4,5-Dimethyl-2-(1h-pyrrol-1-yl)thiophene-3-carboxylic acid CAS 26176-19-2
| CAS No. | 26176-19-2 |
| Molecular Formula | C11H11NO2S |
| Molecular Weight | 221.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4,5-Dimethyl-2-(1h-pyrrol-1-yl)thiophene-3-carboxylic acid is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4,5-Dimethyl-2-(1h-pyrrol-1-yl)thiophene-3-carboxylic acid (CAS 26176-19-2) is a high-purity analytical reference standard with the molecular formula C11H11NO2S and a molecular weight of 221.28 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 4,5-Dimethyl-2-(1h-pyrrol-1-yl)thiophene-3-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 221.28 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures 4,5-Dimethyl-2-(1h-pyrrol-1-yl)thiophene-3-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H11NO2S |
| Molecular Weight | 221.28 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dimethyl Standards
- 5-(2,5-Dimethyl-1h-pyrrol-1-yl)thiophene-2-carboxylic acid (CAS 1000933-93-6)
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- 2-(2,5-Dimethyl-1-pyrrolyl)thiophene-3-carboxylic Acid (CAS 478077-98-4)
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