(1-(o-Tolyl)-3-(p-tolyl)-1H-pyrazol-4-yl)methanol CAS 618441-81-9
| CAS No. | 618441-81-9 |
| Molecular Formula | C18H18N2O |
| Molecular Weight | 278.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of (1-(o-Tolyl)-3-(p-tolyl)-1H-pyrazol-4-yl)methanol (C18H18N2O) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
(1-(o-Tolyl)-3-(p-tolyl)-1H-pyrazol-4-yl)methanol (CAS 618441-81-9), molecular formula C18H18N2O and molecular weight 278.35 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.
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 | C18H18N2O |
| Molecular Weight | 278.35 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 2 |
Related o Standards
- p-Tolyl(5-(p-tolyl)-1H-1,2,4-triazol-3-yl)methanamine (CAS 1707735-85-0)
- p-Tolyl(5-(m-tolyl)-1H-1,2,4-triazol-3-yl)methanamine (CAS 1708275-32-4)
- (1-(m-Tolyl)-3-(p-tolyl)-1H-pyrazol-4-yl)methanol (CAS 618441-87-5)
- 4-(5-(p-Tolyl)oxazol-2-yl)benzamide (CAS 108783-86-4)
- 3-(2-(p-Tolyl)imidazo[1,2-a]pyridin-3-yl)acrylic acid (CAS 817172-45-5)
- 1-(O-tolyl)-3-(3,4,5-trifluorophenyl)propan-1-one (CAS 898777-58-7)
- 1-(P-tolyl)-3-(3,4,5-trifluorophenyl)propan-1-one (CAS 898777-62-3)
- 3-(M-tolyl)-1-(3,4,5-trifluorophenyl)propan-1-one (CAS 898768-24-6)
Recommended Standards
- (1,3-Di-p-tolyl-1H-pyrazol-4-yl)methanol (CAS 618444-54-5)
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- (3-(3,4-Dimethylphenyl)-1-phenyl-1H-pyrazol-4-yl)methanol (CAS 955972-07-3)
- 2,3,4,5,6-Pentachlorobenzaldehyde (CAS 19635-52-0)
- 3-Methyl-8-(4-methylpiperidin-1-yl)-7-octyl-3,7-dihydro-1H-purine-2,6-dione (CAS 672919-13-0)
- 3’,4’-Dimethoxy-2-hydroxyacetophenone (CAS 37803-48-8)
- [1,1′-Binaphthalen]-2-amine, 2′-(diphenylphosphino)-N,N-dimethyl-, (1R)- (CAS 216368-93-3)
- 1-([1,1'-Biphenyl]-4-yl)piperazin-2-one (CAS 907972-38-7)
- (4-Bromo-3-(difluoromethyl)-5-fluoropyridin-2-yl)methanol (CAS 1805396-70-6)
- 4-amino-3-methyl-1H-pyrazolo[4,3-c]quinoline-8-carboxylic acid (CAS 2790570-02-2)
- 4-[(3-Methoxyphenyl)sulfanyl]-2-(methylsulfanyl)quinazoline (CAS 477845-90-2)
- (S)-tert-Butyl (5-amino-1-hydroxy-5-oxopentan-2-yl)carbamate (CAS 133565-42-1)
- (SP-4-2)-Tribromo(2,4,6-trimethylpyridine)gold (CAS 97374-28-2)
- Tetrapeptide-30/Tegopep (CAS 1036207-61-0)
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