Regadenoson Impurity N1 CAS 16321-99-6
| CAS No. | 16321-99-6 |
| Molecular Formula | C16H18ClN5O7 |
| Molecular Weight | 427.80 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 427.80 g/mol gives Regadenoson Impurity N1 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Regadenoson Impurity N1 (CAS 16321-99-6) is a certified pharmaceutical impurity reference standard with the molecular formula C16H18ClN5O7 and a molecular weight of 427.80 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Regadenoson Impurity N1 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 427.80 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Regadenoson Impurity N1 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C16H18ClN5O7 |
| Molecular Weight | 427.80 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Regadenoson Standards
- Regadenoson Impurity N2 (CAS 79999-39-6)
- Regadenoson Impurity 16 (CAS CATO-C4X-198516)
- Regadenoson Impurity 56 (CAS CATO-C4X-198556)
- Regadenoson Impurity 59 (CAS CATO-C4X-198559)
- Regadenoson Impurity 31 (CAS CATO-C4X-198531)
- Regadenoson Impurity 57 (CAS 52921-40-1)
- Regadenoson Impurity 6 (CAS 313348-16-2)
- Regadenoson Impurity 20 (CAS 313348-33-3)
Recommended Standards
- α,α,α′,α′-Tetrabromo-o-xylene (CAS 13209-15-9)
- (Z)-1-(3-morpholino-5-(trifluoromethyl)pyridin-2-yl)ethan-1-one O-(4-chlorobenzoyl) oxime (CAS 860650-97-1)
- 2-[4-(6-Chloro-4-trifluoromethyl-pyridin-2-yl)-benzylidene]-malonic acid diethyl ester (CAS 1311279-32-9)
- 3-Chloro-4,5-bis((4-chlorobenzyl)thio)pyridazine (CAS 5589-92-4)
- Solriamfetol Impurity 5 (CAS CATO-C4X-25635)
- Isoniazid EP Impurity D (CAS 553-53-7)
- Clenbuterol EP impurity D (CAS 99-92-3)
- N-((Allyloxy)carbonyl)-N-benzylglycine (CAS 1796479-31-6)
- 2-Bromo-4-(trifluoromethyl)benzoyl chloride (CAS 85663-09-8)
- N-Methyl-N-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)acetamide (CAS 1610521-16-8)
- 2-nal (CAS 2463-53-8)
- 5-methyl-1,3-dihydro-2,1-benzoxaborol-1-ol (CAS 905710-76-1)
- 2-(4-Methoxyphenyl)-2-thiomorpholinoaceticacidhydrochloride (CAS 1214094-90-2)
- Semaglutide impurity 211 (CAS CATO-C4X-2226211)
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