(5-Chloro-1,3-dimethyl-1H-pyrazol-4-yl)(2-fluorophenyl)methanone CAS 29938-71-4
| CAS No. | 29938-71-4 |
| Molecular Formula | C12H10ClFN2O |
| Molecular Weight | 252.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(5-Chloro-1,3-dimethyl-1H-pyrazol-4-yl)(2-fluorophenyl)methanone (CAS 29938-71-4), molecular formula C12H10ClFN2O and molecular weight 252.67 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (5-Chloro-1,3-dimethyl-1H-pyrazol-4-yl)(2-fluorophenyl)methanone (C12H10ClFN2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 252.67 g/mol, it falls into the medium-molecular-weight range. 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.
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 | C12H10ClFN2O |
| Molecular Weight | 252.67 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 5-Chloro-3-ethyl-1-(2-fluorophenyl)-1H-pyrazole-4-carbaldehyde (CAS 1152583-51-1)
- 5-Chloro-3-ethyl-1-(4-fluorophenyl)-1H-pyrazole-4-carbaldehyde (CAS 1152583-77-1)
- 2-Chloro-4-(3-fluoro-4-methoxyphenyl)phenol (CAS 1261892-00-5)
- 5-Chloro-2'-fluoro-3'-methoxy-[1,1'-biphenyl]-3-ol (CAS 1261920-31-3)
- 2-Chloro-4-(4-fluoro-3-methoxyphenyl)phenol (CAS 1261920-40-4)
- 3-Chloro-2'-fluoro-4'-methoxy-[1,1'-biphenyl]-4-ol (CAS 1261931-63-8)
- 4-(3-Chloro-4-methoxyphenyl)-3-fluorophenol (CAS 1261946-56-8)
- 5-Chloro-3-ethyl-1-(3-fluorophenyl)-1H-pyrazole-4-carbaldehyde (CAS 1270722-72-9)
Recommended Standards
- (2-(4-Chloro-3-fluorophenoxy)phenyl)methanol (CAS 477887-07-3)
- 1-(4-Chloro-2-fluorophenyl)-3,5-dimethyl-1H-pyrazole-4-carbaldehyde (CAS 2379321-22-7)
- 3-(Benzyloxy)-2-chloro-6-fluorophenol (CAS 1881321-93-2)
- 2-Chloro-6-(1-(3-fluorophenyl)ethoxy)pyrazine (CAS 426829-21-2)
- N-Benzyloxycarbonyl-4-O-benzyl Dopamine (CAS 87745-55-9)
- n-((3,4-Dihydro-2h-pyran-2-yl)methyl)-2-methoxyaniline (CAS 1250844-84-8)
- Methyl 4-aminothiazole-2-carboxylate (CAS 1373046-14-0)
- 4-Amino-7-chlorocinnoline-3-carboxylic acid (CAS 161373-47-3)
- 6-Methyl-2-phenylquinoline-4-carbonyl chloride (CAS 174636-75-0)
- (3aR,7aR)-Octahydrofuro[3,2-b]pyridine hydrochloride (CAS 1807939-54-3)
- 1-((4-Fluoro-3-methylphenyl)sulfonyl)pyrrolidine (CAS 691381-07-4)
- (R)-7-Bromo-6-methoxychroman-4-amine (CAS 1344468-16-1)
- 5-Oxo-4-(3-(trifluoromethyl)benzyl)-4,5-dihydropyrazolo[1,5-a]quinazoline-3-carbonitrile (CAS 861208-18-6)
- Acetyl Dipeptide-1 (CAS 196604-48-5)
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