4-Hydroxybenzenemethanesulfonyl Chloride CAS 1394917-69-1
| CAS No. | 1394917-69-1 |
| Molecular Formula | C7H7ClO3S |
| Molecular Weight | 206.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Hydroxybenzenemethanesulfonyl Chloride (CAS 1394917-69-1), molecular formula C7H7ClO3S and molecular weight 206.65 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Hydroxybenzenemethanesulfonyl Chloride (C7H7ClO3S) 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 206.65 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.
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 | C7H7ClO3S |
| Molecular Weight | 206.65 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.) | 1991 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Recommended Standards
- Ethyl 2-Amino-5-chlorothiazole-4-carboxylate (CAS 136539-01-0)
- N-(6-chloropyridin-3-yl)methanesulfonamide (CAS 143937-70-6)
- 6-Chloro-2-methylpyridine-3-sulfonamide (CAS 1355172-69-8)
- 2-chloro-7-fluoro-pyrido[1,2-a]pyrimidin-4-one (CAS 1449598-86-0)
- 1-Ethyl-1H-indole-5-carbonitrile (CAS 83783-28-2)
- 2-Isopropylthiazol-4-amine (CAS 1159819-49-4)
- 4-bromo-2-fluoro-N-(3-methoxyphenyl)benzenesulfonamide (CAS 1312305-74-0)
- 2-Amino-6,7-dihydrothiazolo[5,4-c]pyridin-4(5H)-one hydrochloride (CAS 1312412-89-7)
- 1-(3-Bromopropyl)azepane (CAS 113385-31-2)
- Ciprofloxacin Impurity 44 (CAS CATO-C4X-136244)
- 1-(thiomorpholin-3-yl)methanamine (CAS 103742-33-2)
- 2-(5-Amino-3-cyclobutyl-1H-pyrazol-1-yl)-6-methylpyrimidin-4(3H)-one (CAS 1416344-24-5)
- (3-Aminopyridin-4-yl)boronic acid (CAS 2096337-23-2)
- Semaglutide Impurity 10 (CAS CATO-C4X-222610)
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