Amoxicillin Dimer Impurity CAS 210289-72-8
| CAS No. | 210289-72-8 |
| Molecular Formula | C32H40N6O11S2 |
| Molecular Weight | 748.82 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Amoxicillin Dimer Impurity.
Amoxicillin Dimer Impurity (CAS 210289-72-8) is a certified pharmaceutical impurity reference standard with the molecular formula C32H40N6O11S2 and a molecular weight of 748.82 g/mol.
Amoxicillin Dimer Impurity (C32H40N6O11S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone 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).
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.
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 | C32H40N6O11S2 |
| Molecular Weight | 748.82 g/mol |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2017 |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Amoxicillin Standards
- Amoxicillin EP Impurity K (CAS 2088961-38-8)
- Amoxicillin Impurity 63 (CAS CATO-C4X-114863)
- Amoxicillin Impurity 96 (CAS 2088960-43-2)
- Amoxicillin impurity 99 (CAS CATO-C4X-114899)
- Amoxicillin EP Impurity J(See C4X-11489) (CAS CATO-C4X-114810)
- Amoxicillin Dimer (CAS CATO-C4X-114856)
- Amoxicillin impurity 105 (CAS CATO-C4X-1148105)
- Amoxicillin Impurity 36 (CAS CATO-C4X-114836)
Recommended Standards
- 4',4''',4''''',4'''''''-(Ethene-1,1,2,2-tetrayl)tetrakis(([1,1'-biphenyl]-4-carbaldehyde)) (CAS 1624970-54-2)
- Methyl 2,3,4-tri-O-benzoyl-6-O-trityl-a-D-mannopyranoside (CAS 198338-59-9)
- 4',4''',4''''',4'''''''-(Ethene-1,1,2,2-tetrayl)tetrakis(([1,1'-biphenyl]-3-carbaldehyde)) (CAS 2351847-81-7)
- Methyl 2,3,4-tri-O-benzoyl-6-O-trityl-a-D-glucopyranoside (CAS 20231-39-4)
- Axitinib Impurity 76 (CAS CATO-C4X-107176)
- Dalbavancin Impurity 55 (CAS CATO-C4X-160255)
- Irbesartan Impurity 33 (CAS CATO-C4X-166633)
- (1-(4-Fluorophenyl)-1h-pyrazol-5-yl)methanamine hydrochloride (CAS 2680615-06-7)
- 1-(5-Phenylpyrimidin-2-yl)methanamine hydrochloride (CAS 1240603-02-4)
- 2-(1-(2,4-Dichlorobenzyl)-6-oxo-1,6-dihydropyridine-3-carbonyl)-N-methylhydrazine-1-carbothioamide (CAS 477853-03-5)
- 5-(4-Nitrophenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridine (CAS 338758-04-6)
- Trametinib Impurity 1 (CAS 871700-28-6)
- [1-(2-phenylethyl)-1h-pyrazol-4-yl]methanol (CAS 1341611-65-1)
- Allo-Thr5-Tirzepatide (CAS CATO-CPTD788934)
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