4-Chloro-7-iodo-3-methylthieno[3,2-c]pyridine CAS 1211581-44-0
| CAS No. | 1211581-44-0 |
| Molecular Formula | C8H5ClINS |
| Molecular Weight | 309.55 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.
4-Chloro-7-iodo-3-methylthieno[3,2-c]pyridine (CAS 1211581-44-0), molecular formula C8H5ClINS and molecular weight 309.55 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine/iodine substitution, 4-Chloro-7-iodo-3-methylthieno[3,2-c]pyridine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 309.55 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C8H5ClINS |
| Molecular Weight | 309.55 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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.) | 1990 |
| Halogen Content | Cl/I-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
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- tert-butyl 2-(4-oxooxan-3-yl)pyrrolidine-1-carboxylate (CAS 1461709-24-9)
- (S)-2-methoxy-2-phenylethan-1-amine (CAS 174472-00-5)
- Peptide 432 (CAS CATO-CPTD788432)
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