3,5-Bis(4-bromophenyl)-4-chloro-1h-pyrazole CAS 1159988-75-6
| CAS No. | 1159988-75-6 |
| Molecular Formula | C15H9Br2ClN2 |
| Molecular Weight | 412.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3,5-Bis(4-bromophenyl)-4-chloro-1h-pyrazole (C15H9Br2ClN2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 412.51 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 3,5-Bis(4-bromophenyl)-4-chloro-1h-pyrazole (CAS 1159988-75-6), a certified reference material (molecular formula C15H9Br2ClN2, MW 412.51 g/mol) for analytical method development and quality control.
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 | C15H9Br2ClN2 |
| Molecular Weight | 412.51 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bis Standards
- 3,5-Bis(3-bromophenyl)-4-chloro-1h-pyrazole (CAS 1159988-52-9)
- 2-(4-(((4-Bromophenyl)thio)methyl)phenyl)benzo[d]thiazole (CAS 339030-79-4)
- 4-(4-Bromophenyl)-2-(4-chlorophenyl)thiomorpholine-3,5-dione 1-oxide (CAS 252027-13-7)
- 1-(2-Bromophenyl)-4-(1-isobutyl-1H-benzo[d]imidazol-2-yl)pyrrolidin-2-one (CAS 862828-35-1)
- (2S)-2-[[4-(4-bromophenyl)phenyl]sulfonylamino]-3-methylbutanoic acid (CAS 199850-67-4)
- 2-(4-Bromophenyl)-1-(4-fluorophenyl)-6,6-dimethyl-1,5,6,7-tetrahydro-4H-indol-4-one (CAS 96757-24-3)
- 7-(4-Bromophenyl)-5-methyl-N-(pyridin-3-yl)-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxamide (CAS 452089-06-4)
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Recommended Standards
- AZ20 (CAS 1233339-22-4)
- Cefcapene Impurity 98 (CAS CATO-C4X-182498)
- 2-[(5-{1-[(4-Ethoxyphenyl)amino]ethyl}-4-phenyl-4H-1,2,4-triazol-3-yl)thio]acetohydrazide (CAS 1306739-36-5)
- Cefcapene Impurity 63 (CAS CATO-C4X-182463)
- 4-Dimethyl-6-methyl-tetrahydro-1,3-oxazine-2-thione (CAS 17374-19-5)
- 3-Chloro-6-methyl-1-phenylisoquinoline (CAS 89721-12-0)
- (4-Bromonaphthalen-2-yl)methanol (CAS 874357-17-2)
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- 4-Bromo-2-(2-methylthiazol-4-yl)phenol (CAS 1387566-00-8)
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- 2-chlorocyclohexane-1-carbonitrile (CAS 89728-29-0)
- Palmitoyl Pentapeptide-4 (CAS 214047-00-4)
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