N-Nitroso Felodipine EP Impurity B CAS CATO-C4X-109420
| CAS No. | CATO-C4X-109420 |
| Molecular Formula | C17H16Cl2N2O5 |
| Molecular Weight | 399.23 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.
N-Nitroso Felodipine EP Impurity B (CAS CATO-C4X-109420) is a certified pharmaceutical impurity reference standard with the molecular formula C17H16Cl2N2O5 and a molecular weight of 399.23 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, N-Nitroso Felodipine EP Impurity B is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 399.23 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.
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 | C17H16Cl2N2O5 |
| Molecular Weight | 399.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related N Standards
- N-Nitroso Felodipine Impurity 24 (CAS CATO-C4X-109424)
- N-Nitroso Valganciclovir (CAS CATO-C4X-177421)
- N-nitroso Peramivir Impurity 98 (CAS CATO-C4X-183398)
- Nitroso Perindopril EP impurity N (CAS CATO-C4X-125251)
- N-Nitroso Lansoprazole (CAS CATO-C4X-111359)
- N-Nitroso Dexlansoprazole (CAS CATO-C4X-111362)
- N-Nitroso Isradipine (CAS CATO-C4X-27541)
- N-Nitroso Cinacalcet Impurity 6 (CAS CATO-C4X-105977)
Recommended Standards
- Etnipromid (CAS 76120-22-4)
- 7-Chloro-N-(4-chlorophenyl)-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxamide (CAS 338778-79-3)
- 2-Phenoxyethyl 2-[1-(2-bromoacetyl)-3-oxo-2-piperazinyl]acetate (CAS 1219272-05-5)
- 3-Cyano-6-(4-methoxyphenyl)pyridin-2-yl 2,6-dichlorobenzoate (CAS 303152-18-3)
- Nafamostat impurity 85 (CAS CATO-C4X-133285)
- Ferulic Acid Impurity 4 (CAS 135820-01-8)
- Azelastine Impurity 47 (CAS CATO-C4X-139647)
- 3-(((2-Fluoroethyl)sulfonyl)methyl)azetidine (CAS 1517470-04-0)
- 2-Amino-6-bromoquinoline hydrochloride (CAS 1170935-81-5)
- 4-Cyclopropylpentan-2-amine (CAS 859447-00-0)
- 2-(2,3-Dimethoxyphenyl)acetonitrile (CAS 4468-57-9)
- 1-Cyclopropyl-3,3,3-trifluoropropan-1-amine hydrochloride (CAS 1788615-23-5)
- 3-Thiophenecarboxylicacid, 2-amino-4-[1,1'-biphenyl]-4-yl-, ethyl ester 307343-50-6 CTK4G5782 (CAS 307343-50-6)
- Anti-TF Antigen Peptide P30-1 trifluoroacetate salt (CAS 573664-50-3)
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