3-(2-Nitrophenoxy)thiophene-2-carboxylic acid CAS 252026-99-6
| CAS No. | 252026-99-6 |
| Molecular Formula | C11H7NO5S |
| Molecular Weight | 265.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 265.24 g/mol gives 3-(2-Nitrophenoxy)thiophene-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3-(2-Nitrophenoxy)thiophene-2-carboxylic acid (CAS 252026-99-6), a certified reference material (molecular formula C11H7NO5S, MW 265.24 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 3-(2-Nitrophenoxy)thiophene-2-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 265.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C11H7NO5S |
| Molecular Weight | 265.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Nitrophenoxy Standards
- 3-(4-Nitrophenoxy)thiophene-2-carboxylic acid (CAS 252026-66-7)
- 1-(4-Nitrophenoxy)naphthalene (CAS 3402-81-1)
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Recommended Standards
- 2-(Methylsulfonyl)ethyl n-succinimidyl carbonate (CAS 57903-15-8)
- 2-(2-Fluorobenzyl)-1,5-dimethyl-4-nitro-1h-pyrazol-3(2h)-one (CAS 2007909-46-6)
- 5-(((4-Fluorophenyl)amino)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dione (CAS 332129-58-5)
- 3-(Benzo[d][1,3]dioxol-5-yl)-4-hydroxyisothiazole-5-carboxylic acid (CAS 1956369-36-0)
- 6,7-Dihydrobenzo[b]thiophen-5(4H)-one (CAS 58095-45-7)
- 3,6-dichloro-5-methoxy-1,2,4-triazine (CAS 57857-39-3)
- 4-[2-chloro-4-(chlorosulfonyl)phenoxy]butanoic acid (CAS 1016835-63-4)
- 4-(Chloromethyl)-1-(methylsulfonyl)piperidine (CAS 1082943-87-0)
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