Phenyl-4-aminosalicylate
- CAS NO.:133-11-9
- Empirical Formula: C13H11NO3
- Molecular Weight: 229.23
- MDL number: MFCD00007788
- EINECS: 205-092-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-05-04 17:34:33
What is Phenyl-4-aminosalicylate ?
Chemical properties
WHITE POWDER
Originator
Pheny-Pas-Teb-Amin ,Purdue Frederick, US,1959
The Uses of Phenyl-4-aminosalicylate
Antibacterial(tuberculostatic).
The Uses of Phenyl-4-aminosalicylate
Phenyl 4-Aminosalicylate is a reactant in the synthesis of p-aminosalicylic ester imines with antitubercular activity.
Definition
ChEBI: 4-amino-2-hydroxybenzoic acid phenyl ester is a carbonyl compound.
Manufacturing Process
183 g of p-nitrosalicylic acid are dissolved in 564 g of phenol by heating to 140°C to 150°C on an oil bath. When all the p-nitrosalicylic acid is dissolved, 153 g of phosphorus oxychloride are run in, drop by drop, over a period of about 2 hours, while maintaining the temperature at about 150°C. The still warm mixture is run into 2 liters of water with agitation. The precipitate formed is filtered off, washed with water until phenol is removed and then dried.
There are thus obtained 250 g of 2-hydroxy-4-nitrophenylbenzoate which melts at 154°C to 155°C.
In a hydrogenation autoclave are introduced 92 g of 2-hydroxy-4nitrophenylbenzoate preceded by 200 cc of ethyl acetate; Raney nickel, obtained from 30 g of alloy, is added with 300 cc of ethyl acetate. Hydrogenation under pressure (100 to 120 kg) at ordinary temperature is carried out during a period of about 12 hours. The nickel is filtered off and the ethyl acetate is removed by distillation on the water bath under a vacuum of 300 mm. There is thus obtained 80 g of crude damp 2-hydroxy-4amnophenylbenzoate which after recrystallization from isopropyl alcohol melts at 153°C.
brand name
Pheny-Pas-Tebamin (Purdue Frederick).
Therapeutic Function
Antibacterial (tuberculostatic)
Metabolism
Not Available
Purification Methods
Crystallise the ester from EtOH (m 155o, also 149-150.5o), aqueous EtOH (m 147-149o), or isopropanol. It is tuberculostatic.[Beilstein 13 IV 1979.]
Properties of Phenyl-4-aminosalicylate
Melting point: | 150-152 °C(lit.) |
Boiling point: | 371.13°C (rough estimate) |
Density | 1.2084 (rough estimate) |
refractive index | 1.5500 (estimate) |
storage temp. | -20°C Freezer |
solubility | DMSO (Slightly), Methanol (Slightly) |
form | Solid |
pka | 8.76±0.10(Predicted) |
color | Off-White |
CAS DataBase Reference | 133-11-9(CAS DataBase Reference) |
EPA Substance Registry System | Phenyl 4-aminosalicylate (133-11-9) |
Safety information for Phenyl-4-aminosalicylate
Computed Descriptors for Phenyl-4-aminosalicylate
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