1-(4-Fluorophenyl)-5-(thiophen-3-yl)-1H-pyrazole CAS 1269293-20-0
| CAS No. | 1269293-20-0 |
| Molecular Formula | C13H9FN2S |
| Molecular Weight | 244.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
1-(4-Fluorophenyl)-5-(thiophen-3-yl)-1H-pyrazole (CAS 1269293-20-0), molecular formula C13H9FN2S and molecular weight 244.29 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-(4-Fluorophenyl)-5-(thiophen-3-yl)-1H-pyrazole (C13H9FN2S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 244.29 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 1-(4-Fluorophenyl)-5-(thiophen-3-yl)-1H-pyrazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C13H9FN2S |
| Molecular Weight | 244.29 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Fluorophenyl Standards
- 1-(4-fluorophenyl)-1H-1,3-benzodiazole-2-thiol (CAS 1038333-46-8)
- 1-(3-Fluorophenyl)-5-(thiophen-3-yl)-1H-pyrazole (CAS 1269291-21-5)
- 1-(4-Fluorophenyl)-5-(thiophen-2-yl)-1H-pyrazole (CAS 1269291-65-7)
- 1-(2-Fluorophenyl)-5-(thiophen-3-yl)-1H-pyrazole (CAS 1269292-30-9)
- 1-(3-Fluorophenyl)-5-(thiophen-2-yl)-1H-pyrazole (CAS 1269293-54-0)
- 1-(2-Fluorophenyl)-5-(thiophen-2-yl)-1H-pyrazole (CAS 1269294-34-9)
- (2Z)-3-[(4-Fluorophenyl)amino]-2-(thiophen-3-yl)prop-2-enenitrile (CAS 477851-22-2)
- 1-((2-Fluorophenyl)sulfonyl)piperazine (CAS 565166-33-8)
Recommended Standards
- n-(3-Cyanobenzyl)tetrahydro-2h-pyran-4-carboxamide (CAS 1271663-97-8)
- 3-(4-Ethyl-3,5-dimethyl-1H-pyrazol-1-yl)benzoic acid (CAS 1266405-58-6)
- 1-(Tert-butoxycarbonyl)-1,4-diazepane-6-carboxylic acid (CAS 1273566-82-7)
- 1-(Tert-butoxycarbonyl)-4-methylpiperazine-2-carboxylic acid (CAS 1263377-93-0)
- (S)-2-(tert-Butoxycarbonyl)pyrazolidine-3-carboxylic acid (CAS 1398752-30-1)
- N-(2-Amino-5-hydroxy-6-methylpyrimidin-4-yl)-3-methylbenzamide (CAS 61581-41-7)
- (R)-2-((1-Acetylpyrrolidin-3-yl)(cyclopropyl)amino)acetic acid (CAS 1354018-71-5)
- 6,8-Difluoro-1-iodoimidazo[1,5-a]pyridine (CAS 1431163-22-2)
- N-(1-methyl-1H-pyrazol-3-yl)piperidine-2-carboxamide hydrochloride (CAS 1584517-30-5)
- 5-Chloro-3-(piperidin-1-yl)-1,2,4-thiadiazole (CAS 41248-07-1)
- Latamoxef Impurity 6 (CAS 78641-40-4)
- 2-phenylpentanal (CAS 21765-78-6)
- N-(5-(2-bromoacetyl)thiazol-2-yl)pivalamide (CAS 1067637-90-4)
- Semaglutide impurity 193 (CAS CATO-C4X-2226193)
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