Piperazine Impurity 67 CAS CATO-C4X-242767
| CAS No. | CATO-C4X-242767 |
| Molecular Formula | C11H18N2O5 |
| Molecular Weight | 258.27 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.
CATO supplies Piperazine Impurity 67 (CAS CATO-C4X-242767), a pharmacopoeial impurity reference standard (molecular formula C11H18N2O5, MW 258.27 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Piperazine Impurity 67 (C11H18N2O5) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 258.27 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Piperazine Impurity 67 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 | C11H18N2O5 |
| Molecular Weight | 258.27 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | ≥95% |
| 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Piperazine Standards
- Piperazine Impurity 66 (CAS CATO-C4X-242766)
- 5-(Piperazine-1-sulfonyl)furan-2-carboxamide (CAS 1087784-70-0)
- 4-Methyl-2-(piperazine-1-sulfonyl)phenol (CAS 1193387-51-7)
- 2-(4-methyl-piperaZine-1-sulfonyl)-phenylamine (CAS 436095-29-3)
- 4-(4-Methyl-piperazine-1-sulfonyl)-phenylamine (CAS 21623-68-7)
- Piperazine Impurity 6 (CAS 62755-64-0)
- 1,1'-(Piperazine-1,4-diyl)bis(butane-1,3-dione) (CAS 92538-64-2)
- 2-(4-Ethyl-piperazine-1-carbonyl)-benzoic acid (CAS 412921-53-0)
Recommended Standards
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- Tacrolimus Impurity 37 (CAS CATO-C4X-130037)
- 3,4-Dihydrospiro[chromene-2,4'-piperidine] hydrochloride (CAS 400729-14-8)
- 2-Fluoro-N,6-dihydroxybenzamide (CAS 855996-64-4)
- N1,N1-diethylbenzene-1,4-disulfonamide (CAS 91717-07-6)
- 5-(3-(Hydroxymethyl)phenyl)pyridin-2-ol (CAS 1111102-81-8)
- Neratinib Impurity 60 (CAS CATO-C4X-113460)
- Hyoscyamine Impurity 18 (CAS CATO-C4X-343718)
- Semaglutide impurity 289 (CAS CATO-C4X-2226289)
Why CATO?
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