2-(4-Ethynyl-3-methyl-1H-pyrazol-1-yl)acetic acid CAS 1354705-01-3
| CAS No. | 1354705-01-3 |
| Molecular Formula | C8H8N2O2 |
| Molecular Weight | 164.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-(4-Ethynyl-3-methyl-1H-pyrazol-1-yl)acetic acid (CAS 1354705-01-3), a certified reference material (molecular formula C8H8N2O2, MW 164.16 g/mol) for analytical method development and quality control.
Based on its molecular formula C8H8N2O2, 2-(4-Ethynyl-3-methyl-1H-pyrazol-1-yl)acetic 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 164.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C8H8N2O2 |
| Molecular Weight | 164.16 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 2 |
Related Ethynyl Standards
- Methyl 4-ethynyl-1-methyl-1h-pyrazole-3-carboxylate (CAS 1354704-40-7)
- 3-(4-Ethynyl-1H-pyrazol-1-yl)propanoic acid (CAS 1354704-79-2)
- 1-Ethyl-4-ethynyl-1H-pyrazole-3-carboxylic acid (CAS 1354704-82-7)
- 1-Ethyl-4-ethynyl-1H-pyrazole-5-carboxylic acid (CAS 1354704-99-6)
- 2-(4-Ethynyl-5-methyl-1H-pyrazol-1-yl)acetic acid (CAS 1354706-52-7)
- Methyl 2-(4-ethynyl-1H-pyrazol-1-yl)acetate (CAS 1823783-45-4)
- Methyl 4-ethynyl-1-methyl-1H-pyrazole-5-carboxylate (CAS 1823783-51-2)
- Methyl 5-ethynyl-1-methyl-1H-pyrazole-3-carboxylate (CAS 19762-23-3)
Recommended Standards
- 2-(Benzo[c][1,2,5]oxadiazol-5-yl)ethanol (CAS 136080-71-2)
- 3-Amino-4-hydroxy-5-methoxybenzonitrile (CAS 1362094-92-5)
- 3-(1-Ethyl-1h-pyrazol-3-yl)propiolic acid (CAS 1354704-55-4)
- 2-Amino-5-methoxy-[1,2,4]triazolo[1,5-a]pyridine (CAS 1368240-71-4)
- 2-Hydroxy-4-(2,2,2-trifluoroacetyl)benzaldehyde (CAS 2231673-59-7)
- {7-methyl-7H-pyrrolo[2,3-d]pyrimidin-2-yl}methanol (CAS 1638767-77-7)
- 2,2-Dimethyl-3-propoxypropane-1-sulfonyl chloride (CAS 1496318-50-3)
- 133938-45-1 (1-Nitromethylcyclohexyl)acetic acid ethyl ester DTXSID90456239 (CAS 133938-45-1)
- MEthyl 3-[2-(methoxycarbonyl)phenyl]benzoate (CAS 32947-58-3)
- 5β-Androst-1-ene-3,17-dione (CAS 571-39-1)
- 4-(Phenylselanyl)azetidin-2-one (CAS 89691-18-9)
- N-(2,5-Dimethylphenyl)-2-(methylamino)acetamide hydrochloride (CAS 1171227-75-0)
- 3-Amino-1-(3-methylpiperidin-1-yl)-3-phenylpropan-1-one (CAS 1016771-29-1)
- [Nva12]-Tirzepatide (CAS CATO-C4X-324042)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com