2-Iodothieno[2,3-b]pyridine CAS 1823930-57-9
| CAS No. | 1823930-57-9 |
| Molecular Formula | C7H4INS |
| Molecular Weight | 261.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Iodothieno[2,3-b]pyridine (CAS 1823930-57-9), molecular formula C7H4INS and molecular weight 261.08 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H4INS, 2-Iodothieno[2,3-b]pyridine contains a nitrile group, sulfur-containing functionality, iodine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 261.08 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C7H4INS |
| Molecular Weight | 261.08 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.) | 1995 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Iodothieno Standards
- 7-Iodothieno[3,2-b]pyridine (CAS 1057670-32-2)
- 2-Iodothieno[2,3-c]pyridine (CAS 1823914-47-1)
- 2-Iodothieno[3,2-b]pyridine (CAS 94191-17-0)
- 2-Iodothieno[3,2-c]pyridine (CAS 94226-17-2)
- 3-Iodothieno[2,3-b]pyridine (CAS 53399-37-4)
- 3-Iodothieno[3,2-b]pyridine (CAS 94191-13-6)
- 4-Iodothieno[3,2-d]pyrimidine (CAS 1593776-54-5)
- 4-Iodothieno[2,3-d]pyrimidine (CAS 18740-27-7)
Recommended Standards
- (1-(tert-Butoxycarbonyl)-1H-indol-4-yl)boronic acid (CAS 2102451-30-7)
- 1-Boc-indole-3-boronic Acid (CAS 181365-26-4)
- (1-(Tert-butoxycarbonyl)-1H-indol-5-yl)boronic acid (CAS 317830-84-5)
- (5-(N,N-Dimethylsulfamoyl)-2-fluoro-4-methylphenyl)boronic acid (CAS 1704121-40-3)
- (2S,11aS)-Fmoc-2-amino-10-carboxymethyl-1,2,3,11a-tetrahydro-10H-pyrrolo[2,1-c][1,4]-benzodiazepine- (CAS 182624-46-0)
- (2R,4R)-1-((benzyloxy)carbonyl)-4-((tert-butoxycarbonyl)amino)pyrrolidine-2-carboxylic acid (CAS 2306252-46-8)
- 2,4-Dichloro-5,7-dihydrothieno[3,4-d]pyrimidine 6,6-dioxide (CAS 1429639-72-4)
- (3S,6R,7S,8S,12Z,15S,16E)-3,7,15-Tris-{[tert-butyl(dimethyl)silyl]oxy}-1-hydroxy-4,4,6,8,12,16-hexamethyl-17-(2-methyl-1,3-thiazol-4-yl)heptadeca-12,16-dien-5-one (CAS 193146-53-1)
- Ethyl 2-(2,4-difluorophenyl)-2-oxoacetate (CAS 157372-95-7)
- 1,1,1-trifluoro-3-methoxy-2-methylpropan-2-amine hydrochloride (CAS 1354958-86-3)
- Ethyl (s)-2-amino-3-(4-methoxyphenyl)propanoate (CAS 17193-43-0)
- 2-(Difluoromethyl)pyrimidin-5-ol (CAS 100991-19-3)
- Donepezil Impurity 19 (CAS CATO-C4X-103919)
- Semaglutide impurity 60 (CAS CATO-C4X-222660)
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