Acetylcysteine Impurity 26 CAS CATO-C4X-153226
| CAS No. | CATO-C4X-153226 |
| Molecular Formula | C12H20N2O7S3 |
| Molecular Weight | 400.49 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.
Acetylcysteine Impurity 26 (CAS CATO-C4X-153226) is a certified pharmaceutical impurity reference standard with the molecular formula C12H20N2O7S3 and a molecular weight of 400.49 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Acetylcysteine Impurity 26 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 400.49 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).
As a certified reference material (CRM), Acetylcysteine Impurity 26 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 | C12H20N2O7S3 |
| Molecular Weight | 400.49 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 3 |
Related Acetylcysteine Standards
- Acetylcysteine Impurity 27 (CAS CATO-C4X-153227)
- Acetylcysteine Impurity 76 (CAS CATO-C4X-153276)
- Acetylcysteine Impurity 75 (CAS CATO-C4X-153275)
- Acetylcysteine impurity 71 (CAS CATO-C4X-153271)
- Acetylcysteine impurity 61 (CAS CATO-C4X-153261)
- Acetylcysteine EP Impurity C (CAS 5545-17-5)
- Acetylcysteine impurity 64 (CAS CATO-C4X-153264)
- Acetylcysteine impurity 74 (CAS CATO-C4X-153274)
Recommended Standards
- Ticagrelor Impurity 109 (CAS CATO-C4X-1093109)
- Tos-Lys(Boc)-OH (CAS 16948-09-7)
- Amisulpride impurity 55 (CAS CATO-C4X-104555)
- Tetraphenyl Orthosilicate (CAS 1174-72-7)
- Landiolol Impurity 46 (CAS 57044-24-3)
- Isavuconazole impurity 72 (CAS CATO-C4X-1236172)
- Isoflurane EP Impurity D (CAS 32778-07-7)
- 1-[(1-ethyl-3-methyl-1H-pyrazol-4-yl)sulfonyl]piperidin-4-amine (CAS 1018996-09-2)
- (7-Chloronaphthalen-2-yl)methanol (CAS 1261486-08-1)
- N-(4-Acetylphenyl)-3-oxobutanamide (CAS 83999-28-4)
- Ethyl 7-cyclohexyl-4-hydroxyquinoline-3-carboxylate (CAS 55376-47-1)
- Pazufloxacin Impurity 9 (CAS 171567-48-9)
- 2-(Dimethylamino)ethyl 2-methylfuran-3-carboxylate (CAS 462076-89-7)
- Semaglutide impurity 54 (CAS CATO-C4X-222654)
Why CATO?
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