(4-Hydroxypyrazol-1-yl)-acetic acid tert-butyl ester CAS 883976-91-8
| CAS No. | 883976-91-8 |
| Molecular Formula | C9H14N2O3 |
| Molecular Weight | 198.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures (4-Hydroxypyrazol-1-yl)-acetic acid tert-butyl ester 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.
(4-Hydroxypyrazol-1-yl)-acetic acid tert-butyl ester (CAS 883976-91-8), molecular formula C9H14N2O3 and molecular weight 198.22 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H14N2O3, (4-Hydroxypyrazol-1-yl)-acetic acid tert-butyl ester 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 198.22 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.
Physical & Chemical Properties
| Molecular Formula | C9H14N2O3 |
| Molecular Weight | 198.22 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 methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Related Hydroxypyrazol Standards
Recommended Standards
- (4-Aminopyridin-3-yl)(phenyl)methanone (CAS 3810-12-6)
- (5-(Morpholinomethyl)-1,2,4-oxadiazol-3-yl)methanamine (CAS 893752-98-2)
- (4,5-Dimethoxy-1,2-phenylene)dimethanol (CAS 22943-99-3)
- (5-methyl-2-phenyl-1,3-oxazol-4-yl)acetonitrile (CAS 524959-64-6)
- Peptide 74 (H-8545.0500) (CAS 132116-39-3)
- DL-erythro-4-Fluoroglutamic acid (CAS 91383-48-1)
- Ethyl 2-(3-oxo-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)acetate (CAS 26673-71-2)
- 3-Hydroxy-3-methylhex-4-enoic acid (CAS 64447-78-5)
- 4,5,6,7-Tetrahydro-2H-indazol-3(3aH)-one (CAS 1587-09-3)
- (6-Methylpyridin-2-yl)(4-propoxyphenyl)methanone (CAS 1187170-47-3)
- 4-(((4'-Methoxy-[1,1'-biphenyl])-4-sulfonamido)methyl)benzoic acid (CAS 885269-44-3)
- 2,7-dimethyl-5-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine (CAS 949980-32-9)
- N-(3-(2-Phenyl-1H-imidazol-1-yl)propyl)furan-2-carboxamide (CAS 95082-37-4)
- Semaglutide impurity 70 (CAS CATO-C4X-222670)
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