Ethyl 3-((4-(pyridin-2-yl)piperazin-1-yl)sulfonyl)benzo[b]thiophene-2-carboxylate CAS 932464-69-2
| CAS No. | 932464-69-2 |
| Molecular Formula | C20H21N3O4S2 |
| Molecular Weight | 431.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ethyl 3-((4-(pyridin-2-yl)piperazin-1-yl)sulfonyl)benzo[b]thiophene-2-carboxylate.
Ethyl 3-((4-(pyridin-2-yl)piperazin-1-yl)sulfonyl)benzo[b]thiophene-2-carboxylate (CAS 932464-69-2), molecular formula C20H21N3O4S2 and molecular weight 431.53 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Ethyl 3-((4-(pyridin-2-yl)piperazin-1-yl)sulfonyl)benzo[b]thiophene-2-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 431.53 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.
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 | C20H21N3O4S2 |
| Molecular Weight | 431.53 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
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Recommended Standards
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- Methyl 4-(2-((3-ethyl-5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)thio)acetamido)benzoate (CAS 618427-61-5)
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- 3-Chloro-4'-methylbenzophenone (CAS 116412-84-1)
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- Ketoprofen impurity 74 (CAS 24021-49-6)
- 1-Methyl-3-((methylamino)methyl)quinolin-2(1H)-one hydrochloride (CAS 1030022-56-0)
- 2,6-Dimethyl-4-{5-[(1E)-{2-[4-(trifluoromethyl)phenyl]hydrazin-1-ylidene}methyl]-1,3-thiazol-2-yl}morpholine (CAS 400079-81-4)
- 1-(6-chloropyridin-2-yl)-4-methanesulfonylpiperazine (CAS 260441-50-7)
- Insulin Degludec Impurity 17 (CAS CATO-C4X-215717)
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