3,4,5-Tribromo-1-(4-nitrophenyl)-1H-pyrazole CAS 175135-29-2
| CAS No. | 175135-29-2 |
| Molecular Formula | C9H4Br3N3O2 |
| Molecular Weight | 425.86 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3,4,5-Tribromo-1-(4-nitrophenyl)-1H-pyrazole.
CATO supplies 3,4,5-Tribromo-1-(4-nitrophenyl)-1H-pyrazole (CAS 175135-29-2), a certified reference material (molecular formula C9H4Br3N3O2, MW 425.86 g/mol) for analytical method development and quality control.
The molecular framework of 3,4,5-Tribromo-1-(4-nitrophenyl)-1H-pyrazole (C9H4Br3N3O2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), 3,4,5-Tribromo-1-(4-nitrophenyl)-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 | C9H4Br3N3O2 |
| Molecular Weight | 425.86 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2007 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Tribromo Standards
- 4,6,7-Tribromo-1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxylic acid (CAS 96680-46-5)
- 2,4,6-Tribromo-3-(((tetrahydro-2H-pyran-2-yl)oxy)methyl)pyridine (CAS CATO-CIM-105249)
- 2,4,8-Tribromo-6H-dibenzo[c,e][1,2]oxaborinin-6-ol (CAS 36894-85-6)
- 1,3,7-Tribromo-9H-fluoren-2-amine (CAS 724-31-2)
- 2,4,6-Tribromo-5-amino-isophthalic acid (CAS 35453-30-6)
- 2,4,5-Tribromo-1-[[2-(trimethylsilyl)ethoxy]methyl]-1H-imidazole (CAS 159590-01-9)
- 2,4,6-tribromo-1-trifluoromethylthiobenzene (CAS 1215205-79-0)
- 2,4,6-tribromo-5-(trifluoromethyl)benzene-1,3-diamine (CAS 646989-62-0)
Recommended Standards
- 2,4-Dimethyl 5-(3-chlorobenzamido)-3-(2-methoxy-2-oxoethyl)thiophene-2,4-dicarboxylate (CAS 338393-17-2)
- 4-((4-Chlorophenyl)(cyano)methyl)-2,5-difluoro-N-(thiazol-2-yl)benzenesulfonamide (CAS 1799412-44-4)
- (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-(4-chloro-3-fluorophenyl)acetic acid (CAS 2349702-20-9)
- (4-(4-Chlorophenyl)piperazin-1-yl)(6-(trifluoromethyl)thieno[3,2-b]pyridin-2-yl)methanone (CAS 303997-59-3)
- 2-Bromo-N-(4,5-dimethyl-thiazol-2-yl)-propionamide (CAS 878416-76-3)
- (S)-ar-Curcumene (CAS 4176-06-1)
- 2-[7-Chloro-2-(pyridin-2-yl)-1h-indol-3-yl]ethan-1-amine hydrochloride (CAS 1049783-68-7)
- Ethyl 2-(2-((4-phenoxyphenyl)amino)thiazol-4-yl)acetate (CAS 1024040-00-3)
- 4-(Acridin-9-ylamino)-N,N-dimethylbenzamide hydrochloride(1:x) (CAS 66501-02-8)
- 3-(3-Chloro-4-(trifluoromethyl)phenyl)propanoic acid (CAS 1036395-80-8)
- 2-(5-Bromothiophen-2-yl)morpholine (CAS 1178409-69-2)
- 7-Amino-5,6,7,8-tetrahydroimidazo[1,2-a]pyridine (CAS 1367938-31-5)
- N-Cyclohexylimidodicarbonic diamide (CAS 68498-52-2)
- Uremic Pentapeptide (CAS 71494-20-7)
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