1-(2-Hydroxyethyl)-1H-pyrazol-4-ol CAS 1065608-74-3
| CAS No. | 1065608-74-3 |
| Molecular Formula | C5H8N2O2 |
| Molecular Weight | 128.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 1-(2-Hydroxyethyl)-1H-pyrazol-4-ol under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
1-(2-Hydroxyethyl)-1H-pyrazol-4-ol (CAS 1065608-74-3), molecular formula C5H8N2O2 and molecular weight 128.13 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1-(2-Hydroxyethyl)-1H-pyrazol-4-ol (C5H8N2O2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C5H8N2O2 |
| Molecular Weight | 128.13 g/mol |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 2,3-Epoxypropyl acrylate (CAS 106-90-1)
- Ethyl prop-2-yn-1-yl carbonate (CAS 107820-22-4)
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- Methyl 2-hydroxy-2-methylbut-3-ynoate (CAS 1082737-09-4)
- (1h-Indazol-5-yl)boronic acid hydrochloride (CAS 1257738-46-7)
- 1,4-Di-tert-butyl 2-formylpiperazine-1,4-dicarboxylate (CAS 216228-85-2)
- 4-Nitro-1-(trichloromethoxy)-2-(trifluoromethyl)benzene (CAS 1417566-46-1)
- Ethyl 6-bromo-4-chloro-7-ethoxyquinoline-3-carboxylate (CAS 953803-81-1)
- N-BIOTINYL GLYCINE (CAS 160390-90-9)
- 6-bromo-1-methyl-1H-pyrazolo[3,4-d]pyrimidine (CAS 1367794-18-0)
- 4-Chloro-2-(trifluoromethyl)pteridine (CAS 1443287-68-0)
- MC-PEG2-C2-NHS ester (CAS 1263044-56-9)
- 2-Bromo-6-(tert-butyl)-4-cyclopropoxypyridine (CAS 1243383-91-6)
- Peptide Impurity 24 (CAS CATO-CPTD788824)
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