3-amino-4-fluorobenzenesulfonic acid CAS 349-64-4
| CAS No. | 349-64-4 |
| Molecular Formula | C6H6FNO3S |
| Molecular Weight | 191.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-amino-4-fluorobenzenesulfonic acid 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.
3-amino-4-fluorobenzenesulfonic acid (CAS 349-64-4), molecular formula C6H6FNO3S and molecular weight 191.18 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-amino-4-fluorobenzenesulfonic acid (C6H6FNO3S) is characterized by an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H6FNO3S |
| Molecular Weight | 191.18 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 methanol, ethanol, DMSO, water |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related amino Standards
- 5-Amino-3-methylbenzofuran-2-carboxylic acid (CAS 1146292-11-6)
- 3-Amino-5-methoxy-2H-chromen-2-one (CAS 1245614-75-8)
- (R)-2-Amino-2-(benzofuran-2-yl)acetic acid (CAS 1260619-31-5)
- (S)-2-Amino-2-(benzofuran-2-yl)acetic acid (CAS 1260619-54-2)
- 3-Amino-5-methylbenzofuran-2-carboxylic acid (CAS 1557016-68-8)
- 5-Amino-2-methylbenzofuran-3-carboxylic acid (CAS 1934730-76-3)
- 2-(1-Amino-6,6-difluorobicyclo[3.1.0]hexan-3-yl)acetic acid (CAS 494210-64-9)
- 3-Amino-4-hydroxy-5-phenylfuran-2(5H)-one (CAS 343945-84-6)
Recommended Standards
- 3,5-Difluoro-2-phenylpyridine (CAS 511522-79-5)
- 3,4-Dimethylisatoic anhydride (CAS 67943-96-8)
- 3-Amino-4-hydroxybenzene-1-sulfonyl fluoride (CAS 368-73-0)
- 3,4-Dihydroxy-1-methylquinolin-2(1H)-one (CAS 41878-54-0)
- N-[2-(4-Amino-pyrazol-1-yl)-ethyl]-2-dimethylamino-acetamide dihydrochloride (CAS 1361112-70-0)
- (E)-({5-[(4-bromophenyl)sulfanyl]-1-methyl-3-phenyl-1H-pyrazol-4-yl}methylidene)[(4-methylphenyl)methoxy]amine (CAS 321998-41-8)
- 2-(P-tolyl)acetamide (CAS 6212-86-8)
- 6-(4-Chlorophenyl)-4-oxo-4,5-dihydro-[1,2,3]triazolo[1,5-a]pyrazine-3-carboxamide (CAS 1351828-67-5)
- Ethyl 6-(1,4-diazepan-1-yl)pyridine-3-carboxylate hydrochloride (CAS 1221726-03-9)
- 2-Amino-4-(3,4-dimethylphenyl)-5-methylthiophene-3-carbonitrile (CAS 438219-18-2)
- 2-Boc-2-azabicyclo[3.1.1]heptane-1-carboxylic acid (CAS 1392803-98-3)
- 6-Bromo-3-fluoro-1-(2,2,2-trifluoroethyl)-1H-indazole (CAS 2735688-96-5)
- Benzyl (3-iodophenyl)carbamate (CAS 1429987-75-6)
- Semaglutide Impurity 160 (x TFA Salt) (CAS CATO-C4X-2226160)
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