Vardenafil Impurity N19 CAS 2411340-39-9
| CAS No. | 2411340-39-9 |
| Molecular Formula | C21H28N6O4 |
| Molecular Weight | 460.55 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 460.55 g/mol gives Vardenafil Impurity N19 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Vardenafil Impurity N19 (CAS 2411340-39-9), a pharmacopoeial impurity reference standard (molecular formula C21H28N6O4, MW 460.55 g/mol) used for the identification and quantification of trace impurities in APIs.
Vardenafil Impurity N19 (C21H28N6O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 manufactures Vardenafil Impurity N19 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 | C21H28N6O4 |
| Molecular Weight | 460.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >90% |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2000 |
| Nitrogen Atoms | 6 |
Related Vardenafil Standards
- Vardenafil USP Related Compound E (CAS 448184-46-1)
- Vardenafil EP impurity A (CAS CATO-C4X-101722)
- Vardenafil EP Impurity A (CAS 2169247-39-4)
- Vardenafil Impurity 66 (CAS CATO-C4X-101766)
- Vardenafil Impurity 36 (CAS 224788-36-7)
- Vardenafil Impurity 31 (CAS CATO-C4X-101731)
- Vardenafil Acetyl Analogue (CAS 1261351-28-3)
- Vardenafil Acetyl-d5 Analogue (CAS 1330171-51-1)
Recommended Standards
- Lubiprostone impurity 5 (CAS CATO-C4X-11365)
- BI-135585 (CAS 1114561-85-1)
- Sildenafil Impurity 303 (CAS CATO-C4X-1128303)
- (Z)-2-(2-Tritylaminothiazol-4-yl)-2-methoxyiminoacetic Acid-d3 Methyl Ester (CAS 1331643-08-3)
- Azilsartan Ethyl Ester Impurity (CAS 1403474-70-3)
- Sitafloxacin Dechloro Impurity (CAS CATO-C4X-115524)
- Ursodeoxycholic Acid impurity 108 (CAS 1144012-08-7)
- 1,1-dioxo-2,5-dihydro-1$l^{6}-thiophene-3-carboxylic acid (CAS 267667-78-7)
- (S)-N-Allylpyrrolidine-2-carboxamide (CAS 479640-32-9)
- Afatinib Impurity 36 (CAS CATO-C4X-100636)
- Potassium 2,4,5,7-tetrabromo-9-(2-(methoxycarbonyl)phenyl)-3-oxo-3H-xanthen-6-olate (CAS 6359-04-2)
- 1-(Furan-3-yl)but-3-en-1-amine (CAS 845253-10-3)
- 1-(3,5-Dichlorobenzoyl)-3-methylpiperazine (CAS 1240574-96-2)
- Semaglutide Impurity 122 (CAS CATO-C4X-2226122)
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