4-Chloro-2-iodothieno[2,3-b]pyridine CAS 1574562-73-4
| CAS No. | 1574562-73-4 |
| Molecular Formula | C7H3ClINS |
| Molecular Weight | 295.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-Chloro-2-iodothieno[2,3-b]pyridine (CAS 1574562-73-4) is a high-purity analytical reference standard with the molecular formula C7H3ClINS and a molecular weight of 295.53 g/mol.
Owing to a nitrile group, sulfur-containing functionality, chlorine/iodine substitution, an aromatic ring system, 4-Chloro-2-iodothieno[2,3-b]pyridine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 295.53 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 4-Chloro-2-iodothieno[2,3-b]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 | C7H3ClINS |
| Molecular Weight | 295.53 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.) | 1993 |
| Halogen Content | Cl/I-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 4-Chloro-2-iodobenzo[d]thiazole (CAS 1071402-38-4)
- 4-Chloro-7-iodothieno[3,2-c]pyridine (CAS 1203579-69-4)
- 7-Chloro-4-iodothieno[2,3-c]pyridine (CAS 1360892-46-1)
- 5-Chloro-2-iodophenyl Isothiocyanate (CAS 1360917-74-3)
- 6-Chloro-2-iodothieno[2,3-b]pyridine (CAS 1431869-34-9)
- 7-Chloro-6-iodothieno[3,2-b]pyridine (CAS 1595635-51-0)
- 4-Chloro-3-iodothieno[3,2-c]pyridine (CAS 1638768-20-3)
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Recommended Standards
- (1-(tert-Butoxycarbonyl)-6-chloro-1H-indol-2-yl)boronic acid (CAS 352359-22-9)
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- 2-(4-Bromo-2-fluorophenoxy)butanoyl chloride (CAS 2138016-81-4)
- 1199943-84-4 Benzene, 4-chloro-2-iodo-1-isothiocyanato- (CAS 1199943-84-4)
- 1-(6-Chloropyridin-3-yl)-3,4-dihydropyrrolo[1,2-a]pyrazine (CAS 924867-44-7)
- 3-aminospiro[3.3]heptan-1-ol (CAS 1936644-16-4)
- 4-(2,7-Diazaspiro[4.4]nonan-2-ylmethyl)benzonitrile hydrochloride (CAS 1941076-26-1)
- Tin(II) stearate (CAS 6994-59-8)
- 4-Bromo-1,7-dimethyl-1H-indazole (CAS 1159511-79-1)
- 1,6-Dimethyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid (CAS 956386-40-6)
- 3-Methylisothiazolo[5,4-b]quinoline (CAS 548930-76-3)
- 3-Bromo-6-chloro-2-(trifluoromethyl)aniline (CAS 1805585-25-4)
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- [D-Phe22]Semaglutide (CAS CATO-C4X-2226222)
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