4-Fluorobenzene-1-sulfinic acid CAS 369-51-7
| CAS No. | 369-51-7 |
| Molecular Formula | C6H5FO2S |
| Molecular Weight | 160.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 4-Fluorobenzene-1-sulfinic acid (CAS 369-51-7), a certified reference material (molecular formula C6H5FO2S, MW 160.17 g/mol) for analytical method development and quality control.
4-Fluorobenzene-1-sulfinic acid (C6H5FO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C6H5FO2S |
| Molecular Weight | 160.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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 | F-containing |
| Sulfur Atoms | 1 |
Related Fluorobenzene Standards
- 2-Fluorobenzene-1-sulfinic acid (CAS 763049-18-9)
- 2-fluorobenzene-1-carbothioamide (CAS 75907-82-3)
- 1-Butyl-3-fluorobenzene (CAS 20651-66-5)
- 1-Butyl-4-fluorobenzene (CAS 20651-65-4)
- 2-Fluorobenzene-1,3,5-tricarbonitrile (CAS 13519-91-0)
- 319-03-9 4-FLUOROBENZENE-1,2-DICARBOXYLIC ANHYDRIDE 4-FLUOROPHTHALIC ACID ANHYDRIDE 4-Fluorophthalic anhydride 5-FLUORO-1,3-DIHYDRO-2-BENZOFURAN-1,3-DIONE 5-FLUORO-1,3-ISOBENZOFURANDIONE 5-FLUORO-2-BENZOFURAN-1,3-DIONE 5-FLUOROISOBENZOFURAN-1,3-DIONE AS02025 (CAS 319-03-9)
- 3-fluorobenzene-1-sulfonyl fluoride (CAS 1547-91-7)
- 4-Fluorobenzene-1,3-dicarboxylic acid (CAS 327-95-7)
Recommended Standards
- 4-Cyano-N-methylbenzamide (CAS 36268-62-9)
- 4-Hydroxy-1-phenylbut-2-yn-1-one (CAS 52804-68-9)
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- 4-Hydroxy-4-(hydroxymethyl)-3,3-dimethyldihydrofuran-2(3H)-one (CAS 2260932-18-9)
- n-Methyl-1-(2,4,6-trimethoxyphenyl)methanamine (CAS 1097125-26-2)
- [(4-isopropoxy-3-thienyl)methyl]amine (CAS 1428234-11-0)
- 2-Chloro-3,6-dimethylpyridine (CAS 72093-14-2)
- 2-(Difluoromethyl)-4-fluoro-5-nitro-3-(trifluoromethyl)pyridine (CAS 1805197-39-0)
- (2-(P-tolyl)acetyl)valine (CAS 1397007-60-1)
- 2-(Hexylsulfonyl)acetonitrile (CAS 203310-42-3)
- (4-Chlorophenyl)methanesulfonyl fluoride (CAS 1513-29-7)
- Podophyllotoxin impurity 5 (CAS 1174-97-6)
- 2-(1-carboxy-1-methylethoxy)-2-methylpropanoic acid (CAS 10151-15-2)
- Peptide 440 (CAS CATO-CPTD788440)
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