2-(6-ethynyl-3-pyridyl)acetic acid CAS 1211540-18-9
| CAS No. | 1211540-18-9 |
| Molecular Formula | C9H13NO2 |
| Molecular Weight | 167.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(6-ethynyl-3-pyridyl)acetic acid (C9H13NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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).
2-(6-ethynyl-3-pyridyl)acetic acid (CAS 1211540-18-9) is a high-purity analytical reference standard with the molecular formula C9H13NO2 and a molecular weight of 167.21 g/mol.
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.
As a certified reference material (CRM), 2-(6-ethynyl-3-pyridyl)acetic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H13NO2 |
| Molecular Weight | 167.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 6-(tert-Butoxy)pyridin-3-ol (CAS 1211532-35-2)
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- (E)-1-(1,3,5-Trimethyl-1h-pyrazol-4-yl)ethan-1-one oxime (CAS 1206252-35-8)
- (S)-4-(2-hydroxy-1-(methylamino)ethyl)phenol (CAS 1212871-56-1)
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- P,P-Diphenylphosphinic hydrazide (CAS 6779-66-4)
- 1H,1H,2H,2H-Perfluoro-5-methylhexan-1-ol (CAS 89076-11-9)
- 4-(3-Methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfinic acid (CAS 143148-89-4)
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- 1-Cyclobutyl-3,5-dimethyl-1h-pyrazole-4-carboxylic acid (CAS 1056618-08-6)
- 4-Methoxy-n-(prop-2-en-1-yl)benzene-1-sulfonamide (CAS 34954-40-0)
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- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
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