2-(1h-Pyrrol-1-yl)-4h,5h,6h-cyclopenta[b]thiophene-3-carboxylic acid CAS 26176-22-7
| CAS No. | 26176-22-7 |
| Molecular Formula | C12H11NO2S |
| Molecular Weight | 233.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(1h-Pyrrol-1-yl)-4h,5h,6h-cyclopenta[b]thiophene-3-carboxylic acid (CAS 26176-22-7), molecular formula C12H11NO2S and molecular weight 233.29 g/mol, is a CATO reference standard with documented purity and traceability.
2-(1h-Pyrrol-1-yl)-4h,5h,6h-cyclopenta[b]thiophene-3-carboxylic acid (C12H11NO2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C12H11NO2S |
| Molecular Weight | 233.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related h Standards
- 2-((6-(1H-Pyrrol-1-yl)pyrimidin-4-yl)(methyl)amino)acetic acid (CAS 1706442-58-1)
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- 4-(1H-Pyrrol-1-yl)-N-(thiazol-2-yl)butanamide (CAS 1257550-85-8)
- 2-(1h-Pyrrol-1-yl)benzene-1,4-dicarboxylic acid (CAS 1040713-41-4)
- 5-(1H-pyrrol-1-yl)isophthalic acid (CAS 944894-38-6)
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Recommended Standards
- 2-((Cyanomethyl)thio)-4-(methoxymethyl)-6-methylnicotinonitrile (CAS 263390-38-1)
- 2-(2,4-dimethylphenyl)-1,3-thiazole-4-carboxylic acid (CAS 886368-73-6)
- 2-((5-Aminothiazol-2-yl)amino)-1-phenylethanone (CAS 828920-37-2)
- 2-(2,4-dimethylphenyl)-1,3-thiazole-5-carboxylic acid (CAS 886370-26-9)
- 1-Butyl-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)urea (CAS 850567-59-8)
- N-Nitroso Lidocaine (CAS CATO-C4X-167955)
- 2-Methyl-5,8-bis(trifluoromethyl)quinoxaline (CAS 1351516-09-0)
- (E)-2-(((1-(4-nitrophenyl)-1H-pyrrol-2-yl)methylene)amino)ethan-1-ol (CAS 331666-26-3)
- 5,6-Benzoisatin (CAS 5810-96-8)
- 2,4,6-Trifluoropyridine-3-carboxylic acid (CAS 3512-14-9)
- 5,6,7,8-Tetrahydroimidazo-[1,2-a]pyrimidine hydrochloride (CAS 1209264-64-1)
- Retigabine 3,3'-Dimer (CAS 1588430-16-3)
- 4'-(Trifluoromethyl)-[1,1'-biphenyl]-3-amine hydrochloride (CAS 1211195-38-8)
- Palmitoyl Tripeptide-1 TFA salt (CAS 2803375-47-3)
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