Rivaroxaban Impurity 91 CAS 7283-96-7
| CAS No. | 7283-96-7 |
| Molecular Formula | C5H3ClOS |
| Molecular Weight | 146.59 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.
CATO supplies Rivaroxaban Impurity 91 (CAS 7283-96-7), a pharmacopoeial impurity reference standard (molecular formula C5H3ClOS, MW 146.59 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Rivaroxaban Impurity 91 (C5H3ClOS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 146.59 g/mol, it falls into the low-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C5H3ClOS |
| Molecular Weight | 146.59 g/mol |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Rivaroxaban Standards
- Rivaroxaban Impurity 139 (CAS 85-41-6)
- Rivaroxaban Impurity 51 (CAS 1918-79-2)
- Rivaroxaban Impurity 125 (CAS 19298-14-7)
- Rivaroxaban Impurity 85 (CAS 19213-72-0)
- Rivaroxaban Impurity 45 (CAS 6310-09-4)
- Rivaroxaban impurity 194 (CAS CATO-C4X-1090194)
- Rivaroxaban Impurity 114 (CAS 22353-82-8)
- Rivaroxaban Impurity 135 (CAS 53935-71-0)
Recommended Standards
- 3-Chlorothiophene-2-Carbaldehyde (CAS 67482-48-8)
- 2-Thenoyl Chloride (CAS 5271-67-0)
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- 2(1H)-pyrimidinethione, 5-chloro- (9ci) (CAS 34772-97-9)
- Tazobactam Impurity 16 (CAS CATO-C4X-120516)
- Alogliptin Impurity 17 (CAS 865758-96-9)
- Fosfomycin Impurity 76 (CAS CATO-C4X-131676)
- 4-Chloro-6-iodoquinoline-3-carboxamide (CAS 801315-30-0)
- Ethyl 3-hydroxy-2-(trifluoromethyl)isonicotinate (CAS 1227604-06-9)
- Ethyl 1-(4-acetamido-1,2,5-oxadiazol-3-yl)-5-methyl-1H-1,2,3-triazole-4-carboxylate (CAS 312508-11-5)
- 4-Acetamido-2-hydroxy-5-methylaniline (CAS 2055118-99-3)
- [1,3-bis(4-bromophenyl)propan-2-yl](methyl)amine hydrochloride (CAS 1235438-89-7)
- Difamilast Impurity 4 (CAS 2103190-65-2)
- D-[His]1-Semaglutide X TFA salt (CAS CATO-CPTD788634)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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