Telmisartan Impurity 2 CAS 1113-26-4
| CAS No. | 1113-26-4 |
| Molecular Formula | C2H4S3 |
| Molecular Weight | 124.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a process- or degradation-related impurity, Telmisartan Impurity 2 (CAS 1113-26-4, C2H4S3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Telmisartan Impurity 2 (C2H4S3) is characterized by sulfur-containing functionality. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development.
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.
Physical & Chemical Properties
| Molecular Formula | C2H4S3 |
| Molecular Weight | 124.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 3 |
Related Telmisartan Standards
- Telmisartan Impurity 48 (CAS 623-09-6)
- Telmisartan Impurity 10 (CAS 73902-64-4)
- Telmisartan Impurity N4 (CAS 89323-10-4)
- Telmisartan Impurity 51 (CAS 99-36-5)
- Telmisartan Impurity 85 (CAS CATO-C4X-135985)
- Telmisartan Impurity 50 (CAS 612-28-2)
- Telmisartan Impurity N1 (CAS 69825-83-8)
- Telmisartan Impurity 23 (CAS 84859-27-8)
Recommended Standards
- 2,3-Dimercapto-1-propanol (CAS 59-52-9)
- 1,4-Diazabicyclo[2.2.2]octane-d12 (CAS 119451-78-4)
- Methyl((methylsulfinyl)methyl)sulfane (CAS 33577-16-1)
- Trivinylmethylsilane (CAS 18244-95-6)
- Relebactam Impurity 99 (CAS 1174019-22-7)
- Nicardipine Impurity 34 (CAS CATO-C4X-171034)
- Landiolol Impurity 118 (CAS CATO-C4X-2621118)
- 3-Methoxypicolinamide (CAS 24059-85-6)
- ∆1-Androstene-3α,17β-diol 17-Acetate (1.0mg/ml in Acetonitrile) (CAS 14291-94-2)
- Cyclobutyl(3-methylpyridin-4-yl)methanone (CAS 1603006-99-0)
- {[(1S,2S)-2-Amino-1,2-diphenylethyl](4-toluenesulfonyl)amido}(p-cymene)(pyridine)ruthenium(II) tetrafluoroborate (CAS 1192483-28-5)
- rel-Ethyl (1R,2R)-2-(3-bromophenyl)cyclopropane-1-carboxylate (CAS 114095-58-8)
- 1-(2-Fluoro-4-methylphenyl)-5-(pyridin-2-yl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1340937-22-5)
- D-Phe22-Tirzepatide (CAS CATO-CPTD788912)
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