7-Chlorothieno[2,3-c]pyridine CAS 28948-58-5
| CAS No. | 28948-58-5 |
| Molecular Formula | C7H4ClNS |
| Molecular Weight | 169.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Chlorothieno[2,3-c]pyridine (CAS 28948-58-5) is a high-purity analytical reference standard with the molecular formula C7H4ClNS and a molecular weight of 169.63 g/mol.
Structurally, 7-Chlorothieno[2,3-c]pyridine (C7H4ClNS) contains a nitrile group, sulfur-containing functionality, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 169.63 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 7-Chlorothieno[2,3-c]pyridine 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 | C7H4ClNS |
| Molecular Weight | 169.63 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chlorothieno Standards
- 6-Chlorothieno[3,2-c]pyridine (CAS 1781989-24-9)
- 2-Chlorothieno[2,3-b]pyridine (CAS 1823943-95-8)
- 2-Chlorothieno[2,3-c]pyridine (CAS 756477-32-4)
- 2-Chlorothieno[3,2-b]pyridine (CAS 94191-14-7)
- 2-Chlorothieno[3,2-c]pyridine (CAS 28783-23-5)
- 3-Chlorothieno[2,3-b]pyridine (CAS 53399-36-3)
- 3-Chlorothieno[3,2-b]pyridine (CAS 94191-11-4)
- 4-Chlorothieno[2,3-c]pyridine (CAS 477874-92-3)
Recommended Standards
- 7-Chlorobenzo[d]thiazole (CAS 2942-09-8)
- 7-Chlorothieno[3,2-b]pyridine (CAS 69627-03-8)
- 7-Chlorobenzo[d]isothiazole (CAS 89583-90-4)
- N-cyclopropyl-N-methylsulfamoyl chloride (CAS 338449-00-6)
- 3-(Tert-butoxy)propan-1-amine hydrochloride (CAS 864658-14-0)
- 6-(tert-Butoxy)-3-cyclopropoxy-2-nitropyridine (CAS 1243393-62-5)
- (2S,3R)-2,3-Dimethylazetidin-3-ol (CAS 1932274-56-0)
- 2-([1,1'-Biphenyl]-4-ylsulfonamido)acetic acid 107491-28-1 (CAS 107491-28-1)
- 6-[1-Methyl-2-(4-phenoxyphenoxy)ethoxy]-3-pyridinol (CAS 168844-46-0)
- 5205-39-0 Ethyl 4-(chloroformyl)butyrate Ethyl 5-chloro-5-oxovalerate Ethyl glutaryl chloride Glutaric acid monoethyl ester chloride (CAS 5205-39-0)
- 1-(Pyridin-2-yl)piperidin-4-amine (CAS 144465-94-1)
- (S)-1-(2,4,5-trimethoxyphenyl)ethan-1-amine (CAS 1212881-57-6)
- 1-(4-Methoxyphenyl)butan-2-one (CAS 53917-01-4)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com