Risedronate EP Impurity B CAS 105462-23-5
| CAS No. | 105462-23-5 |
| Molecular Formula | C7H11NO7P2 |
| Molecular Weight | 283.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Risedronate EP Impurity B under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Risedronate EP Impurity B (CAS 105462-23-5) is a certified pharmaceutical impurity reference standard with the molecular formula C7H11NO7P2 and a molecular weight of 283.11 g/mol.
The molecular framework of Risedronate EP Impurity B (C7H11NO7P2) is characterized by a carbohydrate-derived structure, an amide group, a phosphate ester group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C7H11NO7P2 |
| Molecular Weight | 283.11 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Risedronate Standards
- Risedronate EP Impurity C (CAS 105462-25-7)
- Risedronate Impurity 10 (CAS 1630901-84-6)
- Risedronate 2.5-Hydrate EP Impurity E (CAS 75755-10-1)
- Risedronate impurity 11 (CAS CATO-C4X-175011)
- Risedronate EP Impurity A (CAS 1486617-90-6)
- Risedronate Sodium (CAS 115436-72-1)
- Risedronate Related Compound A (CAS 1220806-40-5)
- Risedronate Sodium Hemipentahydrate (CAS 329003-65-8)
Recommended Standards
- Ethyl 4-(4-bromophenyl)-2-oxobut-3-enoate (CAS 1000400-78-1)
- Flunarizine Impurity 16 (CAS 345-90-4)
- 4-(3-Bromoimidazo[1,2-b]pyridazin-6-yl)morpholine (CAS 1012343-72-4)
- 593255-20-0 2-Iodo-1,5-dimethyl-3-nitrobenzene DTXSID20556039 (CAS 593255-20-0)
- Dronedarone Impurity 23 (CAS CATO-C4X-109223)
- Argatroban Impurity 80 (CAS 1260981-49-4)
- Cetirizine Impurity 15 (CAS CATO-C4X-158215)
- 2,3-Dimethoxy-5-((trimethylsilyl)ethynyl)pyridine (CAS 1171919-88-2)
- 3-Chloro-4-((2-chloro-4-fluorobenzyl)oxy)benzoic acid (CAS 1455261-71-8)
- (1R,2S)-Methyl 2-aminocyclopentanecarboxylate hydrochloride (CAS 380227-38-3)
- N-(3-(5,7-Dimethylbenzo[d]oxazol-2-yl)-2-methylphenyl)-4-methoxybenzamide (CAS 590395-81-6)
- Pitolisant Impurity 46 (CAS CATO-C4X-252046)
- n-(1-Cyclopropylethyl)-4-propylaniline (CAS 1036520-46-3)
- D-Ala18-Tirzepatide (CAS CATO-CPTD788916)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com