Rivaroxaban Impurity 61 CAS 89166-94-9
| CAS No. | 89166-94-9 |
| Molecular Formula | C5H2Cl2O2S |
| Molecular Weight | 197.04 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| 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.
CATO supplies Rivaroxaban Impurity 61 (CAS 89166-94-9), a pharmacopoeial impurity reference standard (molecular formula C5H2Cl2O2S, MW 197.04 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, Rivaroxaban Impurity 61 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 197.04 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).
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.
Physical & Chemical Properties
| Molecular Formula | C5H2Cl2O2S |
| Molecular Weight | 197.04 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Rivaroxaban Standards
- Rivaroxaban Impurity 134 (CAS 36157-41-2)
- Rivaroxaban Impurity 22 (CAS 31166-29-7)
- Rivaroxaban Impurity 96 (CAS 1007650-38-5)
- Rivaroxaban Impurity 97 (CAS 2288308-42-7)
- Rivaroxaban Impurity 87 (CAS 96800-35-0)
- Rivaroxaban impurity 193 (CAS CATO-C4X-1090193)
- Rivaroxaban Impurity 32 (CAS 438056-69-0)
- Rivaroxaban Impurity 47 (CAS 1082588-73-5)
Recommended Standards
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- 3-bromo-6-fluoro-pyridin-2-amine (CAS 1232431-41-2)
- Tedizolid Impurity 85 (CAS 1239662-47-5)
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- oxepan-4-ylmethanol (CAS 1367939-83-0)
- trans-3-(2-Aminoethyl)cyclobutan-1-ol hydrochloride (CAS 2089291-74-5)
- N,N-Dimethyl-5-nitropyridin-2-amine hydrate (CAS 1881293-69-1)
- 2-(5-(Pyridin-3-yl)isoxazol-3-yl)ethan-1-amine (CAS 1352512-40-3)
- Tirzepatide Impurity 20 (CAS CATO-C4X-324020)
Why CATO?
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