3-(4-Methylphenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid CAS 104803-06-7
| CAS No. | 104803-06-7 |
| Molecular Formula | C11H12N2O2 |
| Molecular Weight | 204.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-(4-Methylphenyl)-4,5-dihydro-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.
3-(4-Methylphenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid (CAS 104803-06-7), molecular formula C11H12N2O2 and molecular weight 204.23 g/mol, is a CATO reference standard with documented purity and traceability.
3-(4-Methylphenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid (C11H12N2O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H12N2O2 |
| Molecular Weight | 204.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 2 |
Related Methylphenyl Standards
- 5-methyl-1-(4-methylphenyl)imidazolidine-2,4-dione (CAS 1008214-93-4)
- 5-methyl-5-(2-methylphenyl)imidazolidine-2,4-dione (CAS 88807-84-5)
- 5-methyl-5-(4-methylphenyl)imidazolidine-2,4-dione (CAS 23186-96-1)
- 6-(2-methylphenyl)-1,3-diazinane-2,4-dione (CAS 861324-98-3)
- 4-Methyl-1-(4-methylphenyl)pentane-1,3-dione (CAS 100612-22-4)
- 1-[(4-methylphenyl)methyl]cyclobutane-1-carboxylic acid (CAS 1485944-77-1)
- 1-(2-Methylphenyl)cyclopentanecarboxylic Acid (CAS 854414-95-2)
- 1-(3-Methylphenyl)cyclopentane-1-carboxylic acid (CAS 75024-23-6)
Recommended Standards
- 104310-02-3 1H-1,5-Benzodiazepine-1-carboxaldehyde, 2,3,4,5-tetrahydro-3-methyl-4-oxo- BRN 4446116 2,3,4,5-Tetrahydro-3-methyl-4-oxo-1H-1,5-benzodiazepine-1-carboxaldehyde (CAS 104310-02-3)
- Ethyl 2-(1H-pyrrolo[2,3-b]pyridin-1-yl)acetate (CAS 1048913-05-8)
- ethyl 2-methylimidazo[1,2-a]pyridine-6-carboxylate (CAS 1042981-09-8)
- N-Methoxy-N-methyl-1H-indole-5-carboxamide (CAS 1056442-76-2)
- 2-Chloro-3,6-difluoro-4-hydroxybenzoic acid (CAS 749230-42-0)
- 1,3,5-trimethyl-4-(pyrrolidin-2-yl)-1H-pyrazole (CAS 1354953-49-3)
- trans-4-Cyclohexyl-L-proline (CAS 103201-78-1)
- n-(Cyclopropylmethyl)-4-fluoro-2-methylaniline (CAS 1154342-07-0)
- Methyl (2S,4S)-4-(4-bromo-3-fluorophenoxy)-2-pyrrolidinecarboxylate (CAS 1217617-24-7)
- 2-((2-Aminothiazol-4-yl)methyl)-1,3,2-dioxaphosphinane 2-oxide methanesulfonate (CAS 2173153-42-7)
- Encorafenib Impurity 5 (CAS CATO-C4X-32495)
- 5-(2-Fluorophenyl)oxazole-4-carboxylic acid (CAS 347187-18-2)
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- Autocamtide-2-Related Inhibitory Peptide TFA (CAS 167114-91-2（free base）)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com