Regadenoson Impurity 13 CAS 72635-67-7
| CAS No. | 72635-67-7 |
| Molecular Formula | C10H12ClN5O4 |
| Molecular Weight | 301.69 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.
CATO supplies Regadenoson Impurity 13 (CAS 72635-67-7), a pharmacopoeial impurity reference standard (molecular formula C10H12ClN5O4, MW 301.69 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Regadenoson Impurity 13 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 301.69 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).
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 | C10H12ClN5O4 |
| Molecular Weight | 301.69 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 sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Regadenoson Standards
- Regadenoson Impurity 48 (CAS 10147-12-3)
- Regadenoson Impurity 15 (CAS 2015222-35-0)
- Regadenoson Impurity 21 (CAS 146-77-0)
- Regadenoson Impurity 22 (CAS 2004-07-1)
- Regadenoson Impurity 49 (CAS 120595-74-6)
- Regadenoson Impurity 11 (CAS 24723-77-1)
- Regadenoson Impurity 19 (CAS CATO-C4X-198519)
- Regadenoson Impurity 28 (CAS 3868-34-6)
Recommended Standards
- N2-methyl-N2-(3-pyridylmethyl)-3-chloro-5-(trifluoromethyl)pyridin-2-amine (CAS 244006-18-6)
- N1-{[5-chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methylidene}-4-methylaniline (CAS 648859-63-6)
- 8-Chloroadenosine (CAS 34408-14-5)
- 8-Chloro-2'-deoxyguanosine (CAS 437715-62-3)
- Imidapril Impurity 11 (CAS CATO-C4X-243911)
- Estriol EP Impurity B (Estrone) (CAS 53-16-7)
- Moxifloxacin Impurity N44 (CAS 116751-24-7)
- Ethyl 2-bromo-2-(4-methoxyphenyl)acetate (CAS 77053-56-6)
- [3-(dimethylamino)propyl](diphenylmethyl)amine (CAS 807277-01-6)
- N-(3-Bromophenethyl)-2,2,2-trifluoroacetamide (CAS 215797-81-2)
- (E)-4-((4-(N-methyl-N-phenylsulfamoyl)phenyl)amino)-4-oxobut-2-enoic acid (CAS 791793-63-0)
- 2-Ethoxy-4-formylphenyl 2-chloroacetate (CAS 247225-91-8)
- 6-Amino-3-(cyclopropylmethyl)-2,3-dihydro-1,3-benzoxazol-2-one (CAS 1457420-33-5)
- [D-Ser8]-Semaglutide A (CAS CATO-C4X-2226116)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com