Avanafil Impurity 56 CAS 2310299-29-5
| CAS No. | 2310299-29-5 |
| Molecular Formula | C14H14ClN3O5S |
| Molecular Weight | 371.80 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Avanafil Impurity 56 (CAS 2310299-29-5) is a certified pharmaceutical impurity reference standard with the molecular formula C14H14ClN3O5S and a molecular weight of 371.80 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, Avanafil Impurity 56 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 371.80 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C14H14ClN3O5S |
| Molecular Weight | 371.80 g/mol |
| Purity | 97%+ |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Avanafil Standards
- Avanafil Impurity 112 (CAS CATO-C4X-1118112)
- Avanafil Impurity 33 (CAS CATO-C4X-111833)
- Avanafil Impurity 43 (CAS 330785-81-4)
- Avanafil Impurity 52 (CAS CATO-C4X-111852)
- Avanafil Impurity 79 (CAS 330785-82-5)
- Avanafil Impurity 20 (CAS 2250242-42-1)
- Avanafil Impurity 68 (CAS 2250243-09-3)
- Avanafil Impurity 90 (CAS 2250242-49-8)
Recommended Standards
- N-(4-chlorophenyl)-2-hydroxy-4-oxo-4H-benzo[4,5]thiazolo[3,2-a]pyrimidine-3-carboxamide (CAS 224313-84-2)
- 3-(4-Chlorophenyl)-9-(3-hydroxypropyl)-9,10-dihydro-4H,8H-chromeno[8,7-e][1,3]oxazin-4-one (CAS 1010933-62-6)
- N-(4-Chlorophenyl)-2-[(3,4,4-trifluorobut-3-en-1-yl)sulfanyl]benzamide (CAS 339020-03-0)
- (2S,4S)-1-(tert-Butoxycarbonyl)-4-(2-chloro-4-methoxyphenoxy)-2-pyrrolidinecarboxylic acid (CAS 1354486-68-2)
- Amoxicillin EP impurity D2-2 (CAS 107437-40-1)
- Sunitinib Impurity 48 (CAS 71294-03-6)
- Deoxycholic acid Impurity 42 (CAS CATO-C4X-335942)
- 405-18-5 Ethenesulfonyl fluoride, 2-phenyl- NSC-85554 NSC85554 (CAS 405-18-5)
- [1,1':4',1''-Terphenyl]-3-ylboronic acid (CAS 881911-81-5)
- 6,7-Dihydro-5H-pyrazolo[5,1-b][1,3]oxazine-2-carboxylic acid (CAS 718621-99-9)
- (4R,6R)-6-(2-Aminoethyl)-4-hydroxytetrahydro-2H-pyran-2-one (CAS 676260-70-1)
- Methyl 6-Amino-2-chloronicotinate (CAS 1004294-64-7)
- Dyclonine Impurity 28 (CAS 23079-65-4)
- Semaglutide impurity 249 (CAS CATO-C4X-2226249)
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