Risedronate EP Impurity D CAS 6419-36-9
| CAS No. | 6419-36-9 |
| Molecular Formula | C7H7NO2 |
| Molecular Weight | N/A |
| 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.
Risedronate EP Impurity D (CAS 6419-36-9) is a certified pharmaceutical impurity reference standard with the molecular formula C7H7NO2HCl and a molecular weight of 173.60 g/mol.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, Risedronate EP Impurity D is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 173.60 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO manufactures Risedronate EP Impurity D 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.
Physical & Chemical Properties
| Molecular Formula | C7H7NO2 HCl |
| Molecular Weight | 173.60 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Risedronate Standards
- Risedronate EP Impurity B (CAS 105462-23-5)
- Risedronate EP Impurity B Sodium Salt (CAS 105462-23-5（free base）)
- Risedronate EP Impurity C (CAS 105462-25-7)
- Risedronate Sodium (CAS 115436-72-1)
- Risedronate Related Compound A (CAS 1220806-40-5)
- Risedronate EP Impurity A Disodium Salt (CAS 1486466-30-1(free acid))
- Risedronate EP Impurity A (CAS 1486617-90-6)
- Risedronate Impurity 10 (CAS 1630901-84-6)
Recommended Standards
- Atosiban Impurity 54 (CAS 1227206-06-5)
- Venetoclax Impurity 142 (CAS CATO-C4X-2495142)
- Metformin Impurity 26 (CAS 32161-06-1)
- N-Nitroso-Fosdenopterin-2 (CAS CATO-C3D-262128)
- (S)-3-(Boc-amino)-3-phenylpropanal (CAS 135865-78-0)
- N-(4-Ethylphenyl)-5-iodopyrimidin-4-amine (CAS 500228-16-0)
- N-(5-Propylisoxazol-3-yl)morpholine-4-carboxamide (CAS 55808-63-4)
- 1-methanesulfonyl-1,2-dihydrospiro[indole-3,4'-piperidine] hydrochloride (CAS 159634-86-3)
- 4,4-Difluoro-2-methylpyrrolidine hydrochloride (CAS 1781074-90-5)
- Acetyl decapeptide-3 (CAS 935288-50-9)
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