Piperazine impurity 51 CAS CATO-C4X-242751
| CAS No. | CATO-C4X-242751 |
| Molecular Formula | C14H14Br2N4 |
| Molecular Weight | 398.10 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Piperazine impurity 51 is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Piperazine impurity 51 (CAS CATO-C4X-242751) is a certified pharmaceutical impurity reference standard with the molecular formula C14H14Br2N4 and a molecular weight of 398.10 g/mol.
Based on its molecular formula C14H14Br2N4, Piperazine impurity 51 contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 398.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
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 | C14H14Br2N4 |
| Molecular Weight | 398.10 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | ＞95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
Related Piperazine Standards
- 2,2'-(Piperazine-1,4-dicarbonyl)dibenzoic acid (CAS 195526-67-1)
- Piperazine Impurity 65 (CAS CATO-C4X-242765)
- Piperazine, 1,4-bis[(p-chlorophenoxy)acetyl]- (CAS 4190-83-4)
- Piperazine Impurity 48 (CAS CATO-C4X-242748)
- Piperazine-1,4-diylbis((4-chlorophenyl)methanone) (CAS 107785-63-7)
- (Piperazine-1,4-diylbis(methylene))bis(phosphonicacid) (CAS 89280-71-7)
- 4,4'-(Piperazine-1,4-diyl)bis(butane-1-sulfonic acid) (CAS 16045-14-0)
- Piperazine-1,4-diylbis((4-methoxyphenyl)methanone) (CAS 116435-87-1)
Recommended Standards
- Diethyl 2,6-dibromospiro[3.3]heptane-2,6-dicarboxylate (CAS 55249-70-2)
- 1-((2,5-Dibromophenyl)sulfonyl)-4-methylpiperazine (CAS 324776-49-0)
- 4-(2,2-Dibromoethenyl)-2-methoxy-1-benzyloxybenzene (CAS 347377-09-7)
- 4,5-Dibromo-N-(2-morpholinoethyl)thiophene-2-carboxamide (CAS 903798-34-5)
- Acipimox Impurity 12 (CAS 6890-37-5)
- Epinastine Impurity 43 (CAS 41218-85-3)
- Daunorubicin Impurity 10 (CAS 76034-18-9)
- 5-Chloro-2-[(2-chloro-6-fluorobenzyl)oxy]-benzoic acid (CAS 938141-34-5)
- 1-(Pyrimidin-5-yl)-N-((tetrahydrofuran-2-yl)methyl)methanamine (CAS 1343845-24-8)
- 2-Bromo-N-isobutylacetamide (CAS 95331-76-3)
- 3-(3-Methoxyphenoxy)propylamine (CAS 6451-26-9)
- 3-((Benzo[b]thiophen-3-ylmethyl)(methyl)amino)propanoic acid hydrochloride (CAS 1582652-02-5)
- tert-Butyl 2-hydroxy-2-(6-methylpyridin-2-yl)acetate (CAS 1060803-75-9)
- Peptide Impurity 70 TFA Salt (CAS CATO-CPTD788570)
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