1-(4-Nitrophenyl)-5-(thiophen-3-yl)-1H-pyrazole CAS 1269293-11-9
| CAS No. | 1269293-11-9 |
| Molecular Formula | C13H9N3O2S |
| Molecular Weight | 271.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 1-(4-Nitrophenyl)-5-(thiophen-3-yl)-1H-pyrazole (CAS 1269293-11-9), a certified reference material (molecular formula C13H9N3O2S, MW 271.29 g/mol) for analytical method development and quality control.
Based on its molecular formula C13H9N3O2S, 1-(4-Nitrophenyl)-5-(thiophen-3-yl)-1H-pyrazole contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 271.29 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), 1-(4-Nitrophenyl)-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 | C13H9N3O2S |
| Molecular Weight | 271.29 g/mol |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Nitrophenyl Standards
- (R)-1-((2-Nitrophenyl)sulfonyl)pyrrolidin-3-amine (CAS 1187932-93-9)
- 1-(2-Nitrophenyl)-5-(thiophen-3-yl)-1H-pyrazole (CAS 1269292-14-9)
- 1-(4-Nitrophenyl)-5-(thiophen-2-yl)-1H-pyrazole (CAS 1269292-53-6)
- 1-(2-Nitrophenyl)-5-(thiophen-2-yl)-1H-pyrazole (CAS 1269293-17-5)
- (S)-1-((2-Nitrophenyl)sulfonyl)pyrrolidin-3-amine (CAS 468104-07-6)
- 1-((2-Nitrophenyl)sulfonyl)pyrrolidin-3-amine (CAS 902797-82-4)
- 1-((4-Nitrophenyl)sulfonyl)piperazine (CAS 403825-44-5)
- 1-[(3-nitrophenyl)sulfonyl]piperazine (CAS 89474-78-2)
Recommended Standards
- 2-[(3-methoxypropyl)sulfanyl]-5-nitrobenzoic acid (CAS 1274507-38-8)
- 2-Cyclopropoxy-5-(methylsulfonamido)benzoic acid (CAS 1243481-06-2)
- 3-Hydroxy-2-phenylthiazolo[3,2-a]pyridin-4-ium-8-carboxylate (CAS 1301679-00-4)
- 4-Cyclopropoxy-2-(methylsulfonamido)nicotinamide (CAS 1243480-04-7)
- Ethyllithium, typ. 8 % solution in Dibutyl Ether (typ. 1.7 M) 811-49-4 (CAS 811-49-4)
- 3,7-Dimethyl-1H-indazole (CAS 58706-32-4)
- 1,3-Dibromo-2,4-difluoro-6-(difluoromethoxy)benzene (CAS 1806302-61-3)
- 2-Amino-5-bromo-4-(difluoromethyl)nicotinic acid (CAS 1804721-20-7)
- 1-cyclopropyl-2-(1H-1,2,4-triazol-1-yl)ethan-1-one (CAS 86518-82-3)
- N-(6-Amino-2,4-dioxo-1,3-dipropyl-1,2,3,4-tetrahydropyrimidin-5-yl)-4-bromobenzamide (CAS 409345-41-1)
- 1-Ethynyl-4-((4-nitrophenyl)ethynyl)benzene (CAS 183022-61-9)
- 5-(propan-2-yl)-1H-1,2,3,4-tetrazole (CAS 6280-28-0)
- 1-Phenyltridecan-1-one (CAS 6005-99-8)
- Anti-Inflammatory Peptide 2 (CAS 118850-72-9)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com