4-Benzyl-2-methyl-4h-thieno[3,2-b]pyrrole-5-carboxylic acid CAS 1047142-67-5
| CAS No. | 1047142-67-5 |
| Molecular Formula | C15H13NO2S |
| Molecular Weight | 271.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Benzyl-2-methyl-4h-thieno[3,2-b]pyrrole-5-carboxylic acid (CAS 1047142-67-5), molecular formula C15H13NO2S and molecular weight 271.33 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 4-Benzyl-2-methyl-4h-thieno[3,2-b]pyrrole-5-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 271.33 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 | C15H13NO2S |
| Molecular Weight | 271.33 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- (2-Methanesulfonyl-1-Methyl-Ethyl)-Carbamic Acid Benzyl Ester (CAS 1032451-76-5)
- 4-Phenethyl-4H-thieno[3,2-b]pyrrole-5-carboxylic acid (CAS 1047321-71-0)
- 1-(4-(Morpholinosulfonyl)phenyl)ethan-1-ol (CAS 1031659-70-7)
- 2-Fluoro-N-(thiophen-3-ylmethyl)benzenesulfonamide (CAS 1060229-59-5)
- Benzo[d]isothiazole-4-carboxylic acid (CAS 1378831-60-7)
- (2Z)-3-(Dimethylamino)-2-Fluoro-1-(4-Methylphenyl)-2-Propen- (CAS 59160-27-9)
- 3-Methyl-2-(4-(trifluoromethyl)phenyl)butanoic acid (CAS 1226210-35-0)
- 4-(1,3-thiazolidin-2-yl)benzonitrile (CAS 90595-44-1)
- (Z)-[Amino(4-aminophenyl)methylidene]amino 4-chlorobenzoate (CAS 1373237-01-4)
- 5-[(2,5-Difluorophenyl)methyl]-1,2-oxazole-3-carboxylic Acid (CAS 1258503-80-8)
- 5-Chloro-2-(pyrrolidin-2-yl)-1h-1,3-benzodiazole (CAS 1035841-23-6)
- 2,6-Diphenylpyridine 1-oxide (CAS 78500-88-6)
- 4-(2-Aminoethyl)-1λ⁶-thiane-1,1-dione hydrochloride (CAS 1354951-86-2)
- Semaglutide Impurity 166 (CAS 1395881-03-4)
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