2-(2-Ethyl-1h-imidazol-1-yl)benzoic acid CAS 159589-72-7
| CAS No. | 159589-72-7 |
| Molecular Formula | C12H12N2O2 |
| Molecular Weight | 216.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-(2-Ethyl-1h-imidazol-1-yl)benzoic acid (CAS 159589-72-7), molecular formula C12H12N2O2 and molecular weight 216.24 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H12N2O2, 2-(2-Ethyl-1h-imidazol-1-yl)benzoic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 216.24 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C12H12N2O2 |
| Molecular Weight | 216.24 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 DMSO, DMF, methanol |
| 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.) | 2002 |
| Nitrogen Atoms | 2 |
Recommended Standards
- (R)-4-((1H-indol-3-yl)methyl)oxazolidin-2-one (CAS 157636-81-2)
- 2-(4-((1H-Pyrazol-1-yl)methyl)phenyl)acetic acid (CAS 160388-51-2)
- (S)-3-(Pyridin-3-yl)-5-(pyrrolidin-2-yl)-1,2,4-oxadiazole (CAS 1565163-94-1)
- Methyl 4-((1h-imidazol-1-yl)methyl)benzoate (CAS 160446-18-4)
- 1-(2-Fluorophenyl)-3-(3-nitrophenyl)-1H-pyrazole-4-carbaldehyde (CAS 618101-77-2)
- N-(2-Methoxyphenyl)-2-(4-methoxyphenyl)quinoline-4-carboxamide (CAS 332157-18-3)
- Methyl 1-[cyano(pyridin-2-yl)methyl]isoquinoline-4-carboxylate (CAS 439108-14-2)
- 1-(4-Iodo-1H-pyrazol-1-yl)propan-2-ol (CAS 1342407-07-1)
- Ethyl 3-chloro-5-cyanobenzoate (CAS 1261456-33-0)
- tert-Butyl 4-(3-methylureido)piperidine-1-carboxylate (CAS 1233955-69-5)
- tert-Butyl 1-(hydroxymethyl)-3-azabicyclo[4.1.0]heptane-3-carboxylate (CAS 1192688-51-9)
- 8-Methylchroman-4-amine (CAS 754958-74-2)
- 2-Chloro-1-oxazol-4-yl-ethanone (CAS 1216314-67-8)
- Tirzepatide Impurity 38 (CAS CATO-C4X-324038)
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