2-Methoxy-5-(pentafluorosulfur)benzoic acid CAS 1211516-08-3
| CAS No. | 1211516-08-3 |
| Molecular Formula | C8H7F5O3S |
| Molecular Weight | 278.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Methoxy-5-(pentafluorosulfur)benzoic acid (CAS 1211516-08-3), molecular formula C8H7F5O3S and molecular weight 278.20 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H7F5O3S, 2-Methoxy-5-(pentafluorosulfur)benzoic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 278.20 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C8H7F5O3S |
| Molecular Weight | 278.20 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Methoxy Standards
- 2-Methoxy-5-(pentafluoro-λ6-sulfanyl)benzoic acid (CAS 1448319-14-9)
- 3-[3-methoxy-4-(2,2,2-trifluoroethoxy)phenyl]propanoic acid (CAS 1235439-17-4)
- 4-(5-Methoxy-2-(trifluoromethyl)phenyl)picolinonitrile (CAS 1219454-65-5)
- 2-Methoxy-4-[3-(trifluoromethyl)phenyl]pyridine-3-carbonitrile (CAS 478245-73-7)
- 6-Methoxy-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyridine (CAS 2057513-69-4)
- Ethyl 5-methoxy-3-methyl-7-nitro-1H-indole-2-carboxylate (CAS 1265145-36-5)
- 2-(5-Methoxy-1-methyl-2,4-dioxo-1,4-dihydropyrido[2,3-d]pyrimidin-3(2H)-yl)-N-methylacetamide (CAS 941946-92-5)
- 5-(2-Methoxy-5-nitrophenyl)furan-2-carbothioamide (CAS 1354756-77-6)
Recommended Standards
- N-(5-Fluoro-2-oxo-2,3-dihydropyrimidin-4-yl)-4-nitrobenzamide (CAS 10357-10-5)
- 2-methyl-2-[4-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl]propanenitrile (CAS 1402390-59-3)
- 78839-75-5 N-(tert-Butoxycarbonyl)-2-bromoaniline DTXSID10393753 (CAS 78839-75-5)
- tert-butyl N-[(1R,3R)-3-(bromomethyl)cyclopentyl]carbamate (CAS 2306254-13-5)
- n-(2-Methoxybenzyl)-1-(methylsulfonyl)propan-2-amine (CAS 1378531-11-3)
- (2S,4R)-Benzyl 4-(trifluoromethyl)pyrrolidine-2-carboxylate hydrochloride (CAS 2755813-03-5)
- 2-(Hexylamino)-1H-purin-6(9H)-one (CAS 123994-82-1)
- 3-Epicabraleadiol (CAS 19942-04-2)
- 2-(1-Amino-2,2-dimethylcyclohexyl)acetic acid (CAS 1516603-31-8)
- 2-(Tetrahydro-2H-pyran-2-yl)ethan-1-amine hydrochloride (CAS 1005756-81-9)
- 5-Ethoxy-2-(4-fluorophenyl)oxazole (CAS 477867-62-2)
- 4-Methyl-3-(1-piperidinyl)aniline (CAS 882626-96-2)
- 6,7-Dihydro-5H-cyclopenta[c]pyridin-5-one 4-methylbenzenesulfonate (CAS 2305079-78-9)
- Galanin-Like Peptide (human) trifluoroacetate salt (CAS 245114-99-2)
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