5-(4-Methoxyphenyl)-1h-pyrrole-2-carboxylic acid CAS 149769-78-8
| CAS No. | 149769-78-8 |
| Molecular Formula | C12H11NO3 |
| Molecular Weight | 217.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(4-Methoxyphenyl)-1h-pyrrole-2-carboxylic acid (C12H11NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
5-(4-Methoxyphenyl)-1h-pyrrole-2-carboxylic acid (CAS 149769-78-8), molecular formula C12H11NO3 and molecular weight 217.22 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C12H11NO3 |
| Molecular Weight | 217.22 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 1 |
Related Methoxyphenyl Standards
- 4-(2-Methoxyphenyl)-1h-pyrrole-3-carboxylic acid (CAS 1096308-15-4)
- 4-(3-Methoxyphenyl)-1h-pyrrole-3-carboxylic acid (CAS 1096790-29-2)
- 4-(4-Methoxyphenyl)-1h-pyrrole-2-carboxylic acid (CAS 1204297-39-1)
- 5-(3-Methoxyphenyl)-1H-pyrrole-2-carboxylic acid (CAS 1225551-48-3)
- 1-[(2-methoxyphenyl)methyl]-2,5-dihydro-1H-pyrrole-2,5-dione (CAS 133137-34-5)
- 3-(4-Methoxyphenyl)-1H-pyrazole-5-carboxamide, 97% (CAS 1397191-27-3)
- 1-(4-Methoxyphenyl)-1H-imidazole-4-carboxamide (CAS 1427021-23-5)
- 1-(3-Methoxyphenyl)-1H-pyrrole-2-carboxylic acid (CAS 188953-78-8)
Recommended Standards
- 2-Hydroxy-3-(quinolin-4-yl)propanoic acid (CAS 1492805-64-7)
- 3-Methyl-1-(pyridin-4-ylmethyl)-1h-pyrazole-5-carboxylic acid (CAS 1500530-79-9)
- 4-Amino-6-(3-methoxyphenyl)pyridazin-3-ol (CAS 1491291-23-6)
- 4-[(1-methyl-1H-pyrazol-3-yl)amino]benzoic acid (CAS 1501642-68-7)
- (-)-Syringaresinol di-O-glucoside (CAS 66791-77-3)
- 3-(1,1-Difluoroethyl)pyrrolidine hydrochloride (CAS 1782455-15-5)
- 1,2,4,8-Tetrachlorodibenzofuran (CAS 64126-87-0)
- 2-(Cyclohexylamino)-4-nitropyridine 1-oxide (CAS 75291-50-8)
- n-(Pyrimidin-5-ylmethyl)cyclohexanamine (CAS 1339341-94-4)
- (5R)-5-cyclopropylmorpholin-3-one (CAS 1390681-24-9)
- 2-Chloro-7-methylquinazolin-4(3H)-one (CAS 62484-41-7)
- 2-(2-(Dimethylamino)-4-mesitylthiazol-5-yl)acetic acid (CAS 1443286-19-8)
- 1-Piperidinecarbothioamide, N-(4-chlorophenyl)-4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]- (CAS 1956365-05-1)
- Antiarrhythmic peptide (cattle atrium) (CAS 81771-37-1)
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