1-(2-Bromophenyl)-5-(thiophen-3-yl)-1H-pyrazole CAS 1269292-27-4
| CAS No. | 1269292-27-4 |
| Molecular Formula | C13H9BrN2S |
| Molecular Weight | 305.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-(2-Bromophenyl)-5-(thiophen-3-yl)-1H-pyrazole (CAS 1269292-27-4) is a high-purity analytical reference standard with the molecular formula C13H9BrN2S and a molecular weight of 305.19 g/mol.
Structurally, 1-(2-Bromophenyl)-5-(thiophen-3-yl)-1H-pyrazole (C13H9BrN2S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, bromine 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 305.19 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C13H9BrN2S |
| Molecular Weight | 305.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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 | Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Bromophenyl Standards
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Recommended Standards
- methyl 4-[(4-bromobenzene)sulfinyl]butanoate (CAS 1250092-90-0)
- 3-Bromo-N-ethyl-N-(2-(methylamino)-2-oxoethyl)thiophene-2-carboxamide (CAS 1211027-34-7)
- 2-Bromo-6-(1-(methylsulfonyl)pyrrolidin-2-yl)pyridine (CAS 1316218-67-3)
- 5-Bromo-N-(2-(dimethylamino)-2-oxoethyl)-N-methylthiophene-3-carboxamide (CAS 1156592-17-4)
- 1,2,4-Trichlorodibenzo-p-dioxin (CAS 39227-58-2)
- 4-Bromo-1,5-dimethyl-1H-imidazole-2-carboxylic acid (CAS 1367934-84-6)
- methyl imidazo[1,5-a]pyridine-1-carboxylate (CAS 1039356-98-3)
- Loxoprofen Impurity 159 (CAS CATO-C4X-1488159)
- Xanthydrol (CAS 90-46-0)
- 2-(5-Oxo-1-phenyl-2,5-dihydro-1h-pyrazol-3-yl)acetic acid (CAS 37959-11-8)
- 3-(4-Chlorophenyl)-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 1030421-13-6)
- 4-Nitro-4'-aminodiphenyl-d4 Sulfone (CAS 1346601-85-1)
- 2-(5-Methyl-2-nitrophenoxy)acetic acid (CAS 869944-70-7)
- D-Trp25-Tirzepatide (CAS CATO-CPTD788909)
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