Phenyl 4-Aminosalicylate CAS 133-11-9
| CAS No. | 133-11-9 |
| Molecular Formula | C13H11NO3 |
| Molecular Weight | 229.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Phenyl 4-Aminosalicylate (CAS 133-11-9), a certified reference material (molecular formula C13H11NO3, MW 229.23 g/mol) for analytical method development and quality control.
Structurally, Phenyl 4-Aminosalicylate (C13H11NO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 229.23 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C13H11NO3 |
| Molecular Weight | 229.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Phenyl Standards
- Sodium aminosalicylate Impurity 4 (CAS 17540-51-1)
- Sodium aminosalicylate Impurity 5 (CAS 15540-79-1)
- Sodium aminosalicylate EP Impurity A(Mesalazine EP Impurity B) (CAS 591-27-5)
- Calcium 4-aminosalicylate Heptahydrate (CAS 133-15-3)
- Sodium Aminosalicylate Dihydrate (CAS 6018-19-5)
- Sodium aminosalicylate (CAS 8031-28-5)
Recommended Standards
- 2-(2-Phenylhydrazinyl)nicotinic acid (CAS 1325304-37-7)
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- 1,3-Diethyl 2-(2-Azidoethyl)propanedioate (CAS 131325-86-5)
- 4-(2-Methoxyphenyl)nicotinic acid (CAS 133363-00-5)
- 2-(5-Iodopyrimidin-2-yl)acetonitrile (CAS 1597285-30-7)
- (+)-1,2-Bis((2S,5S)-2,5-diphenylphospholano)ethane(1,5-cyclooctadiene)rhodium(I) (CAS 849950-52-3)
- 2-(4-Isopropylphenyl)-1,3-diphenylimidazolidine (CAS 306325-43-9)
- 1-(2-Chloro-4-((6,7-dimethoxyquinolin-4-yl)oxy)phenyl)-3-(5-methylisoxazol-3-yl)urea hydrate (CAS 682745-40-0)
- 6-sulfanylpyridine-2-carboxylic acid (CAS 14716-87-1)
- (4-methoxypyridin-3-yl)boronic acid (CAS 355004-67-0)
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- Atrial Natriuretic Peptide (ANP)(1-28) Alpha (Human, Ovine, Canine) (CAS 91917-63-4)
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