(4-Chloro-2-sulfophenoxy)acetic acid CAS 1189310-33-5
| CAS No. | 1189310-33-5 |
| Molecular Formula | C8H7ClO6S |
| Molecular Weight | 266.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(4-Chloro-2-sulfophenoxy)acetic acid (CAS 1189310-33-5) is a high-purity analytical reference standard with the molecular formula C8H7ClO6S and a molecular weight of 266.66 g/mol.
(4-Chloro-2-sulfophenoxy)acetic acid (C8H7ClO6S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C8H7ClO6S |
| Molecular Weight | 266.66 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 |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-Chloro-5-(4-fluorobenzyl)-3-nitropyridine, 97% (CAS 1159813-28-1)
- 6-Chloro-3-fluoro-N-(5-methylpyrazin-2-yl)picolinamide (CAS 2438941-79-6)
- Methyl 4-(2-Chloro-5-fluoro-4-pyrimidinyl)benzoate (CAS 663611-72-1)
- Methyl 2-((5-chloro-2-fluorophenyl)sulfonyl)acetate (CAS 1779133-08-2)
- 8-Chloro-3-(methylthio)-6-(trifluoromethyl)imidazo[1,5-a]pyridine (CAS 1823188-26-6)
- (3-Chloro-4-methylphenyl)(3,4-difluorophenyl)methanone (CAS 951891-00-2)
- (3-Chloro-4-methylphenyl)(3,5-difluorophenyl)methanone (CAS 951891-02-4)
- (4-Chloro-3-methylphenyl)(3,4-difluorophenyl)methanone (CAS 951891-29-5)
Recommended Standards
- 9-fluoro-5,6-dihydroimidazo[1,2-d][1,4]benzoxazepine-2-carbonyl chloride (CAS 1282519-09-8)
- Regorafenib Impurity 40 (CAS 2711-18-4)
- 2-((2-Nitropyridin-3-yl)oxy)ethane-1-sulfonyl chloride (CAS 1340273-53-1)
- 5-Chloro-2-(4-fluorophenoxy)benzoic acid (CAS 847729-51-5)
- (2R,4R)-4-methylazetidine-2-carboxylic acid (CAS 2287347-25-3)
- 4-Fluoro-N-(2-phenylbenzo[d]oxazol-5-yl)benzamide (CAS 301646-85-5)
- 2-(6-Fluoro-2-pyridyl)acetic Acid (CAS 1000517-25-8)
- 2-Bromo-5-(3-methoxyphenoxy)-1,3,4-thiadiazole (CAS 1344306-45-1)
- 4-(4-bromophenyl)-4-methylpiperidine hydrochloride (CAS 1803608-16-3)
- (2-Iodophenyl)(pyridin-3-yl)methanone (CAS 1187165-39-4)
- 2-(((1H-benzo[d]imidazol-2-yl)methyl)thio)-6-(2,5-dimethoxyphenyl)-4-(trifluoromethyl)nicotinonitrile (CAS 939893-56-8)
- Tert-butyl (4S,5R)-5-fluoro-1-oxa-7-azaspiro[3.5]Nonane-7-carboxylate (CAS 2216758-75-5)
- N-((4-bromothiophen-3-yl)methyl)-2,2-dimethylthietan-3-amine (CAS 1876172-22-3)
- Mast Cell Degranulating Peptide HR-1 (CAS 80533-94-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com