | 2.791 ml | 13.956 ml | 27.913 ml |
| 5 mM | 0.558 ml | 2.791 ml | 5.583 ml |
| 10 mM | 0.279 ml | 1.396 ml | 2.791 ml |
| 5 mM | 0.056 ml | 0.279 ml | 0.558 ml |
Last Update：2024-01-02 23:10:35
Benzophenone-3,3,4,4-tetracarboxylic acid - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Keto acid | Keto acid is a compound that contains both carboxyl and keto groups in the molecule. Keto acid is used to treat patients with chronic kidney disease (CKD), and its effect is to relieve the deposition of nitrogen-containing waste and other toxic substances in the body. There are two types of keto acids: α keto acids and β keto acids. ① α keto acid is a keto acid with a carboxyl group on the alpha carbon atom, that is, a keto acid with a ketone carbon atom and a carboxyl carbon atom directly connected. Pyruvate is the simplest α-keto acid. Pyruvate can be decomposed into acetaldehyde and carbon dioxide during alcohol fermentation. It can also be decomposed into acetyl-CoA and sulfur dioxide under the action of enzymes. There is a similar reaction in the tricarboxylic acid cycle. The use of strong sulfuric acid in the laboratory can disintegrate-CO-COOH weaker C- C bonds. Pyruvate, for example, can be decomposed into carbon monoxide and acetic acid in this reaction. Another typical reaction is the transamination reaction. In this reaction, an alpha keto acid obtains an amino group, and a glutamic acid loses an amino group without releasing ammonia. Through this reaction, pyruvic acid can be converted to alanine, oxaloacetic acid (which is both an α keto acid and β keto acid) is converted to aspartic acid, and a-ketoglutarate is converted to glutamic acid. ② There is a carbon atom between the carboxyl group and the ketone group of β keto acid. Beta keto acid is very unstable, it will automatically decarboxylate, this process occurs in the cell through the action of a catalyst. For example, the decarboxylation of oxaloacetate in the process of gluconeogenesis (the process by which organisms convert a variety of non-sugar substances into glucose or glycogen). |
| biological activity | Benzophenonetetracarboxylic acid (3,3 ',4,4'-Benzophenonetetracarboxylic acid) is especially suitable for preparing high-performance polyimide and can also be used as curing agent for epoxy resin. |
| use | this product is a monomer of ether polyimide. |
| production method | is obtained by condensation of o-xylene with formaldehyde and oxidation of nitric acid. |
Last Update：2024-04-10 22:29:15
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