Risedronate EP Impurity A CAS 1486617-90-6
| CAS No. | 1486617-90-6 |
| Molecular Formula | C14H18N2O12P4 |
| Molecular Weight | 530.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Risedronate EP Impurity A (C14H18N2O12P4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a phosphate ester group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 530.19 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Risedronate EP Impurity A (CAS 1486617-90-6) is a certified pharmaceutical impurity reference standard with the molecular formula C14H18N2O12P4 and a molecular weight of 530.19 g/mol.
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.
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 | C14H18N2O12P4 |
| Molecular Weight | 530.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 2 |
Related Risedronate Standards
- Risedronate impurity 11 (CAS CATO-C4X-175011)
- Risedronate Impurity 10 (CAS 1630901-84-6)
- Risedronate EP Impurity C (CAS 105462-25-7)
- Risedronate EP Impurity B (CAS 105462-23-5)
- Risedronate 2.5-Hydrate EP Impurity E (CAS 75755-10-1)
- Risedronate Sodium (CAS 115436-72-1)
- Risedronate Related Compound A (CAS 1220806-40-5)
- Risedronate Sodium Hemipentahydrate (CAS 329003-65-8)
Recommended Standards
- Macitentan Impurity 55 (CAS CATO-C4X-117555)
- 7-[2-C-Ethynyl-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine (CAS 1291103-01-9)
- 4-Chloro Maraviroc (CAS 1391048-05-7)
- 3(5)-(Perfluoro-n-hexyl)-5(3)-trifluoromethyl-1-(phenyl)pyrazole (CAS 959573-93-4)
- Ademetionine Impurity 5 (CAS CATO-C4X-21525)
- Primaquine EP Impurity D (CAS 83532-78-9)
- Ruxolitinib Impurity 99 (CAS CATO-C4X-205899)
- 1-[(1-Phenyl-1H-1,2,3-triazol-5-yl)-methyl]piperazine dihydrochloride (CAS 1338667-74-5)
- 4-(9-Carbazolyl)phenylboronic Acid Pinacol Ester (CAS 785051-54-9)
- (1-(Furan-3-yl)-3-methyl-1H-pyrazol-4-yl)boronic acid (CAS 2225178-86-7)
- 1,6-Dibromohexane (CAS 629-03-8)
- 5-Cyano-2-hydroxyphenylboronic Acid (CAS 1256355-57-3)
- 2-(((Benzyloxy)carbonyl)amino)-4-(methylsulfinyl)butanoic acid (CAS 3054-53-3)
- Fas C- Terminal Tripeptide (CAS 189109-90-8)
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