3-(2-Hydroxyphenyl)-1H-pyrazole-5-carboxylic acid CAS 46393-99-1
| CAS No. | 46393-99-1 |
| Molecular Formula | C10H8N2O3 |
| Molecular Weight | 204.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C10H8N2O3, 3-(2-Hydroxyphenyl)-1H-pyrazole-5-carboxylic 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 204.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
3-(2-Hydroxyphenyl)-1H-pyrazole-5-carboxylic acid (CAS 46393-99-1), molecular formula C10H8N2O3 and molecular weight 204.18 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 3-(2-Hydroxyphenyl)-1H-pyrazole-5-carboxylic acid 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.
Physical & Chemical Properties
| Molecular Formula | C10H8N2O3 |
| Molecular Weight | 204.18 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1970 |
| Nitrogen Atoms | 2 |
Related Hydroxyphenyl Standards
- 3-(4-Hydroxyphenyl)-1H-pyrazole-5-carboxylic acid (CAS 1093649-88-7)
- 5-(3-Hydroxyphenyl)furan-2-carboxylic acid (CAS 1235473-69-4)
- 3-(2-Hydroxyphenyl)-1H-pyrazole-5-carboxylic acid (CAS 1877340-50-5)
- (5Z)-5-[(4-hydroxyphenyl)methylene]imidazolidine-2,4-dione (CAS 80171-33-1)
- 5-(3-Hydroxyphenyl)-1h-pyrazole-3-carboxylic acid (CAS 690631-98-2)
- 3-((2-Hydroxyphenyl)amino)-1,2,4-triazin-5(2H)-one (CAS 857492-03-6)
- (R)-3-(4-Hydroxyphenyl)hex-4-ynoic acid (CAS 1147732-37-3)
- (S)-3-(4-Hydroxyphenyl)hex-4-ynoic acid (CAS 865233-35-8)
Recommended Standards
- 3-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)propiolic acid (CAS 343317-54-4)
- 3-(2-Methoxyphenyl)-1,2,4-oxadiazole-5-carbaldehyde (CAS 944901-99-9)
- 2-Oxo-5-phenyl-2,3-dihydro-1H-imidazole-4-carboxylic acid (CAS 92809-77-3)
- 3-(2-Methoxyphenyl)furan-2,5-dione (CAS 4664-99-7)
- 1-(4-Isopropylphenoxy)-3-(4-methylpiperazin-1-yl)propan-2-ol dihydrochloride (CAS 475146-17-9)
- 2-(2-Methoxyethyl)-6-methylpyrimidin-4-amine (CAS 3120-36-3)
- 6-(chloromethyl)piperidin-2-one (CAS 1315366-70-1)
- 2-(5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)propan-2-ol (CAS 1300118-52-8)
- (R)-2-((3aR,5S,6aR)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-5-yl)-2-hydroxyethyl benzoate (CAS 20720-46-1)
- Methyl 2-(4-chlorophenyl)-4-(3-fluorophenyl)-4-oxobutanoate (CAS 478260-87-6)
- 4-(5-amino-1,3,4-oxadiazol-2-yl)phenol (CAS 1750-79-4)
- 2-((tert-Butoxycarbonyl)amino)-3-(3,5-difluorophenyl)propanoic acid (CAS 669057-06-1)
- 2,3-Dichloro-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine (CAS 1393557-19-1)
- Custom peptides (CAS CATO-CPTD788509)
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