4-Bromo-m-xylene CAS 583-70-0
| CAS No. | 583-70-0 |
| Molecular Formula | C8H9Br |
| Molecular Weight | 185.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Bromo-m-xylene (CAS 583-70-0), a certified reference material (molecular formula C8H9Br, MW 185.06 g/mol) for analytical method development and quality control.
Based on its molecular formula C8H9Br, 4-Bromo-m-xylene contains bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 185.06 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 4-Bromo-m-xylene 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 | C8H9Br |
| Molecular Weight | 185.06 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 1-Bromo-2,5-octadiyne (CAS 1558-79-8)
- 1-Bromo-2-ethylbenzene (CAS 1973-22-4)
- 1-Bromo-3-ethylbenzene (CAS 2725-82-8)
- 1-Bromo-4-ethylbenzene (CAS 1585-07-5)
- 2-Bromo-m-xylene (CAS 576-22-7)
- 1-bromo-1-methanesulfonylethene (CAS 35495-31-9)
- 4-Bromo-1-(prop-2-yn-1-yl)-1H-pyrazole (CAS 1183907-89-2)
- 5-Bromo-4-vinylpyrimidine (CAS 1333222-29-9)
Recommended Standards
- Dexmedetomidine Impurity 50 (CAS 583-71-1)
- 2,3-Dimethylbromobenzene (CAS 576-23-8)
- Meclizine Impurity 5 (CAS 620-13-3)
- Pentafluorophenol-OD (CAS 105596-34-7)
- 2-(6-Oxo-5,6-dihydro-4H-cyclopenta[b]thiophen-4-ylidene)malononitrile (CAS 2098784-70-2)
- 2-((1R,4s)-5'-(4-amino-7,7-dimethyl-2-(trifluoromethyl)-7H-pyrimido[4,5-b][1,4]oxazin-6-yl)-2',3'-dihydrospiro[cyclohexane-1,1'-inden]-4-yl)acetic acid (CAS 701232-94-2)
- (1R,2S)-2-(4-chlorophenyl)cyclopropan-1-amine (CAS 209738-22-7)
- (3,5-Difluorophenyl)(2-(methylthio)phenyl)methanone (CAS 951888-24-7)
- 1-{[3-(methoxymethyl)phenyl]sulfanyl}-N,N-dimethylformamide (CAS 1375473-65-6)
- 6-Bromo-3-methyl-1H-pyrido[2,3-b][1,4]oxazin-2(3H)-one (CAS 1823324-96-4)
- 1-(6-(Cyclohexylamino)-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-2-yl)-N-methyl-1H-pyrazole-4-carboxamide (CAS 915097-60-8)
- sodium (2E)-1,1,1-trifluoro-4-(2-methylphenyl)-4-oxobut-2-en-2-olate (CAS 1015534-16-3)
- 4-Chloro-3-(difluoromethyl)-6-iodopicolinonitrile (CAS 1804673-12-8)
- Peptide Impurity 05 (CAS 2322924-83-2)
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