(E)-3-(1-ethyl-5-methyl-1H-pyrazol-4-yl)acrylic acid CAS 512809-25-5
| CAS No. | 512809-25-5 |
| Molecular Formula | C9H12N2O2 |
| Molecular Weight | 180.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C9H12N2O2, (E)-3-(1-ethyl-5-methyl-1H-pyrazol-4-yl)acrylic 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 180.20 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
(E)-3-(1-ethyl-5-methyl-1H-pyrazol-4-yl)acrylic acid (CAS 512809-25-5) is a high-purity analytical reference standard with the molecular formula C9H12N2O2 and a molecular weight of 180.20 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), (E)-3-(1-ethyl-5-methyl-1H-pyrazol-4-yl)acrylic 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 | C9H12N2O2 |
| Molecular Weight | 180.20 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, 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 2 |
Recommended Standards
- (E)-3-(1-Ethyl-3-methyl-1h-pyrazol-4-yl)acrylic acid (CAS 512809-40-4)
- (E)-5-(3-Hydroxyprop-1-en-1-yl)-2-methoxyphenol (CAS 344402-10-4)
- (E)-3-(1,3,5-Trimethyl-1H-pyrazol-4-yl)acrylic acid (CAS 27268-09-3)
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