[CAS NO. 2479-49-4] Benzophenonetetracarboxylic acid
PRODUCTS SPECIFICATIONS [2479-49-4]
DESCRIPTION [2479-49-4]
Overview
| MDL | MFCD00020283 |
|---|---|
| Molecular Weight | 358.26 |
| Molecular Formula | C17H10O9 |
| SMILES | O=C(C1=CC=C(C(O)=O)C(C(O)=O)=C1)C2=CC=C(C(O)=O)C(C(O)=O)=C2 |
Summary
Benzophenonetetracarboxylic acid (3,3',4,4'-Benzophenonetetracarboxylic acid) is particularly useful in the preparation of high performance polyimides and also useful as curing agents for epoxy resins [1] .
In Vitro
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 [2] .
MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Appearance
Solid
Shipping
Room temperature in continental US; may vary elsewhere.
Storage
| Powder | -20°C | 3 years |
|---|---|---|
| 4°C | 2 years | |
| In solvent | -80°C | 6 months |
| -20°C | 1 month |
Solvent & Solubility
DMSO : 50 mg/mL ( 139.56 mM ; Need ultrasonic)
H 2 O : 10 mg/mL ( 27.91 mM ; Need ultrasonic)
Stock Solutions
| Concentration Solvent Mass | 1 mg | 5 mg | 10 mg |
|---|
| 1 mM | 2.7913 mL | 13.9563 mL | 27.9127 mL |
| 5 mM | 0.5583 mL | 2.7913 mL | 5.5825 mL |
| 10 mM | 0.2791 mL | 1.3956 mL | 2.7913 mL |
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1.
Add each solvent one by one: PBS
Solubility: 5 mg/mL (13.96 mM); Clear solution; Need ultrasonic
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2.
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3.
Add each solvent one by one: 10% DMSO >> 90% (20% SBE-β-CD in saline)
Solubility: ≥ 2.5 mg/mL (6.98 mM); Clear solution
-
4.
Add each solvent one by one: 10% DMSO >> 90% corn oil
Solubility: ≥ 2.5 mg/mL (6.98 mM); Clear solution
References
Synonyms