4-Methylbenzene-1-sulfonyl bromide CAS 1950-69-2
| CAS No. | 1950-69-2 |
| Molecular Formula | C7H7BrO2S |
| Molecular Weight | 235.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-Methylbenzene-1-sulfonyl bromide (CAS 1950-69-2) is a high-purity analytical reference standard with the molecular formula C7H7BrO2S and a molecular weight of 235.10 g/mol.
Structurally, 4-Methylbenzene-1-sulfonyl bromide (C7H7BrO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 235.10 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 4-Methylbenzene-1-sulfonyl bromide 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 | C7H7BrO2S |
| Molecular Weight | 235.10 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Methylbenzene Standards
- 1-[(4-Methylbenzene)sulfonyl]-1H-pyrrol-2-ol (CAS 1881288-77-2)
- 3-Acetyl-4-methylbenzene-1-sulfonyl chloride (CAS 1152590-15-2)
- 2-Methyl-1-[(4-methylbenzene)sulfonyl]azetidine (CAS 13595-47-6)
- 1-N-methylbenzene-1,4-disulfonamide (CAS 1138-53-0)
- 4-Methylbenzene-1,3-disulfonamide (CAS 717-44-2)
- n1-Methylbenzene-1,3-disulfonamide (CAS 84448-03-3)
- N-methylbenzene-1,2-disulfonamide (CAS 27291-98-1)
- 1-[(4-methylbenzene)sulfonyl]propan-2-ol (CAS 85870-05-9)
Recommended Standards
- 5-Bromo-4-methyl-2-(methylsulfinyl)pyrimidine (CAS 1934553-04-4)
- (5-Bromopyridin-3-yl)(imino)(methyl)-l6-sulfanone (CAS 2361936-19-6)
- N-(4-bromo-5-methylthiazol-2-yl)acetamide (CAS 1934494-58-2)
- (6-Bromopyridin-2-yl)(imino)(methyl)-l6-sulfanone (CAS 2172959-03-2)
- 2-((2-Aminoethyl)(isopropyl)amino)-1-(pyrazin-2-yl)ethanone (CAS 1353955-93-7)
- (2S,4R)-4-fluoropyrrolidine-2-carbonitrile hydrochloride (CAS 2306249-26-1)
- N-Benzyl-2-methylpropan-1-amine hydrochloride (CAS 23530-81-6)
- 1-(2,4-dimethyl-3,5-dinitrophenyl)ethan-1-one (CAS 1251924-56-7)
- tert-butyl 2-amino-5H,6H,7H,8H-imidazo[1,2-a]pyridine-3-carboxylate (CAS 1955530-77-4)
- 5-Methyl-1-(4-nitrophenyl)-N-(p-tolyl)-1H-1,2,4-triazole-3-carboxamide (CAS 321431-15-6)
- N-(6-Aminopyrimidin-4-yl)acetamide (CAS 89533-23-3)
- (S)-1-(Benzyloxy)-3-(trityloxy)propan-2-ol (CAS 83526-68-5)
- 4-Isopropoxy-3-methoxyphenol (CAS 86636-03-5)
- [Tyr15] Fibrinopeptide B, human (CAS 125455-56-3)
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