4-Hydroxy-3-methoxybenzenesulfonyl chloride CAS 914261-11-3
| CAS No. | 914261-11-3 |
| Molecular Formula | C7H7ClO4S |
| Molecular Weight | 222.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Hydroxy-3-methoxybenzenesulfonyl chloride (CAS 914261-11-3), a certified reference material (molecular formula C7H7ClO4S, MW 222.65 g/mol) for analytical method development and quality control.
Structurally, 4-Hydroxy-3-methoxybenzenesulfonyl chloride (C7H7ClO4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine 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 222.65 g/mol, it falls into the medium-molecular-weight range. 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.
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 | C7H7ClO4S |
| Molecular Weight | 222.65 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; 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.) | 1987 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Hydroxy Standards
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Recommended Standards
- 4-Chloro-6-methoxy-2-(methylsulfonyl)pyrimidine (CAS 89466-55-7)
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- 4-Chloro-6-(4-fluorobenzyl)pyrimidine (CAS 405931-01-3)
- 5-Chloro-2-methoxypyridine-3-sulfonamide (CAS 2248271-70-5)
- 2-((5-(2,4-Dichlorophenyl)-4-isobutyl-4h-1,2,4-triazol-3-yl)thio)acetic acid (CAS 743452-32-6)
- (S)-2-(Hydroxymethyl)morpholine Hydrochloride (CAS 1313584-92-7)
- 4-Acetoxy-1-benzylpiperidine-4-carboxylic acid (CAS 1262988-78-2)
- 3,3,4,5,5,5-Hexafluoro-2-pentanone (CAS 60249-67-4)
- 9-methyl-2,3,3a,4,9,9a-hexahydropyrrolo[3,4-b]quinolin-1-one (CAS 1061995-26-3)
- Lafutidine Impurity 2 (CAS 174583-84-7)
- 2-[4-methyl-2-(morpholin-4-yl)-1,3-thiazol-5-yl]acetic acid (CAS 1225769-17-4)
- 1,1'-Methylenebis(pyridin-1-ium) iodide (CAS 32405-50-8)
- 3-(2,4-Dichlorobenzyl)-4-hydroxy-1-(pyridin-4-ylmethyl)pyridin-2(1H)-one (CAS 478045-91-9)
- Semaglutide Impurity 3 (CAS CATO-C4X-22263)
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