2-(2-Chlorobenzamido)-4h,5h,6h-cyclopenta[b]thiophene-3-carboxylic acid CAS 326611-23-8
| CAS No. | 326611-23-8 |
| Molecular Formula | C15H12ClNO3S |
| Molecular Weight | 321.78 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 2-(2-Chlorobenzamido)-4h,5h,6h-cyclopenta[b]thiophene-3-carboxylic acid.
2-(2-Chlorobenzamido)-4h,5h,6h-cyclopenta[b]thiophene-3-carboxylic acid (CAS 326611-23-8), molecular formula C15H12ClNO3S and molecular weight 321.78 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-(2-Chlorobenzamido)-4h,5h,6h-cyclopenta[b]thiophene-3-carboxylic acid (C15H12ClNO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 321.78 g/mol, it falls into the moderately-high-molecular-weight range. 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.
As a certified reference material (CRM), 2-(2-Chlorobenzamido)-4h,5h,6h-cyclopenta[b]thiophene-3-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C15H12ClNO3S |
| Molecular Weight | 321.78 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chlorobenzamido Standards
- Methyl 3-(3-chlorobenzamido)-6-methyl-2-oxo-2H-pyran-5-carboxylate (CAS 339009-28-8)
- Methyl 3-(4-chlorobenzamido)-6-methyl-2-oxo-2H-pyran-5-carboxylate (CAS 338404-91-4)
- Methyl 2-(3-chlorobenzamido)-4,5-dimethylthiophene-3-carboxylate (CAS 447409-05-4)
- 2-(4-Chlorobenzamido)-4-(methylsulfonyl)butanoic acid (CAS 1103964-06-2)
- 3-(4-Chlorobenzamido)-3-(4-methoxyphenyl)propanoic acid (CAS 332052-54-7)
- Methyl 3-(4-chlorobenzamido)-4-methylthiophene-2-carboxylate (CAS 676318-51-7)
- 2-(2-Chlorobenzamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamide (CAS 298193-32-5)
- 2-(3-Chlorobenzamido)-N-methyl-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxamide (CAS 893092-48-3)
Recommended Standards
- 1-(2-chlorophenyl)methyl)-3-(4-nitrophenyl)thiourea (CAS 900701-83-9)
- 2-(4-Chlorophenyl)-2-oxoethyl 2-(methylthio)nicotinate (CAS 380553-05-9)
- 4-[(3-Chloro-4-methoxyphenyl)(methylsulfonyl)amino]butanoic acid (CAS 1858241-21-0)
- 2-Chloro-1-{4-[(dimethyl-1,2-oxazol-4-yl)sulfonyl]piperazin-1-yl}ethan-1-one (CAS 923203-47-8)
- methyl[2-(3-phenyl-1,2,4-oxadiazol-5-yl)ethyl]amine hydrochloride (CAS 1803605-77-7)
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- 4-Benzyloxy-2-fluorobenzeneboronic acid pinacol ester, 97% (CAS 1823170-17-7)
- a-Bag Cell Peptide (1-8) (CAS 87549-53-9)
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