Azobenzene-4-sulfonyl Chloride CAS 102840-82-4
| CAS No. | 102840-82-4 |
| Molecular Formula | C12H9ClN2O2S |
| Molecular Weight | 280.73 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.
CATO supplies Azobenzene-4-sulfonyl Chloride (CAS 102840-82-4), a certified reference material (molecular formula C12H9ClN2O2S, MW 280.73 g/mol) for analytical method development and quality control.
Structurally, Azobenzene-4-sulfonyl Chloride (C12H9ClN2O2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 280.73 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
Physical & Chemical Properties
| Molecular Formula | C12H9ClN2O2S |
| Molecular Weight | 280.73 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Azobenzene Standards
Recommended Standards
- 2-[(4-Chlorophenyl)sulfonyl]benzaldehyde (CAS 1004293-22-4)
- 1-(tert-Butyl)-3-(3-chloro-4-fluorophenyl)-1H-pyrazole-4-carbaldehyde (CAS 1152873-39-6)
- 1-(4-((2-Chloro-6-fluorobenzyl)oxy)phenyl)ethan-1-ol (CAS 477889-19-3)
- (3,4,5-Trimethoxyphenyl)methanesulfonyl chloride (CAS 1194376-12-9)
- 5,6-diphenyl-2,3-dihydropyridazin-3-one (CAS 2166-34-9)
- Sodium (E)-3-(2-(4-fluorophenyl)benzo[d]imidazo[2,1-b]thiazol-3-yl)acrylate (CAS 681260-11-7)
- 7-Chloro-3-(2-fluorophenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidine (CAS 1204298-01-0)
- Ethyl 3-iodo-1H-indazole-6-carboxylate (CAS 1041205-24-6)
- 8-methyl-1,8-diazaspiro[3.5]nonane;dihydrochloride (CAS 2702078-42-8)
- 2,3,4,5-Tetrafluoro-6-hydroxybenzaldehyde (CAS 502762-93-8)
- rac-(3aR,7aS)-1-(propan-2-yl)-octahydro-1H-imidazolidino[4,5-c]pyridin-2-one hydrochloride (CAS 1909293-64-6)
- 3-(2-Fluorophenyl)-5-(trifluoromethyl)pyridin-2-ol (CAS 1214342-62-7)
- Tert-butyl 3-(methoxy(methyl)carbamoyl)cyclohexane-1-carboxylate (CAS 1393845-80-1)
- Semaglutide impurity 331 (CAS CATO-C4X-2226231)
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